Tokyo weather in August
In August, Tokyo has an average high of 31 °C87 °F and an average low of 23 °C74 °F, with about 134 mm5.3 in of precipitation. August is the warmest month of the year and ranks 7th for precipitation.
How August compares with other months
Compared with July, August is 1.3 °C2.4 °F warmer on average and drier by 18 mm0.7 in. Compared with September, August is 3.2 °C5.9 °F warmer on average and drier by 76 mm3.0 in. Daylight lasts about 13.5 hours around the middle of the month. Average relative humidity is 81% and the average cloud amount 65%.
Is August a good time to visit Tokyo?
August is not among the most comfortable months by our comfort score: it is hot (average high 31 °C87 °F), it is fairly wet (134 mm5.3 in) and it is humid (81%). The most comfortable months in Tokyo are May.
What to wear in August
For Tokyo in August, pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
August in nearby places
Other months in Tokyo
- January9 °C48 °F / 1 °C33 °F
- February10 °C50 °F / 1 °C34 °F
- March13 °C56 °F / 4 °C39 °F
- April18 °C65 °F / 9 °C48 °F
- May23 °C73 °F / 14 °C57 °F
- June25 °C78 °F / 18 °C64 °F
- July29 °C84 °F / 22 °C71 °F
- August31 °C87 °F / 23 °C74 °F
- September27 °C81 °F / 20 °C68 °F
- October22 °C71 °F / 14 °C58 °F
- November17 °C62 °F / 9 °C48 °F
- December11 °C52 °F / 3 °C38 °F
Frequently asked questions
How warm is Tokyo in August?
In August the average high in Tokyo is 31 °C (87 °F) and the average low is 23 °C (74 °F).
Does it rain a lot in Tokyo in August?
On average about 134 mm (5.3 in) of precipitation falls in August; it ranks 7th of the 12 months.
Is August the warmest month in Tokyo?
Yes. August is the warmest month in Tokyo. The coldest month is January, with an average low of 1 °C (33 °F).
How long is the day in Tokyo in August?
In the middle of August the day in Tokyo lasts about 13.5 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Tokyo in August?
The average relative humidity in August is about 81%. Combined with warm days, it can feel muggy.
How cloudy is Tokyo in August?
On average about 65% of the sky is covered by cloud in August. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.