What August feels like in Tokyo
August is the height of summer in Tokyo — the warmest month of the year. Expect proper heat in the afternoon — slow down between noon and four. Little changes after sunset — nights stay warm, only slightly below the daytime level. High humidity makes the heat feel heavier and sticky, especially on still afternoons.
Rain in Tokyo in August
Expect a mix of dry and wet days, with rain about one day in 3. Rainy days are intense, averaging about 9.8 mm (0.4 in) — downpours rather than drizzle. Across the year Tokyo averages about 11.4 mm per rainy day, so August is typical.
Daylight and sunshine in August
On 15 August the sun rises at about 5:00 am and sets around 6:33 pm local time, giving 13 h 33 min of daylight. Days are getting shorter: 49 min less daylight than in mid-July. About 75% of daylight hours are sunny; in short, there are plenty of bright spells.
How August compares to the rest of the year
Ranked by average high, August comes out as the warmest month in Tokyo. Against July, the average high is 1.5°C (2.7°F) higher, with 41 mm less rain. After this the year turns: September is already cooler. September averages a high of 26.9°C (80.4°F).
Who August suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Tokyo in August
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Sun Protection
Sunscreen, a hat and sunglasses; light breathable clothes.
Quick questions
How warm is Tokyo in August?
It feels hot: typical highs are 30.8°C (87.4°F), with lows near 24.1°C (75.4°F).
Does it rain a lot in Tokyo in August?
It does: about 12 rainy days bring roughly 118 mm, so plan some indoor options.
What should I wear in Tokyo in August?
Based on the averages: rain protection and sun protection. There is little need to change for the evening.
Is August or September better for visiting Tokyo?
On our 12-month climate ranking, September comes out ahead (#4 of 12 vs #6). September is cooler and has more rainy days.