Climate and Average Weather Year Round in Japan

We show the climate in Japan by comparing the average weather in 3 representative places: Tokyo, Osaka, and Sapporo.

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Average High and Low Temperature in Japan

Average High and Low Temperature in JapanJanFebMarAprMayJunJulAugSepOctNovDec-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°F77368748916510279944-28118NowNowOsakaOsakaSapporoSapporoTokyoTokyo
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
Tokyo 49°F50°F55°F65°F72°F77°F84°F86°F80°F70°F61°F53°F
Osaka 48°F49°F56°F66°F75°F81°F88°F90°F83°F73°F62°F53°F
Sapporo 28°F30°F37°F51°F63°F69°F75°F77°F71°F59°F45°F33°F
Tokyo 37°F38°F43°F52°F61°F68°F74°F76°F70°F59°F49°F41°F
Osaka 35°F36°F41°F51°F59°F68°F75°F76°F70°F58°F48°F39°F
Sapporo 11°F13°F22°F34°F44°F53°F61°F63°F54°F41°F29°F17°F


Average Hourly Temperature in TokyoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcoolwarmhotcomfortablevery cold


Average Hourly Temperature in OsakaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcoolwarmhotvery coldcomfortablecomfortablevery cold


Average Hourly Temperature in SapporoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingcoldcoldcoolcoolwarmvery coldvery coldcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies in Japan

Chance of Clearer Skies in JapanJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%7627766423NowNowOsakaOsakaSapporoSapporoTokyoTokyo
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Tokyo 72%65%55%48%42%31%34%48%47%58%66%74%
Osaka 70%63%55%50%44%32%35%49%51%63%70%75%
Sapporo 24%28%44%48%44%48%50%49%55%63%52%34%

Daily Chance of Precipitation in Japan

Daily Chance of Precipitation in JapanJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%481253194522NowNowOsakaOsakaSapporoSapporoTokyoTokyo
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Tokyo 4.8d6.3d9.6d9.7d10.5d13.2d12.5d10.9d12.0d9.4d7.0d4.6d
Osaka 6.5d7.3d9.8d10.0d10.4d13.4d13.4d11.4d12.3d9.4d7.2d6.6d
Sapporo 11.2d9.9d7.8d7.1d8.1d7.5d9.0d10.7d11.1d12.3d13.2d13.3d

Average Monthly Rainfall in Japan

Average Monthly Rainfall in JapanJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in7.
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
Tokyo 1.9″2.5″3.9″4.4″4.6″6.1″5.2″5.1″7.4″6.0″3.3″1.9″
Osaka 1.9″2.8″4.1″4.8″5.6″7.5″6.7″4.9″6.9″5.0″3.0″2.1″
Sapporo 0.4″0.5″0.9″1.8″2.2″2.3″3.5″5.3″4.8″3.7″2.8″1.0″

Average Monthly Snowfall in Japan

Average Monthly Snowfall in JapanJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 in0.617.6NowNowOsakaOsakaSapporoSapporo
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
Tokyo 0.5″0.6″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.1″
Osaka 0.1″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.1″
Sapporo 14.3″11.8″5.7″0.8″0.0″0.0″0.0″0.0″0.0″0.5″6.0″16.8″

Hours of Daylight in Japan

Hours of Daylight in JapanJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr14.69.715.49.0NowNowOsakaOsakaSapporoSapporoTokyoTokyo
The number of hours during which the Sun is at least partly above the horizon.
Tokyo 10.0h10.9h12.0h13.1h14.1h14.5h14.3h13.5h12.4h11.3h10.3h9.8h
Osaka 10.1h10.9h12.0h13.1h14.0h14.4h14.2h13.4h12.4h11.3h10.4h9.9h
Sapporo 9.4h10.5h12.0h13.4h14.7h15.3h15.0h13.9h12.5h11.0h9.7h9.1h

Chance of Muggy Conditions in Japan

Chance of Muggy Conditions in JapanJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%919650NowNowOsakaOsakaSapporoSapporoTokyoTokyo
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Tokyo 0.0d0.0d0.0d0.2d1.2d10.3d24.6d27.4d14.9d1.8d0.0d0.0d
Osaka 0.0d0.0d0.0d0.3d1.5d12.1d27.5d28.3d15.1d2.3d0.1d0.0d
Sapporo 0.0d0.0d0.0d0.0d0.0d0.5d8.1d13.1d3.3d0.1d0.0d0.0d

Average Wind Speed in Japan

Average Wind Speed in JapanJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph11 mph11 mph9.
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Sapporo 10.210.510.

Average Water Temperature in Japan

Average Water Temperature in JapanJanFebMarAprMayJunJulAugSepOctNovDec35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F79577040NowNowOsakaOsakaSapporoSapporoTokyoTokyo
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Tokyo 59°F57°F58°F60°F65°F70°F75°F78°F76°F71°F67°F62°F
Osaka 60°F59°F59°F61°F65°F70°F76°F80°F78°F73°F67°F63°F
Sapporo 43°F41°F41°F44°F49°F57°F64°F70°F68°F62°F54°F47°F

Tourism Score in Japan

Tourism Score in JapanJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.40.16.5NowNowOsakaOsakaSapporoSapporo
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score in Japan

Beach/Pool Score in JapanJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.53.2NowNowOsakaOsakaSapporoSapporoTokyoTokyo
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season in Japan

Growing Season in JapanJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowSapporoSapporoTokyoTokyo
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days in Japan

Growing Degree Days in JapanJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°FNowNowOsakaOsakaSapporoSapporoTokyoTokyo
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy in Japan

Average Daily Incident Shortwave Solar Energy in JapanJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh5.
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec

This report illustrates the typical weather for Tokyo, Osaka, and Sapporo year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:


The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

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