Kumamoto Weather
Kumamoto weather today, the 14-day forecast, and average temperature, rain and what to wear for every month — compared against Hong Kong. Best months to visit: Mar, Apr, May, Oct and Nov.
Kumamoto current weather
Kumamoto now (local time 17:15)
21°C
Partly cloudy
- Feels like
- 23°
- Humidity
- 86%
- Wind
- 5 km/h
Next 7 days · what to wear
13° – 28°C
Rain likely on 2 of 7 days
👕 Short sleeves, plus a light layer for air-conditioned interiors.
Kumamoto 14-day forecast
Today
10/4
🌦️
22°
20°
💧71%
Mon
10/5
⛅
27°
19°
💧51%
Tue
10/6
🌤️
24°
17°
💧2%
Wed
10/7
🌤️
25°
15°
💧2%
Thu
10/8
☀️
25°
13°
💧0%
Fri
10/9
⛅
27°
13°
💧27%
Sat
10/10
🌤️
28°
18°
💧25%
Sun
10/11
☀️
28°
16°
💧27%
Mon
10/12
☀️
29°
18°
💧26%
Tue
10/13
☀️
28°
19°
💧33%
Wed
10/14
☀️
28°
18°
💧21%
Thu
10/15
🌦️
29°
20°
💧15%
Fri
10/16
🌤️
29°
19°
💧11%
Sat
10/17
⛅
29°
20°
💧15%
Best time to visit Kumamoto
On temperature and rainfall, the most comfortable months in Kumamoto are Mar, Apr, May, Oct and Nov. The hottest month is August (average high 32°C) and the coldest is January (average low 2°C).
Kumamoto climate by month
| Month | Avg high | Avg low | Rain | Humidity | vs Hong Kong |
|---|---|---|---|---|---|
| Jan | 10°C | 2°C | 69 mm | 81% | -11°C |
| Feb | 12°C | 3°C | 101 mm | 79% | -10°C |
| MarBest | 15°C | 5°C | 130 mm | 78% | -10°C |
| AprBest | 20°C | 10°C | 157 mm | 78% | -9°C |
| MayBest | 25°C | 15°C | 182 mm | 79% | -7°C |
| Jun | 27°C | 19°C | 383 mm | 84% | -5°C |
| Jul | 30°C | 24°C | 394 mm | 86% | -2°C |
| Aug | 32°C | 24°C | 213 mm | 83% | -1°C |
| Sep | 28°C | 21°C | 207 mm | 84% | -4°C |
| OctBest | 23°C | 15°C | 117 mm | 82% | -7°C |
| NovBest | 18°C | 9°C | 96 mm | 81% | -9°C |
| Dec | 12°C | 4°C | 82 mm | 81% | -11°C |
Data: NASA POWER 2001–2020 climatology (MERRA-2, elevation-corrected); Hong Kong comparison uses HKO 1991–2020 normals.
Kumamoto weather month by month: what to wear
Kumamoto in OctoberBest monthThis month
October in Kumamoto is pleasantly warm: average highs of 23°C and lows of 15°C, around 117 mm of rain (some rain) and 82% humidity — about 7°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings.
Kumamoto in NovemberBest month
November in Kumamoto is mild and cool: average highs of 18°C and lows of 9°C, around 96 mm of rain (some rain) and 81% humidity — about 9°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater.
Kumamoto in December
December in Kumamoto is chilly: average highs of 12°C and lows of 4°C, around 82 mm of rain (some rain) and 81% humidity — about 11°C colder than Hong Kong.
👕 A sweater plus a coat or windbreaker.
Kumamoto in January
January in Kumamoto is cold: average highs of 10°C and lows of 2°C, around 69 mm of rain (mostly dry) and 81% humidity — about 11°C colder than Hong Kong.
👕 A warm coat over a sweater, plus a scarf.
Kumamoto in February
February in Kumamoto is chilly: average highs of 12°C and lows of 3°C, around 101 mm of rain (some rain) and 79% humidity — about 10°C colder than Hong Kong.
👕 A sweater plus a coat or windbreaker; big day–night swing, so dress in layers.
Kumamoto in MarchBest month
March in Kumamoto is chilly: average highs of 15°C and lows of 5°C, around 130 mm of rain (some rain) and 78% humidity — about 10°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Kumamoto in AprilBest month
April in Kumamoto is mild and cool: average highs of 20°C and lows of 10°C, around 157 mm of rain (wet) and 78% humidity — about 9°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers; it's wet, so pack a compact umbrella.
Kumamoto in MayBest month
May in Kumamoto is pleasantly warm: average highs of 25°C and lows of 15°C, around 182 mm of rain (wet) and 79% humidity — about 7°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers; it's wet, so pack a compact umbrella.
Kumamoto in June
June in Kumamoto is warm to hot: average highs of 27°C and lows of 19°C, around 383 mm of rain (very wet) and 84% humidity — about 5°C colder than Hong Kong.
👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.
Kumamoto in July
July in Kumamoto is warm to hot: average highs of 30°C and lows of 24°C, around 394 mm of rain (very wet) and 86% humidity — about 2°C colder than Hong Kong.
👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.
Kumamoto in August
August in Kumamoto is hot: average highs of 32°C and lows of 24°C, around 213 mm of rain (wet) and 83% humidity — about the same as Hong Kong.
👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.
Kumamoto in September
September in Kumamoto is warm to hot: average highs of 28°C and lows of 21°C, around 207 mm of rain (wet) and 84% humidity — about 4°C colder than Hong Kong.
👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.
FAQ
›What is the best time to visit Kumamoto?
On temperature and rainfall, the most comfortable months in Kumamoto are Mar, Apr, May, Oct and Nov. The hottest month is August (average high 32°C) and the coldest is January (average low 2°C).
›What's the weather like in Kumamoto in October, and what should I wear?
October in Kumamoto is pleasantly warm: average highs of 23°C and lows of 15°C, around 117 mm of rain (some rain) and 82% humidity — about 7°C colder than Hong Kong. It's one of the most comfortable months of the year to visit. What to wear: Short sleeves with a light long-sleeve or jacket for cool mornings and evenings.
›What's the weather like in Kumamoto in November, and what should I wear?
November in Kumamoto is mild and cool: average highs of 18°C and lows of 9°C, around 96 mm of rain (some rain) and 81% humidity — about 9°C colder than Hong Kong. It's one of the most comfortable months of the year to visit. What to wear: Long sleeves with a light jacket or sweater.
›When is the rainy season in Kumamoto?
Kumamoto is wettest in July, with about 394 mm on average, and driest in January, with about 69 mm.
›How cold does Kumamoto get? Does it snow?
The coldest month is January, averaging 10°C by day and 2°C at night. Early mornings get close to freezing; snow is occasional.
Planning a trip to Kumamoto?
More Japan weather
Popular destinations in October
Forecast data: Open-Meteo.com (CC BY 4.0), refreshed every 3 hours. Hottest month: August; coldest: January.