Weather in Tokyo in July

How July compares

July is the 2nd warmest month of the year in Tokyo and ranks 78th of 134 destinations we compare for July - see where else is hot in July. Against London's average high of 21.8°C in July, Tokyo is 6.3°C warmer by day and 8.5°C warmer at night.

Daytime and night-time in July

The typical July day in Tokyo peaks at 28.1°C, but that is an average: the warmest 10% of days reach 31.9°C or more. About 84% of days top 25°C and 1 in 3 pass 30°C. Nights average 22.0°C; one night in ten drops to 19.0°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest July day here reached 39.1°C (2018-07-23) and the coldest night 14.6°C (1993-07-06).

Rain in July

Wet (more than 8 rainy days): about 13 days with 1 mm or more, 151 mm in total. Year to year it varies a lot - the wettest July was 2020 with 341 mm, the driest 2008 with 21 mm. Humidity averages 83%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in July

The sea averages 24.7°C - warm enough to swim (22°c+). Depending on the year it ranges from 23.6°C to 25.8°C. For the warmest sea here, come in August (26.7°C).

Sunshine and daylight

Around 3.5 hours of sunshine a day (estimated from cloud cover), 14.2 hours of daylight: the sun rises about 04:37 and sets about 18:58 local time in mid-July. Average cloud cover is 75%.

Is July a good time to visit Tokyo?

It is a reasonable choice: hot days but expect showers. The best months for Tokyo on our scoring are August, September, July; months averaging 25°C or more: Jul, Aug, Sep.

Expect sticky heat, not just warmer weather

Tokyo is noticeably hotter than London in July: average daytime highs are 6.3°C higher, while humidity averages 83%. That combination can make prolonged walking feel tiring, particularly around midday. Days reaching 30°C account for 30% of the month, so pack for heat rather than treating it as an occasional possibility. Loose, breathable clothing, regular drinks and indoor breaks are sensible choices. Put more demanding outdoor plans earlier in the day and leave room to slow down when it feels uncomfortable. Evenings offer some relief, but they are still warm rather than crisp. If you struggle to sleep in warm conditions, check that your accommodation has effective cooling.

Leave room for rain and cloudy spells

July is wet, so a tightly packed outdoor itinerary is a poor fit. Keep indoor alternatives available and carry a compact umbrella or a light waterproof rather than relying on a heavy coat in the humidity. Rain on about 13 days does not mean those days are complete washouts, but it does mean you should expect interruptions. There is plenty of daylight at 14.2 hours, yet only about 3.5 hours of sunshine a day, so long days should not be confused with consistently clear skies. Shoes that cope with wet pavements and clothing that dries readily will be more useful than packing solely for sunny weather.