Climate averages 1991–2020
Kōka weather
in August.
A hot, wet month: the warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Kōka: daytime highs average 30.2°C and nights cool to about 22.8°C. By daytime temperature it is the warmest month of the year.
Expect about 148 mm of rain on roughly 15 days, which makes August a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 28 min on an average August day.
The nearest other city in this atlas is Youkaichi (16 km away). In August its highs average 30.1°C, about as warm as Kōka, with 148 mm of rain.
Among the 303 cities listed in Japan, Kōka ranks joint 78th of 303 for the warmest August highs and joint 157th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Kōka is 1.0°C warmer than that mean.
From August to September, average highs fall by 3.9°C to 26.3°C, and monthly rainfall rises from 148 mm to 202 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
Kōka climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.0°C-0.4°C | -0.4°C | 62 | 7.5 | 10.110 h |
| February | 8.0°C-0.2°C | -0.2°C | 69 | 8.7 | 10.911 h |
| March | 11.9°C2.4°C | 2.4°C | 116 | 12.1 | 11.912 h |
| April | 17.3°C7.4°C | 7.4°C | 133 | 11.4 | 13.013 h |
| May | 22.0°C12.7°C | 12.7°C | 156 | 11.5 | 14.014 h |
| June | 25.4°C17.4°C | 17.4°C | 203 | 14.8 | 14.514 h |
| July | 29.0°C21.9°C | 21.9°C | 214 | 17.7 | 14.314 h |
| August, selected | 30.2°C22.8°C | 22.8°C | 148 | 14.9 | 13.513 h |
| September | 26.3°C19.2°C | 19.2°C | 202 | 13.9 | 12.412 h |
| October | 20.6°C13.0°C | 13.0°C | 177 | 10.6 | 11.311 h |
| November | 15.1°C7.1°C | 7.1°C | 84 | 7.4 | 10.410 h |
| December | 9.5°C1.9°C | 1.9°C | 60 | 7.1 | 9.910 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
- Youkaichi in AugustJapan · 16 kmHigh 30.1°C · Low 22.9°C · 148 mm rain
- Ōmihachiman in AugustJapan · 17 kmHigh 30.2°C · Low 22.8°C · 122 mm rain
- Kusatsu in AugustJapan · 18 kmHigh 30.8°C · Low 23.1°C · 103 mm rain
- Moriyama in AugustJapan · 19 kmHigh 30.5°C · Low 23.0°C · 103 mm rain
- Iga in AugustJapan · 25 kmHigh 30.8°C · Low 23.2°C · 174 mm rain
- Ōtsu in AugustJapan · 27 kmHigh 30.5°C · Low 22.7°C · 140 mm rain
- Hikone in AugustJapan · 31 kmHigh 29.7°C · Low 23.1°C · 163 mm rain
- Uji in AugustJapan · 34 kmHigh 31.0°C · Low 23.3°C · 140 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 Kōka) is explained once on the Kōka year overview and on the Sources, method and limits page.
Youkaichi lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.