Weather in Tokyo in June

How June compares

June is the 4th warmest month of the year in Tokyo and ranks 105th of 134 destinations we compare for June - see where else is hot in June. Against London's average high of 19.6°C in June, Tokyo is 4.9°C warmer by day and 6.7°C warmer at night.

Daytime and night-time in June

The typical June day in Tokyo peaks at 24.5°C, but that is an average: the warmest 10% of days reach 28.0°C or more. Roughly 1 in 2 days top 25°C and 1 in 50 pass 30°C. Nights average 18.0°C; one night in ten drops to 15.2°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest June day here reached 32.2°C (2011-06-29) and the coldest night 10.7°C (2010-06-02).

Rain in June

Wet (more than 8 rainy days): about 14 days with 1 mm or more, 164 mm in total. Year to year it varies a lot - the wettest June was 2019 with 253 mm, the driest 2007 with 64 mm. Humidity averages 82%.

Sea temperature in June

The sea averages 21.3°C - bracing (18-22°c). Depending on the year it ranges from 20.4°C to 22.1°C. For the warmest sea here, come in August (26.7°C).

Sunshine and daylight

Around 2.8 hours of sunshine a day (estimated from cloud cover), 14.4 hours of daylight: the sun rises about 04:25 and sets about 18:59 local time in mid-June. Average cloud cover is 80%.

Is June a good time to visit Tokyo?

It is a reasonable choice: warm 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.

Warm days, with humidity the main catch

The typical daytime high is comfortable summer territory, but humid air means light, breathable clothing is more useful than heavy layers. Days reach 25°C around 44% of the time, while 30°C days account for just 2%, so extreme heat is not the usual June experience. Even so, allow yourself breaks during midday walks rather than assuming the temperature alone tells you how comfortable you will feel. Nights average 18°C, making evenings mild rather than cold. A light layer is sensible if you tend to feel chilly after dark, but your main packing priority should be clothes that are comfortable in warm, damp conditions.

Plan for wet weather, not long spells of sun

Rain is a meaningful part of the decision, not a minor packing detail. About 14 days have measurable rain, so carry an umbrella and choose footwear you can tolerate getting wet. That does not mean every wet day is a washout, but it does make a rigid outdoor schedule a poor fit. Sunshine averages only 2.8 hours within 14.4 hours of daylight: there is plenty of time to be out, but much less bright sunshine than the long days might suggest. Keep indoor alternatives available and use dry spells for longer walks. June suits travellers who can adapt their days more than those who need reliably dry weather.