Climate averages 1991–2020
Kochi weather
in August.
A hot, very 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 Kochi: daytime highs average 29.6°C and nights cool to about 23.6°C. By daytime temperature it is the warmest month of the year.
Expect about 297 mm of rain on roughly 21 days, which makes August a very 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 Shikokuchūō (47 km away). In August its highs average 30.7°C, 1.2°C warmer than Kochi, with 182 mm of rain.
Among the 303 cities listed in Japan, Kochi ranks joint 147th of 303 for the warmest August highs and 303rd of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Kochi is 0.4°C warmer than that mean.
From August to September, average highs fall by 2.7°C to 26.8°C, and monthly rainfall rises from 297 mm to 323 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
Kochi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.5°C2.1°C | 2.1°C | 72 | 6.3 | 10.210 h |
| February | 10.7°C2.3°C | 2.3°C | 100 | 8.1 | 11.011 h |
| March | 14.2°C4.8°C | 4.8°C | 164 | 11.5 | 12.012 h |
| April | 18.8°C9.2°C | 9.2°C | 203 | 11.6 | 13.013 h |
| May | 22.8°C14.1°C | 14.1°C | 242 | 13.2 | 13.914 h |
| June | 25.4°C18.7°C | 18.7°C | 358 | 19.1 | 14.314 h |
| July | 28.9°C22.9°C | 22.9°C | 374 | 21.6 | 14.114 h |
| August, selected | 29.6°C23.6°C | 23.6°C | 297 | 20.6 | 13.413 h |
| September | 26.8°C20.6°C | 20.6°C | 323 | 17.1 | 12.412 h |
| October | 22.2°C14.9°C | 14.9°C | 230 | 11.2 | 11.411 h |
| November | 17.0°C9.1°C | 9.1°C | 118 | 8.4 | 10.510 h |
| December | 11.7°C4.2°C | 4.2°C | 90 | 6.3 | 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
- Shikokuchūō in AugustJapan · 47 kmHigh 30.7°C · Low 24.6°C · 182 mm rain
- Shinagawa in AugustJapan · 50 kmHigh 29.7°C · Low 23.3°C · 194 mm rain
- Niihama in AugustJapan · 50 kmHigh 30.6°C · Low 24.8°C · 151 mm rain
- Saijō in AugustJapan · 52 kmHigh 31.3°C · Low 25.2°C · 151 mm rain
- Imabari in AugustJapan · 76 kmHigh 29.7°C · Low 25.0°C · 142 mm rain
- Matsuyama in AugustJapan · 78 kmHigh 30.7°C · Low 24.9°C · 156 mm rain
- Marugame in AugustJapan · 85 kmHigh 29.4°C · Low 24.5°C · 106 mm rain
- Uwajima in AugustJapan · 97 kmHigh 30.7°C · Low 24.9°C · 137 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 Kochi) is explained once on the Kochi year overview and on the Sources, method and limits page.