Weather in Tokyo in August 2025
- August is usually the hottest month of the year in Tokyo;
Average weather
Average temperature in Tokyo in August
Going from a maximum of +37°C during the day to a minimum of +25°C during the night, the temperature in August averages around +34°C.
The average maximum temperature goes up 8% by the end of the month, compared with the beginning of the month, from +33°C to +34°C.
Is Tokyo warm or cold in August?
Tokyo is typically hot in August.
Maximum temperatures go up compared to the previous month from +29°C to +31°C. The minimum temperature also goes up from +23°C to +25°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
August is the hottest month in Tokyo, here is the comparison with other months:
Water temperature in Tokyo in August
Water in Tokyo in August is Warm. It varies from +24°C to +27°C, with an average of +26°C. The air temperature averaging +31°C is higher than the water temperature.
The water temperature in August is one of the warmest of the entire year:
Can you swim in Tokyo in August?
Climate in Tokyo in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +31°C | +27°C | ||||
| Min. temperature | ||||||
| +15°C | +17°C | +12°C | ||||
| Max. temperature | ||||||
| +38°C | +38°C | +37°C | ||||
| Rainfall | ||||||
| 203 mm | 165 mm | 233 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +24°C | +26°C | +25°C | ||||
| Humidity | ||||||
| 76% | 74% | 74% | ||||
| Air pressure | ||||||
| 1007 HPa | 1008 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 2 | 2 | 2 | ||||
| Cloudy days | ||||||
| 9 | 9 | 8 | ||||
| Rainy days | ||||||
| 17 | 17 | 18 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August often has better weather than July. It’s getting warmer as August arrives. The average maximum temperature goes up from +29°C to +31°C during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 203 mm to 165 mm. It feels drier, as humidity decreases from 76% to 74%. The average wind speed doesn’t change much during August, staying around 4 m/s. The amount of sunny days stay about the same, averaging 2 sunny days during the month.
September brings much the same weather, it remains good.
Wind
The average wind speed is 5 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Tokyo is gradually increasing during August, going from 4 m/s to 7 m/s over the course of the month.
Rain
How was the weather last August in Tokyo?
Climate Change over Years
The climate in Tokyo in August has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+18°C) and the highest in 2023 (+22°C). The driest year was 1984 with only 896 mm of rainfall, and the wettest year was 2021 with 5634 mm.
FAQ
Is August a good time to visit Tokyo?
Can you sunbathe in Tokyo in August?
Can you swim in Tokyo in August?
Is Tokyo rainy in August?
Is it sunny in Tokyo in August?
Other cities in Japan
Monthly weather in Tokyo
Source of the data
For this page, we’ve looked at the typical weather in Tokyo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.