Weather in Tokyo in October

How October compares

October is the 6th warmest month of the year in Tokyo and ranks 104th of 134 destinations we compare for October - see where else is hot in October. Against London's average high of 14.6°C in October, Tokyo is 6.0°C warmer by day and 5.7°C warmer at night.

Daytime and night-time in October

The typical October day in Tokyo peaks at 20.6°C, but that is an average: the warmest 10% of days reach 24.3°C or more. Roughly 1 in 13 days top 25°C and 1 in 1000 pass 30°C. Nights average 14.1°C; one night in ten drops to 10.2°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest October day here reached 30.6°C (2018-10-07) and the coldest night 5.3°C (2002-10-31).

Rain in October

Wet (more than 8 rainy days): about 13 days with 1 mm or more, 211 mm in total. Year to year it varies a lot - the wettest October was 2004 with 593 mm, the driest 1997 with 43 mm. Humidity averages 79%.

Sea temperature in October

The sea averages 21.6°C - bracing (18-22°c). Depending on the year it ranges from 20.8°C to 22.4°C. For the warmest sea here, come in August (26.7°C).

Sunshine and daylight

Around 4.2 hours of sunshine a day (estimated from cloud cover), 11.1 hours of daylight: the sun rises about 05:48 and sets about 17:06 local time in mid-October. Average cloud cover is 62%.

Is October a good time to visit Tokyo?

October is not the strongest month here: warm days and frequent rain. The best months for Tokyo on our scoring are August, September, July; months averaging 25°C or more: Jul, Aug, Sep.

Warm enough for walking, cooler after dark

Tokyo is noticeably warmer than London in October, with an average daytime high 6°C higher. That makes it a useful choice if you want mild weather for spending time outside rather than a hot-weather holiday. The warmer days can reach 24.3°C or more, so keep a light top handy beneath your layers. Evenings need a different approach: the average low is 14.1°C, and colder nights can fall to 10.2°C or below. A jumper and light jacket are sensible, especially if you expect to stay out late. Humidity averages 79%, so breathable clothes are a better starting point than heavy autumn clothing.

Rain is the main compromise

The catch is that October is wet, not simply cool and cloudy. About 13 days receive measurable rain, so a waterproof jacket and shoes that cope with wet pavements deserve space in your luggage. Keep your outdoor plans flexible and leave room to move activities indoors when conditions turn. Sunshine averages about 4.2 hours within 11.1 hours of daylight: there is time to explore, but you should not expect clear skies throughout the day. For a long-haul trip, that trade-off matters. October suits travellers who value comfortable temperatures and can work around rain; it is less convincing if dry weather is central to the holiday.