Japan stretches across 22 degrees of latitude. On any given day, Sapporo and Naha can differ by 20°C — meaning a single trip that covers both Hokkaido and Okinawa requires packing for two completely different climates. This page is the table every first-timer needs: 12 months × 4 regions, with temperature ranges, rainfall, and what locals actually wear, all in one screenshot-friendly format. Worth noting that "packing by season and getting it wrong" is itself one of the most common first-timer slip-ups — the rest are in our first-timer mistakes guide.
- April (sakura) and October-November (koyo) are Japan's most comfortable travel windows nationwide.
- June rainy season, July-August heat, September typhoons are the three summer obstacles to plan around.
- Hokkaido December-March is ski season with world-class powder; meanwhile Okinawa stays at 18-20°C and is fully travelable.
- Kyoto basin has Japan's most extreme climate range — 33°C+ in August, 1°C in January.
- Layered "onion-style" dressing is mandatory in March-May and October-November: 10°C swings within a single day are normal.
Table of Contents (click to expand)
How to read the table
We split Japan into 4 regions, each with one benchmark city (other cities in the same region typically vary by ±2-3°C):
- North = Hokkaido (benchmark: Sapporo; includes Hakodate, Otaru, Furano)
- East = Tohoku + Kanto (benchmark: Tokyo; includes Sendai, Aomori, Yokohama, Nikko)
- West = Chubu + Kansai (benchmark: Kyoto; includes Nagoya, Osaka, Kobe, Nara)
- South = Kyushu + Okinawa (benchmark: Naha; includes Fukuoka, Kumamoto)
Each cell has three lines: line 1 is temperature range (overnight low ~ daytime high); line 2 is rainfall or special weather; line 3 is the dominant clothing keyword. Source: Japan Meteorological Agency 1991-2020 normals (30-year average). Actual years vary ±2-3°C.
12-month × 4-region weather table
| Month | Hokkaido | Tohoku/Kanto | Chubu/Kansai | Kyushu/Okinawa |
|---|---|---|---|---|
| Jan | -7°C ~ 0°C ❄ Heavy snow / ski season Polar parka + snow boots | 2°C ~ 10°C ☀ Dry & cold Down jacket + beanie | 1°C ~ 9°C ☀ Dry & cold Down jacket + scarf | 14°C ~ 19°C ☀ Mild Light jacket + long sleeves |
| Feb | -7°C ~ 0°C ❄ Snow festival peak Polar parka + snow boots | 2°C ~ 10°C ☀ Driest month Down jacket + beanie | 1°C ~ 10°C ☀ Dry & cold Down jacket + scarf | 14°C ~ 19°C ☀ Mild Light jacket + long sleeves |
| Mar | -3°C ~ 4°C ❄ Snowmelt Heavy coat + waterproof boots | 5°C ~ 14°C 🌸 Late blossoms Layers (sweater + jacket) | 4°C ~ 14°C 🌸 Late blossoms Layers | 16°C ~ 21°C 🌸 Early blossoms Long sleeves + light jacket |
| Apr | 3°C ~ 12°C 🌸 Hokkaido sakura coming Sweater + windbreaker | 11°C ~ 19°C 🌸 Sakura peak Long sleeves + light jacket | 10°C ~ 20°C 🌸 Sakura peak Long sleeves + light jacket | 19°C ~ 24°C ☀ Warming up T-shirt + sunscreen |
| May | 8°C ~ 17°C 🌸 Hokkaido sakura Long sleeves + light jacket | 15°C ~ 23°C ☀ Most comfortable T-shirt / long sleeves mix | 14°C ~ 25°C ☀ Sunny & comfortable T-shirt + light pants | 22°C ~ 27°C ☀ Okinawa beach opens T-shirt + swimsuit |
| Jun | 13°C ~ 21°C ☀ No rainy season Long sleeves + light jacket | 19°C ~ 26°C 🌧 Rainy season T-shirt + rain gear | 19°C ~ 28°C 🌧 Rainy season T-shirt + rain gear | 25°C ~ 29°C 🌧 Okinawa rainy ends T-shirt + rain gear |
| Jul | 18°C ~ 25°C 🌸 Furano lavender T-shirt (light jacket at night) | 23°C ~ 30°C ☀ Hot + late rainy T-shirt + sunscreen | 23°C ~ 32°C ☀ Hot T-shirt + sunscreen + parasol | 26°C ~ 31°C 🌀 Typhoon season starts T-shirt + rain gear |
| Aug | 19°C ~ 26°C ☀ Cool summer T-shirt + light jacket | 25°C ~ 32°C ☀ Heatwave T-shirt + cooling fabric | 24°C ~ 33°C ☀ Kyoto's hottest T-shirt + cooling fabric | 27°C ~ 31°C 🌀 Frequent typhoons T-shirt + rain gear |
| Sep | 14°C ~ 22°C 🍂 Early autumn Long sleeves + light jacket | 21°C ~ 28°C 🌀 Typhoon tail Long sleeves + rain gear | 21°C ~ 29°C 🌀 Typhoon tail Long sleeves + rain gear | 26°C ~ 30°C 🌀 Typhoon tail T-shirt + rain gear |
| Oct | 7°C ~ 16°C 🍂 Foliage starts Sweater + jacket | 15°C ~ 22°C ☀ Comfortable cool Long sleeves + light jacket | 14°C ~ 22°C ☀ Comfortable cool Long sleeves + light jacket | 23°C ~ 28°C ☀ Last beach window T-shirt + light pants |
| Nov | 1°C ~ 8°C ❄ First snow Down jacket + scarf | 9°C ~ 17°C 🍂 Foliage peak Sweater + windbreaker | 8°C ~ 17°C 🍂 Kyoto koyo peak Sweater + windbreaker | 20°C ~ 24°C ☀ Cool Long sleeves + light jacket |
| Dec | -4°C ~ 2°C ❄ Heavy snow + illuminations Polar parka + snow boots | 4°C ~ 12°C ☀ Dry cold + illuminations Down jacket + beanie | 3°C ~ 11°C ☀ Dry & cold Down jacket + scarf | 16°C ~ 21°C ☀ Mild Light jacket + long sleeves |
Source: Japan Meteorological Agency (JMA) 1991-2020 normals. Actual years fluctuate ±2-3°C.
🌸 Spring (March-May) highlights
10°C daily swings are normal: 8°C morning, 18°C noon is typical for March-April. Onion-style layering (T-shirt + light sweater + windbreaker) is the only thing that works.
Spring is peak season within peak season — the first week of April can push Tokyo hotel prices to 2-3× the off-peak rate. Budget travelers should target mid-to-late May: temperatures stay pleasant but tourist volume drops by roughly 60%. Hokkaido has Japan's latest sakura, blooming early-to-mid May, which is also the only time the rest of Japan has already moved past the cherry-blossom peak. If you're still weighing "which month is best to visit Japan" beyond weather alone — crowds, airfare, festivals — see our best time to visit Japan breakdown.
☀ Summer (June-August) highlights
July-August heat is genuinely dangerous: Kyoto, Osaka, and Tokyo can hit 35-38°C with high humidity. Plan indoor activities (depachika, museums, teamLab) for the noon-to-3 PM window; save outdoor for early morning and evening.
Okinawa beach season opens in May: Water temperature already 25°C+, earlier than Taiwan's Kenting. September is still swimmable but watch typhoon forecasts.
Summer's biggest advantage is Hokkaido — at 18-26°C, it's Japan's best escape from mainland heat. Furano's lavender fields peak early-to-mid July, and the colorful flower fields of Biei nearby make it the season Japanese travelers themselves prize most. Pairing this with the Hokkaido JR Pass for a 5-7 day loop is excellent value.
🍂 Autumn (September-November) highlights
October is the most comfortable month nationwide: 15-22°C, low rainfall, and 40% fewer crowds than November's foliage peak. Budget travelers should target October over November.
September still carries typhoon risk, especially for Kyushu and Okinawa. October opens the "golden window": comfortable temperatures, no rainy season, and koyo arriving. Late November is Japan's second-highest tourism peak (after April sakura), pushing Kyoto hotel prices back to peak rates — book at least three months ahead if you want centrally located lodging.
September–October is peak typhoon season, when flight delays and cancellations are most likely all year — check your policy's delay threshold before you fly, via our flight delay insurance claims guide.
❄ Winter (December-February) highlights
Tokyo/Kyoto "dry cold" ≠ harsh: 2-10°C looks low on paper, but humidity stays under 40% — when there's no wind, it actually feels milder than 10°C in Taipei's damp cold.
Okinawa is still travelable: 14-19°C — Okinawa road trips work perfectly in winter, avoiding the summer heat with off-season hotel rates.
Shirakawa-go illuminations only run 6 days: The winter night illumination event is Japan's most photogenic winter scene, but tickets must be booked roughly 4 months in advance.
Winter travel hinges on "region determines luggage" — packing for Hokkaido skiing vs Okinawa diving differs by literally two suitcases. Check the regional forecast (jma.go.jp or tenki.jp) one week before departure; modern climate variability makes "warm December" and "February cold snap" both more extreme than the 30-year averages suggest.
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- Q1：When is the best month to visit Japan?
- April (sakura) and October-November (koyo) are the most comfortable windows. Both deliver 15-22°C temperatures, low rainfall, and Japan's most photogenic scenery. To dodge peak crowds, target mid-to-late May or late November — the weather still works but tourist volume drops sharply.
- Q2：When is Japan's rainy season and should I avoid it?
- Honshu's tsuyu runs early June to mid-July; Okinawa starts about two weeks earlier (mid-May to late June); Hokkaido has almost no rainy season at all. Rain is usually drizzle, not all-day downpour, so most attractions still work — but viewpoint trips like Mt. Fuji and Shirakawa-go suffer from poor visibility. Hotels are 20-30% cheaper, making this a great window for budget travelers.
- Q3：How should I prepare for typhoon season?
- Typhoon peak runs July through October, with September the most active. Okinawa and Kyushu take the brunt; areas north of Tokyo see less impact. Start checking the Japan Meteorological Agency typhoon track one week before departure, and choose travel insurance that includes weather-related disruption coverage. Indoor venues (teamLab, museums, depachika basements) are your typhoon-day Plan B.
- Q4：What should I wear in Okinawa in winter?
- Okinawa winters run 18-20°C daytime, 14-16°C at night — a light jacket (denim or packable down) is enough. Sea breeze can drop the wind chill, so pack a scarf. Water temperature stays around 22°C; diving needs a wetsuit but snorkeling is still fine. Compared to mainland Japan in winter, you can pack roughly half the bulky layers.
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