Climate averages 1991–2020
Kumamoto weather
in June.
A warm, very wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Kumamoto: daytime highs average 25.7°C and nights cool to about 19.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 403 mm of rain on roughly 17 days, which makes June a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 16 min on an average June day.
The nearest other city in this atlas is Ōmuta (34 km away). In June its highs average 25.6°C, about as warm as Kumamoto, with 393 mm of rain.
Among the 303 cities listed in Japan, Kumamoto ranks joint 55th of 303 for the warmest June highs and 293rd of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Kumamoto is 1.3°C warmer than that mean.
From June to July, average highs rise by 3.3°C to 29.0°C, and monthly rainfall falls from 403 mm to 301 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Kumamoto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.0°C3.0°C | 3.0°C | 78 | 10.6 | 10.310 h |
| February | 10.5°C3.4°C | 3.4°C | 99 | 10.4 | 11.011 h |
| March | 14.0°C6.1°C | 6.1°C | 142 | 13.0 | 12.012 h |
| April | 18.8°C10.5°C | 10.5°C | 154 | 12.1 | 13.013 h |
| May | 23.2°C15.2°C | 15.2°C | 178 | 11.9 | 13.814 h |
| June, selected | 25.7°C19.4°C | 19.4°C | 403 | 17.0 | 14.314 h |
| July | 29.0°C23.2°C | 23.2°C | 301 | 16.2 | 14.114 h |
| August | 30.4°C24.0°C | 24.0°C | 135 | 13.0 | 13.413 h |
| September | 27.5°C20.8°C | 20.8°C | 156 | 11.7 | 12.412 h |
| October | 22.5°C15.1°C | 15.1°C | 98 | 8.3 | 11.411 h |
| November | 16.9°C9.7°C | 9.7°C | 92 | 8.8 | 10.511 h |
| December | 11.2°C4.9°C | 4.9°C | 84 | 10.0 | 10.010 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Ōmuta in JuneJapan · 34 kmHigh 25.6°C · Low 19.3°C · 393 mm rain
- Honmachi in JuneJapan · 35 kmHigh 26.2°C · Low 20.2°C · 428 mm rain
- Kurume in JuneJapan · 59 kmHigh 26.3°C · Low 18.6°C · 372 mm rain
- Saga in JuneJapan · 60 kmHigh 25.8°C · Low 18.9°C · 344 mm rain
- Amakusa in JuneJapan · 61 kmHigh 25.8°C · Low 20.1°C · 445 mm rain
- Isahaya in JuneJapan · 61 kmHigh 24.0°C · Low 19.6°C · 444 mm rain
- Tosu in JuneJapan · 64 kmHigh 26.4°C · Low 18.7°C · 372 mm rain
- Ōmura in JuneJapan · 70 kmHigh 25.0°C · Low 20.3°C · 381 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Kumamoto) is explained once on the Kumamoto year overview and on the Sources, method and limits page.