Tokyo in August: weather, what to wear and what's on

Tokyo weather in August

Averages for 1991–2020 at the JMA's Tokyo station (25 m above sea level).

High

31.3°C (88°F)

Low

23.5°C (74°F)

Precipitation

154.7 mm

Wet days

7.9 days

Sunshine

174 hours

Highs are 1.4°C above July and 3.8°C above September.

That is 11.0°C above Tokyo's yearly average high of 20.3°C.

Of our 14 places with temperature records, Tokyo is the 7th coldest in August: 0.5°C cooler than Naha and level with Kanazawa.

August is Tokyo's 5th wettest month (154.7 mm).

Of our 15 places, Tokyo has the 7th lowest precipitation in August: 22.1 mm less than Kawaguchiko and 0.9 mm more than Kyoto.

Rain of 1 mm or more falls on 7.9 days, and 10 mm or more on 3.8 days.

Rain of 30 mm or more in one day falls on 1.4 days, and 50 mm or more on 0.8 days.

22.6 days reach 30°C or more, and 3.0 reach 35°C or more.

On 9.9 nights the low stays at 25°C or above.

The sun is out for 40% or more of the possible hours on 16.3 days, and 3.3 days have under 0.1 hours of sunshine.

By the JMA's cloud records, 0.7 days are clear and 14.8 are overcast.

On 15 August 2027 the sun rises at 4:59 and sets at 18:31 in Tokyo, giving 13 hours 32 minutes of daylight (NAOJ).

Average temperature

26.9°C (80°F)

Humidity

74%

Days of 25°C or more

29.4 days

Early, mid and late August

By the last ten days of August the average high in Tokyo is 1.3°C lower than in the first ten.

By ten-day totals, 21–31 August is the wettest (70.1 mm) and 1–10 August the driest (35.8 mm).

What to wear in Tokyo in August

Hot: highs around 31.3°C

• Short sleeves and light, breathable clothes. A light layer for cold air-conditioning on trains and in shops.
• Heat: 22.6 days reach 30°C or more. A hat, water and sunscreen.
• Warm nights: on 9.9 nights the temperature stays at 25°C or above.
• A folding umbrella: rain falls on 7.9 days.

Pack

• Folding umbrella
• Hat, sunscreen and a water bottle
• A light layer for air-conditioning

• Our clothing rules

Rainy season and typhoons

In an average August, 0.8 typhoons come within 300 km of the Kanto-Koshin region; across Japan, 3.3 come within 300 km and 0.9 make landfall (JMA, 1991–2020).

August records in Tokyo

The extremes the JMA has measured in August at its Tokyo station.

Hottest August day

39.1°C (102°F) on 3 August 1994 (records since 1875)

Coldest August night

15.4°C (60°F) on 27 August 1917 (records since 1875)

Wettest August day

234.5 mm on 27 August 1993 (records since 1875)

Holidays and crowds in August

National holidays in August 2027:

• Wed 11 August — Mountain Day

In August 2025, hotels and inns across Tokyo were 74.5% full on average (9th busiest of 12 months). Foreign guests spent 4.69 million nights there that month (Japan Tourism Agency). That compares with 73.5% in July and 76.5% in September.

• Japan in August: visitor numbers and busy travel days
• Holidays in August
• Obon

What's on in Tokyo in August

Tokyo before and after August

• Tokyo in July
• Tokyo in September
• All 12 months in Tokyo

Other places in August

• All 15 places in August

Related items

• Tokyo by month
• Japan in August
• Tokyo in July
• Tokyo in September