Normal weather for Japan in August
It's hot in August in Japan with an average temperature of 30°C. Temperatures this month range from a low of 27°C to a high of 32°C. At night, you can expect temperatures between 20°C and 23°C.
In August, there is an average of 148 mm of precipitation, spread over 17 days. The wind speed is around 3 Bft, mostly coming from the South.
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Japan in August |
UK | ||
|---|---|---|---|
 Average Temperature |
30°C | 22°C | |
 High Temp |
32°C | 24°C | |
| Low Temp |
27°C | 19°C | |
 Total Precipitation |
148 mm | 60 mm | |
| Rainy Days |
17 days | 10 days | |
The climate of Japan is based on weather data from Tokyo. Other spots, like Kyōto, Osaka or Hokkaido, might have different weather. You can check out all destinations in Japan for a full picture of the climate.
Start of August
The month of August starts in Japan with hot temperatures, averaging around 31°C during the day and nights close to 23°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-August
By mid-August, the average daytime temperature drops to around 30°C, with nights close to 22°C. The chance of precipitation is high during this period.
End of August
By the end of August, the average daytime temperature in Japan will be around 29°C, with nights close to 21°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Is August a good time to visit Japan?
After some sun? Then August isn’t the best time to be in Japan. The temperature is pleasant, but there’s too much chance of rain this month.
The typhoon season in Japan runs from June to November.
Temperature records for Japan in August
With 37°C, Japan hit the highest temperature in the last 10 years in August 2015. The lowest daytime temperature in this month was 20°C in 2021. The extreme night temperatures ranged from a low of 12°C to a high of 28°C.
Check out the climate of Japan for all months and discover the best travel time
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Daily Temperature in August in Japan
This chart shows the average daily temperatures, both day and night, for each day in August in Japan, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in Japan
The chart below shows the average daily precipitation in August for Japan, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 17 days of rain in Japan.
Daily UV Index in August in Japan
This chart shows the average daily UV index in August in Japan, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Japan Over the Years
This chart shows the average temperature in August in Japan, measured in degrees Celsius, over the past years.
Total Precipitation in August in Japan Over the Years
This chart shows the average precipitation in August in Japan, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for Japan
Click on a specific day in August for detailed info on the typical weather on that day in Japan. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Japan
Have you been to Japan in August?
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Average Weather in Japan by Month
Click on a month below to see detailed weather info for Japan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
