Rain by City — How Wet Weather Varies Across Japan
Not all Japanese cities are equally wet. Fukuoka gets 50% more rain than Sapporo. Tokyo's September is a different beast than Kyoto's July. Here's how rainfall breaks down in six major destinations.
Japan isn't one uniform weather zone. The country stretches over 2,000 kilometers from north to south, and the rainfall patterns shift dramatically depending on which city you're standing in. A traveler who only visits Tokyo and Kyoto might conclude Japan is moderately wet. Someone who adds Fukuoka to their itinerary will come away with a very different — and much damper — impression.
We've selected six cities that represent the range of what you'll encounter as a visitor. Tokyo and Kyoto are the obvious ones — most first-time travelers hit both. Osaka is the food-obsessed counterweight to Kyoto's temples. Sapporo gives you the northern perspective. Fukuoka represents the steamy, super-wet south. And Sendai shows you what happens when a city sits on the Pacific coast directly in the path of incoming storms.
Each city profile below includes the yearly average rainfall, the wettest and driest months, and what that actually means for your trip. We use millimeters because that's how rainfall is measured in Japan — if you're used to inches, 1,000mm is roughly 39 inches. So when we say Fukuoka gets 1,672mm, that's about 66 inches of rain per year. That's a lot of water.
Tokyo
Tokyo surprises a lot of visitors with how much rain it gets. At roughly 1,530mm per year, it's significantly wetter than London (about 600mm) and even rain-famous Seattle (about 950mm). The difference is that Tokyo's rain comes in concentrated bursts rather than the steady drizzle you get in the Pacific Northwest. A Tokyo thunderstorm in August doesn't mess around — it'll dump 50mm in an hour, flood underpasses, and send salarymen sprinting for station entrances.
The city's geography makes these sudden storms worse. Tokyo sits on the Kanto Plain, surrounded by mountains that trap warm, moist air. When that humid air rises and cools, it creates powerful afternoon thunderstorms, particularly in July and August. You'll often see clear mornings turn into ominous dark skies by 2 PM, followed by a torrential downpour that lasts 30-60 minutes before clearing as if nothing happened.
September is Tokyo's single wettest month at around 210mm, and this is almost entirely due to typhoons and tropical systems tracking up the Pacific coast. A single typhoon can account for a third of the month's total rainfall. If you're visiting in September, keep emergency indoor activities bookmarked — the Edo-Tokyo Museum, TeamLab Planets, or the basement food halls at Mitsukoshi in Ginza can absorb hours of storm time.
December is Tokyo's driest month at roughly 39mm, which sounds great until you factor in the cold. January and February are similarly dry but chilly. The sweet spot for Tokyo weather is late April through early May, and again in October and November — comfortable temperatures, manageable rainfall, and plenty of clear days for skyline views from places like Shibuya Sky or Tokyo Skytree.
One practical Tokyo tip: the city's covered infrastructure is decent but not amazing compared to Osaka. Shinjuku Station's underground passages can get you surprisingly far without an umbrella, and neighborhoods like Ginza and Marunouchi have extensive covered walkways. But if you're exploring Shibuya, Harajuku, or Shimokitazawa, you're largely exposed. Carry an umbrella from October through September. Yes, that means basically always.
Osaka
Osaka averages about 1,270mm of rain per year — lower than Tokyo, but don't let that number fool you. Osaka's rain is concentrated differently, and the city's legendary humidity makes every rainy day feel substantially worse. When we say Osaka is humid, we mean "walk outside and your glasses fog up" humid. "Take a shower and never fully dry off" humid. It's genuinely one of the most humidity-challenged cities we've visited.
June is Osaka's wettest month at roughly 226mm, driven almost entirely by the tsuyu rainy season. Unlike Tokyo, where rain is spread more evenly across summer months, Osaka gets absolutely clobbered during tsuyu. The city's position on Osaka Bay means it catches moist air from the Seto Inland Sea, and when that meets the seasonal rain front, it just keeps coming. Day after day of gray skies and steady precipitation.
But here's where Osaka has a massive advantage over Tokyo: covered shopping arcades. The city is famous for them — Tenjinbashisuji, Shinsaibashisuji, Ebisubashi-suji — kilometers of fully covered pedestrian streets where you can shop, eat, and explore without ever seeing the sky. Yuki, our co-founder who grew up here, claims she can get from her parents' apartment in Namba to Umeda without an umbrella using only covered routes. We're not sure that's literally true, but it's not far off.
Osaka's December rainfall drops to about 38mm — barely anything. Winter in Osaka is mild compared to Tokyo and significantly warmer than Sapporo. Daytime temperatures in December hover around 9-12°C (48-54°F), which feels downright pleasant after the sweltering summer. If you want to experience Osaka's incredible food scene without sweating through your clothes, December through February is genuinely pleasant.
The bottom line on Osaka: lower annual rainfall than Tokyo, but the humidity makes wet days feel worse. The covered arcades are a game-changer. Visit in autumn or winter for the best experience, and avoid June unless you really enjoy the sound of rain on rooftops (you'll hear a lot of it).
Kyoto
Kyoto is the driest of Japan's major tourist cities at roughly 1,150mm per year. That's still more than most European cities, but by Japanese standards it's on the lower end. The reason? Geography. Kyoto sits in the Kansai basin, surrounded by mountains on three sides. This basin geography actually traps moisture in a way that creates localized weather patterns — morning fog in the river valley, afternoon buildup against the eastern mountains, and some genuinely spectacular thunderstorms that roll in from the west.
July is Kyoto's wettest month at about 221mm, with the tail end of tsuyu giving way to tropical downpours. The transition period in mid-July can be particularly dramatic — one day of steady drizzle, then a massive thunderstorm that turns the Kamo River brown with runoff. If you're visiting temples during this period, those stone pathways get incredibly slippery. Rachel learned this the hard way with a bruised tailbone at Kiyomizudera. Walk slowly, wear shoes with grip.
December is Kyoto's driest month at roughly 35mm, and it's one of the best times to visit if you can handle the cold. The crowds thin out dramatically after New Year, and the city's thousands of temples take on a peaceful, contemplative quality in winter light. Early morning visits to Fushimi Inari Shrine in December mean you'll have the torii gate paths almost to yourself. Just bring a proper winter coat — Kyoto gets colder than Osaka due to its inland position, and temperatures regularly drop below freezing at night.
Something unique about Kyoto: rain actually enhances many of the city's top attractions. The moss gardens at Saihoji and Ginkakuji look their most vibrant after a light rain. The bamboo grove at Arashiyama creates an otherworldly atmosphere in misty conditions. Even crowded temples like Kinkakuji are more photogenic under overcast skies — no harsh shadows, no glare off the gold leaf. We've started intentionally scheduling temple visits for overcast days.
One practical note: Kyoto's public transportation is less umbrella-friendly than Osaka or Tokyo. The bus system — which most tourists rely on — involves standing at exposed bus stops and walking from the stop to your destination. The subway exists but doesn't cover most tourist areas. You'll use your umbrella more in Kyoto than you would in Osaka with its covered arcades. Pack a good one.
Sapporo
Sapporo is Japan's driest major city at approximately 1,106mm per year, and it's the single best argument for heading north during the country's wet seasons. While Tokyo and Osaka are drowning in tsuyu rain, Sapporo is enjoying clear skies and pleasant temperatures. While Fukuoka is getting battered by summer typhoons, Sapporo might get a windy day and some rain. It's the weather refuge that too many visitors ignore.
The trade-off, of course, is winter. Sapporo's driest month is February at roughly 37mm, but that precipitation falls almost entirely as snow — and there's a lot of it. The city averages about 6 meters of snow annually, making it one of the snowiest major cities on Earth. The Sapporo Snow Festival in early February is spectacular, but you'll need serious winter gear, not a rain jacket.
August is technically Sapporo's wettest month at about 142mm, but even that is mild compared to what the southern cities experience. Summer in Hokkaido is genuinely delightful — temperatures rarely exceed 26°C (79°F), humidity stays comfortable, and the long daylight hours let you pack in maximum sightseeing. The lavender fields at Furano, the flower gardens at Biei, and the fresh seafood markets are all at their peak.
One of Sapporo's biggest weather advantages is how it handles tsuyu. The seasonal rain front that drenches Honshu in June and July rarely reaches Hokkaido with the same intensity. June rainfall in Sapporo is about 80mm — compare that to Osaka's 226mm or Tokyo's 168mm. That's not a minor difference. That's the difference between needing an umbrella every day versus needing it once a week.
Our recommendation: if you're flexible with timing and want to minimize rain risk, plan a Hokkaido trip for June or July while the rest of Japan is underwater. You'll miss the famous Kyoto temples and Tokyo neighborhoods, but you'll gain an entirely different side of Japan — rural, spacious, and refreshingly dry. Rachel's favorite Japan trip ever was a July hiking loop through Daisetsuzan National Park under cloudless skies while her Instagram feed filled with friends posting umbrella selfies from Tokyo.
Fukuoka
Fukuoka is the wettest major city in Japan at roughly 1,672mm per year, and July is an absolute monster with about 299mm of rain. To put that in perspective, London gets about 600mm in an entire year. Fukuoka gets half that in a single month. If you're not prepared for rain in Fukuoka, you're going to have a bad time. Full stop.
Why is Fukuoka so wet? Location, location, location. The city sits on the northern coast of Kyushu, directly in the path of moist air coming off the warm Tsushima Strait. When the seasonal rain front (baiu front) stalls over Kyushu in June and July, it just keeps feeding moisture into the region. Add tropical systems tracking up from the south in August and September, and you've got a recipe for consistently heavy rainfall.
But here's what makes Fukuoka interesting: the locals don't care. They eat ramen at open-air yatai stalls in light rain. They hold outdoor festivals with ponchos. The city's food culture — particularly the famous tonkotsu ramen and the fresh seafood from Hakata Bay — is so compelling that a little (or a lot of) water doesn't deter anyone. Yuki says Fukuoka people are waterproof. She's only half joking.
December is Fukuoka's driest month at about 57mm, and winter in Kyushu is genuinely pleasant — daytime temperatures around 9-13°C (48-55°F), minimal rain, and clear skies. It's a fantastic time to explore the region without the summer deluge. The nearby onsen town of Beppu, the historic streets of Nagasaki, and the volcanic landscapes of Aso Caldera are all accessible and enjoyable in winter conditions.
Should you visit Fukuoka in summer? We'd advise against it unless you have a specific reason. The combination of extreme rainfall, high humidity, and intense heat creates genuinely uncomfortable conditions. But in autumn, winter, or spring? Fukuoka is one of our favorite Japanese cities — incredible food, friendly locals, lower prices than Tokyo, and a relaxed atmosphere that feels completely different from the capital. Just check the forecast and pack accordingly.
Sendai
Sendai doesn't show up on most first-time Japan itineraries, which is a shame because it offers a completely different perspective on the country. At roughly 1,252mm of annual rainfall, it sits in the middle of the pack — wetter than Kyoto and Sapporo, drier than Tokyo and Fukuoka. But Sendai's rain has a distinct personality that sets it apart from the other cities on this list.
September is Sendai's wettest month at about 202mm, driven almost entirely by typhoons and tropical systems making landfall on the Pacific coast and tracking north. Sendai sits directly in the path of these systems as they move up from the south. The 2011 Tohoku earthquake and tsunami put this region on the map for tragic reasons, but Sendai has rebuilt impressively and is now a modern, accessible city with a distinct regional character.
What makes Sendai's rain different is the wind. Being on the Pacific coast means Sendai catches coastal storms with full force. A rainy day in Sendai often comes with gusty conditions that render cheap convenience store umbrellas useless within minutes. If you're visiting during typhoon season, you need a serious umbrella or better yet, a rain jacket with a hood that won't flip inside out.
February is Sendai's driest month at roughly 38mm, mostly falling as snow. Winter in Tohoku is proper winter — cold, snowy, and beautiful. The nearby Zao Onsen ski resort is famous for its "snow monsters" — trees completely encased in ice and snow that create an otherworldly landscape. Sendai itself is manageable in winter with the right clothing, and the city's famous beef tongue restaurants (gyutan-yaki) taste even better when it's cold outside.
Sendai's covered infrastructure is decent but not extensive. The station area has good underground connections, and the covered shopping streets near Clisone and the station work well for light rain. But if you're heading to Matsushima Bay — one of Japan's most scenic spots and a must-see near Sendai — you're fully exposed. Matsushima in a storm is still beautiful, just wet. The bay's famous pine-covered islands look dramatic under dark skies.
We'd recommend Sendai for travelers who've already done Tokyo-Kyoto-Osaka and want something different. The Tanabata Festival in August is one of Japan's most spectacular summer events, with massive paper decorations hanging throughout the city. Just bring a rain jacket — August rainfall averages around 150mm and those decorations don't hold up well in a downpour.
Understanding the Regional Differences
Before you dive into individual city profiles, it's worth understanding the bigger picture of how Japan's geography drives its rainfall patterns. The country is essentially a chain of mountains running down the middle of islands, with populated areas mostly along the coasts. This creates distinct weather patterns on the Pacific Ocean side versus the Sea of Japan side.
The Pacific side — where Tokyo, Osaka, Kyoto, and Sendai all sit — gets its heaviest rain in summer and early autumn. This is when moist Pacific air flows in, hits the mountains, and dumps precipitation. Typhoons track up the Pacific coast, which is why September is devastating for Tokyo and Sendai. The summer thunderstorms that plague Osaka and Kyoto form when hot, humid air rises off the warm land and condenses into massive storm cells.
The Sea of Japan side — cities like Kanazawa and Niigata, which we haven't covered in detail — has a completely different pattern. These cities get hammered in winter when cold air from Siberia picks up moisture crossing the Sea of Japan and dumps it as heavy snow on the western slopes. Niigata gets over 2,000mm of precipitation annually, much of it as snow. If you're wondering why we didn't include these cities, it's because they're less commonly visited by international tourists, but the pattern is worth knowing about.
Kyushu and Okinawa operate on yet another system. Down south, you're dealing with subtropical moisture, tropical systems, and the warm Kuroshio Current that feeds humidity into the atmosphere year-round. Fukuoka's extreme rainfall isn't an anomaly — it's what happens when you combine subtropical moisture with seasonal rain fronts and typhoons. Okinawa is even wetter, with some areas getting 2,000mm+ annually, but most travelers visit for beach weather in winter when the rest of Japan is freezing.
Hokkaido is the outlier. Being far north and separated from the main island by the Tsugaru Strait, it avoids much of the moisture that drenches Honshu. The Sea of Japan side of Hokkaido does get significant snow in winter, but Sapporo itself is remarkably dry compared to cities at similar latitudes elsewhere in the world. It's the weather refuge that makes Hokkaido summer travel so appealing.
Practical Rain Strategies by City Type
We've noticed that rain management strategies differ significantly depending on what kind of city you're visiting:
Ultra-urban (Tokyo, Osaka): In these massive cities, your best rain strategy is infrastructure. Underground passages, covered arcades, and indoor shopping complexes let you cover enormous distances without an umbrella. The challenge is getting between these covered areas. Pack a compact umbrella for the gaps, and plan routes that minimize outdoor exposure.
Temple cities (Kyoto, Nara): Here you're mostly outdoors on stone pathways, gardens, and hillside trails. Covered infrastructure is limited. Your rain strategy needs to focus on personal gear — good umbrella, grippy shoes, waterproof bag. Rain ponchos work better than umbrellas when you're climbing temple stairs because you need both hands free for the railings.
Coastal cities (Sendai, Fukuoka): Wind is the added challenge. Coastal rain often comes with gusty conditions that make umbrellas ineffective. A rain jacket with a hood becomes more important here. Also, coastal cities tend to have more dramatic weather swings — a clear morning can turn into a stormy afternoon very quickly.
Northern cities (Sapporo): Rain isn't the main concern — snow is. But Hokkaido's summer rain is typically gentle and brief. A light jacket with a hood is usually sufficient. The bigger issue is temperature drops after rain, which can be significant even in summer. Pack layers.
Comparing Rainfall Patterns Side by Side
Here's a practical way to think about the differences. In Tokyo, a typical rainy day in September means 10-15mm of steady rain over 6-8 hours. In Fukuoka, a typical July rainy day means 20-30mm in intense bursts over 3-4 hours. In Sapporo, a typical August rainy day means 5-8mm of light drizzle over 12 hours. The total volume matters, but the character of the rain matters just as much for your travel experience.
Tokyo's rain is inconvenient but manageable. You wait it out in a coffee shop. Fukuoka's rain is an event. You plan your day around it. Sapporo's rain is barely worth mentioning. You might not even bother with an umbrella.
Another factor: rainy day frequency. Tokyo gets rain on about 120 days per year. Osaka on about 110. Sapporo on only about 100. But frequency doesn't tell the full story either — Tokyo's rainy days include many with just a brief morning shower, while Fukuoka's fewer rainy days often involve all-day deluges.
The bottom line? There's no single "best" city for weather. There's only the best city for your trip, in your season, with your tolerance for rain. A couple who loves museum-hopping and doesn't mind carrying umbrellas will have a great time in Tokyo in June. A family with young kids who needs outdoor space will be happier in Sapporo. A solo traveler on a tight budget who wants amazing food and doesn't care about getting wet? Fukuoka in winter is perfect.
So Which City Should You Pick?
It depends on when you're going and what you prioritize. Here's our cheat sheet:
For minimal rain risk any time of year: Sapporo. Hokkaido skips the worst of tsuyu and typhoons. The trade-off is cold winters and less traditional "Japan" sightseeing.
For the best covered infrastructure: Osaka. Those shopping arcades are a game-changer on wet days. You can explore for hours without getting rained on.
For beautiful rain-enhanced scenery: Kyoto. Temples and gardens look stunning in light rain and mist. Just watch your step on wet stone.
For avoiding rain in autumn/winter: Any of them. October through February is relatively dry across all six cities. Pick based on what you want to see, not weather.
For summer visits (rain unavoidable): Sapporo is your best bet. Every other city on this list will soak you at some point between June and September.
City-Specific Gear Recommendations
Beyond the general packing advice in our packing guide, each city has specific gear considerations worth noting:
In Tokyo, prioritize a compact umbrella that fits in a crowded train. Space is at a premium on the Yamanote Line at rush hour, and a full-size umbrella makes you the enemy of everyone around you. Waterproof sneakers are ideal because you'll do a lot of walking on surprisingly hilly terrain — Shibuya to Harajuku doesn't look steep on a map, but your calves will disagree.
In Osaka, you can get away with lighter rain protection because of the covered arcades. A water-resistant jacket is usually sufficient — you won't be exposed for long stretches. The bigger concern is humidity, so pack moisture-wicking fabrics even if rain isn't forecasted. Osaka humidity doesn't care about forecasts.
In Kyoto, grippy shoes are non-negotiable. Temple stone pathways are treacherous when wet, and you'll be doing a lot of stair climbing at places like Fushimi Inari and Kiyomizudera. An umbrella with a wrist strap helps too — you'll want both hands free for temple visits but won't want to set your umbrella down where it might get taken accidentally.
In Sapporo, a hooded softshell jacket covers most summer rain situations. You don't need heavy-duty rain gear unless you're heading into the mountains. The temperature drops after rain are significant though — pack a light fleece layer you can throw on when the sun goes back behind the clouds.
In Fukuoka, bring your best rain gear. No compromises. The rain here is intense and frequent during summer months. A proper waterproof jacket (not just water-resistant), sturdy umbrella, and quick-dry everything. Also, the yatai food stalls operate in light rain but close in heavy downpours, so have backup dinner plans if you're counting on that iconic street food experience.
In Sendai, windproof gear matters more than in other cities. Coastal winds can turn a moderate rain into a horizontal spray that renders normal umbrellas useless. A rain jacket with a snug hood will serve you better than an umbrella on windy days. And if you're visiting Matsushima Bay, waterproof bags for your electronics are essential — there's no shelter on the boat tours, and the bay is fully exposed to coastal weather systems.
No matter which city you choose, the right gear makes all the difference. We've tested umbrellas, jackets, and shoes across all six of these cities in every season. Here's what actually works.