Climate averages 1991–2020
Kamisu weather
in August.
A hot, wet month: the warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Kamisu: daytime highs average 28.3°C and nights cool to about 23.7°C. By daytime temperature it is the warmest month of the year.
Expect about 90 mm of rain on roughly 9 days, which makes August a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 31 min on an average August day.
The nearest other city in this atlas is Katori-shi (15 km away). In August its highs average 29.2°C, 0.9°C warmer than Kamisu, with 103 mm of rain.
Among the 303 cities listed in Japan, Kamisu ranks joint 230th of 303 for the warmest August highs and 6th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Kamisu is 0.9°C cooler than that mean.
From August to September, average highs fall by 3.0°C to 25.3°C, and monthly rainfall rises from 90 mm to 174 mm.
The annual picture
August 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
Kamisu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.8°C3.2°C | 3.2°C | 89 | 9.3 | 10.010 h |
| February | 9.2°C3.2°C | 3.2°C | 85 | 9.3 | 10.911 h |
| March | 12.1°C5.9°C | 5.9°C | 142 | 13.0 | 11.912 h |
| April | 16.4°C10.2°C | 10.2°C | 126 | 12.5 | 13.113 h |
| May | 20.4°C14.8°C | 14.8°C | 145 | 12.2 | 14.014 h |
| June | 23.1°C18.4°C | 18.4°C | 164 | 13.1 | 14.515 h |
| July | 26.7°C22.1°C | 22.1°C | 140 | 12.0 | 14.314 h |
| August, selected | 28.3°C23.7°C | 23.7°C | 90 | 9.2 | 13.514 h |
| September | 25.3°C21.3°C | 21.3°C | 174 | 13.6 | 12.412 h |
| October | 20.6°C16.5°C | 16.5°C | 232 | 13.9 | 11.311 h |
| November | 16.1°C11.2°C | 11.2°C | 121 | 11.5 | 10.310 h |
| December | 11.3°C6.0°C | 6.0°C | 86 | 10.2 | 9.810 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
August in nearby cities
- Katori-shi in AugustJapan · 15 kmHigh 29.2°C · Low 23.5°C · 103 mm rain
- Narita in AugustJapan · 34 kmHigh 30.2°C · Low 23.3°C · 114 mm rain
- Ryūgasaki in AugustJapan · 44 kmHigh 30.0°C · Low 23.3°C · 119 mm rain
- Sakura in AugustJapan · 44 kmHigh 29.8°C · Low 23.6°C · 114 mm rain
- Inzai in AugustJapan · 46 kmHigh 30.0°C · Low 23.3°C · 114 mm rain
- Tsuchiura in AugustJapan · 46 kmHigh 29.9°C · Low 23.2°C · 119 mm rain
- Ishioka in AugustJapan · 48 kmHigh 29.5°C · Low 23.1°C · 127 mm rain
- Ushiku in AugustJapan · 49 kmHigh 30.0°C · Low 23.1°C · 119 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 Kamisu) is explained once on the Kamisu year overview and on the Sources, method and limits page.