Japan weather averages

Going to Japan? Find the best month to visit Japan based on the weather.

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Check Japan weather averages before you book your next holiday in 2018/2019. Today's maximum temperature in Japan is expected to be 26°C, while the average maximum temperature in June is 25°C. The holiday weather guide shown above is for Tokyo.

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Metric (°C / mm)  |  Imperial (°F / inches)

Japan weather averages: best month

Japan Best month Averages
Warmest August 31°C
Sunniest January, February, March, May, August & December 6 hours per day
Least rain January & December 9 days
Warmest sea August 26°C

Japan climate guide

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Japan weather overview

Japan, a group of mountainous volcanic islands off the coast of Asia, has a predominantly temperate, seasonal climate with cool to cold but sunny winters, warm to hot summers and mild weather in the spring and autumn. However, there are exceptions to this: the island of Hokkaido and the northern areas of Honshu experience heavy snows in the winter months when cold winds gust in from Siberia, gathering moisture from the sea as they come. In central and southern Japan, winter is the (relatively) dry season while there is moderate rainfall in the summer and autumn with the chance of a typhoon, accompanied by heavy rainfall, blowing in from the South China Sea from July to September. Southern summers tend to be warm and humid with heavy cloud cover. The mountain areas are usually the most pleasant parts of Japan in the summer months when conditions are predominantly sunny and crisp. Spring is the best time to visit the lower parts of the country; it brings not only fresh, sunny weather but also the legendary 'cherry blossom time'.

What to pack for Japan weather

While light clothes are fine in the summer, you should combine light clothing with some warmer attire in the spring and autumn, and take much warmer clothing for the winter and visits to the mountain areas. Go prepared for rain in the summer.

Tropical cyclone risk: Japan typhoon season

% of month affected by tropical cyclones
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The Japan tropical cyclone risk chart above shows the typhoon season for Tokyo, Japan.

More about tropical cyclones

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Japan weather averages by month

Check Japan holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Japan weather with the USA

Below the Japan weather chart shows maximum daytime temperature for Japan (Tokyo) and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Japan (Tokyo)
USA (Washington)
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Metric (°C / mm)  |  Imperial (°F / inches)

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More Japan destinations

All destinations (A to Z)

Can't see your chosen destination? Use our A to Z search to find your required the holiday weather guide:

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