Climate averages 1991–2020
Kasuga weather
in August.
A hot, wet month: the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Kasuga: daytime highs average 31.1°C and nights cool to about 24.0°C. By daytime temperature it is the warmest month of the year.
Expect about 171 mm of rain on roughly 15 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 24 min on an average August day.
The nearest other city in this atlas is Fukuoka (9 km away). In August its highs average 30.7°C, about as warm as Kasuga, with 171 mm of rain.
Among the 303 cities listed in Japan, Kasuga ranks joint 14th of 303 for the warmest August highs and joint 220th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Kasuga is 1.9°C warmer than that mean.
From August to September, average highs fall by 3.6°C to 27.4°C, and monthly rainfall rises from 171 mm to 179 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
Kasuga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.6°C2.0°C | 2.0°C | 63 | 9.7 | 10.210 h |
| February | 10.1°C2.3°C | 2.3°C | 73 | 9.3 | 11.011 h |
| March | 13.7°C4.7°C | 4.7°C | 115 | 11.5 | 12.012 h |
| April | 19.0°C9.1°C | 9.1°C | 130 | 11.0 | 13.013 h |
| May | 23.7°C14.2°C | 14.2°C | 147 | 10.6 | 13.914 h |
| June | 26.5°C19.0°C | 19.0°C | 305 | 15.8 | 14.314 h |
| July | 29.7°C23.2°C | 23.2°C | 286 | 17.5 | 14.114 h |
| August, selected | 31.1°C24.0°C | 24.0°C | 171 | 15.1 | 13.413 h |
| September | 27.4°C20.2°C | 20.2°C | 179 | 12.8 | 12.412 h |
| October | 22.3°C14.4°C | 14.4°C | 101 | 8.0 | 11.411 h |
| November | 16.6°C8.8°C | 8.8°C | 86 | 8.6 | 10.510 h |
| December | 10.9°C3.9°C | 3.9°C | 69 | 9.3 | 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
August in nearby cities
- Fukuoka in AugustJapan · 9 kmHigh 30.7°C · Low 24.6°C · 171 mm rain
- Tosu in AugustJapan · 18 kmHigh 30.8°C · Low 23.6°C · 175 mm rain
- Kurume in AugustJapan · 24 kmHigh 30.8°C · Low 23.5°C · 175 mm rain
- Iizuka in AugustJapan · 24 kmHigh 31.3°C · Low 24.1°C · 142 mm rain
- Maebaru-chūō in AugustJapan · 24 kmHigh 29.7°C · Low 25.1°C · 163 mm rain
- Itoshima in AugustJapan · 26 kmHigh 30.0°C · Low 25.1°C · 163 mm rain
- Munakata in AugustJapan · 31 kmHigh 31.0°C · Low 24.7°C · 155 mm rain
- Saga in AugustJapan · 36 kmHigh 30.4°C · Low 23.9°C · 181 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 Kasuga) is explained once on the Kasuga year overview and on the Sources, method and limits page.
Fukuoka lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.