Kumamoto weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for Kumamoto, Japan. Like most weather services, we show Kumamoto at one spot: Kumamoto, its largest city. At 6:45 AM local time it was clear and 11°C (51°F). Light rain for 1 of the next 24 hours (under 1 mm/h, 0.1 mm total) — cloudy, but fine to be out. Best months for weather: Oct–Nov.
Current conditions
- Clouds
- 0%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Light rain for 1 of the next 24 hours (under 1 mm/h, 0.1 mm total) — cloudy, but fine to be out
Daily Forecast
Best Time to Visit
Peak season Oct–NovOff season Jun–Jul, Jan–Feb
About Kumamoto weather
Is it raining in Kumamoto right now?
No. It’s clear and 11° right now. Light rain for 1 of the next 24 hours (under 1 mm/h, 0.1 mm total) — cloudy, but fine to be out.
What’s the weather like in Kumamoto this week?
Over the next 7 days, expect highs of 16–24° and lows of 8–15°. Rain is likely on 2 of 7 days (Monday, Thursday). The driest day looks like Sunday.
Has it been raining in Kumamoto lately?
In the past 7 days, Kumamoto had 3 rainy days and 31.8 mm of rain in total.
What should I pack for Kumamoto?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Kumamoto weather by month
When is the best time to visit Kumamoto?
Based on weather alone, the best time to visit Kumamoto is Oct–Nov, according to NASA's 2001–2025 climate averages. Jun–Jul, Jan–Feb tends to be the least pleasant. Average highs run from 8°C (47°F) in January to 30°C (86°F) in August.
What is the rainiest month in Kumamoto?
July is the wettest month, with about 394 mm (15.5 in) of rain on average. January is the driest, with about 69 mm (2.7 in).
What is the hottest month in Kumamoto?
August is the warmest, with average highs of 30°C (86°F) and lows of 23°C (73°F). January is the coolest, with highs of 8°C (47°F) and lows of 0°C (33°F).
How warm is the sea in Kumamoto?
The sea is warmest in August at about 30°C (86°F) and coolest in February at about 11°C (51°F). It is comfortable for swimming (22°C or more) in Jun–Oct.
Kumamoto weather month by month
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Kumamoto), sea temperature from Open-Meteo Marine, forecast and current conditions from Open-Meteo. Page updated . How we rate months
Compare places in Kumamoto
Weather can differ a lot within Kumamoto: coasts, hills and mountains each have their own climate.
| Place | Best months | Rainy months | Highs | Rain a year |
|---|---|---|---|---|
| Kumamoto | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Kotō | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Honmachi | Oct–Nov | Apr–Sep | 9–30°C | 2,327 mm |
| Amakusa | Oct–Nov | Apr–Sep | 11–30°C | 2,156 mm |
| Tamana | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Kōshi | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Uki | Oct–Nov | Apr–Sep | 9–30°C | 2,327 mm |
| Arao | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Kikuchi | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Yamaga | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Okino | Oct–Nov | Apr–Sep | 8–30°C | 2,131 mm |
| Hondomachi-hondo | Oct–Nov | Apr–Sep | 11–30°C | 2,156 mm |