Climate averages 1991–2020
Hakodate weather
in August.
A warm, very wet month: the warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Hakodate: daytime highs average 23.7°C and nights cool to about 19.7°C. By daytime temperature it is the warmest month of the year.
Expect about 206 mm of rain on roughly 15 days, which makes August a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 52 min on an average August day.
The nearest other city in this atlas is Muroran (64 km away). In August its highs average 23.0°C, 0.7°C cooler than Hakodate, with 181 mm of rain.
Among the 303 cities listed in Japan, Hakodate ranks joint 296th of 303 for the warmest August highs and 293rd of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Hakodate is 5.5°C cooler than that mean.
From August to September, average highs fall by 2.4°C to 21.3°C, and monthly rainfall falls from 206 mm to 185 mm.
The annual picture
August in context
Monthly precipitation
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
Hakodate climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.5°C-5.0°C | -5.0°C | 52 | 9.2 | 9.510 h |
| February | 0.1°C-5.1°C | -5.1°C | 52 | 8.0 | 10.611 h |
| March | 3.5°C-2.2°C | -2.2°C | 66 | 9.6 | 11.912 h |
| April | 8.9°C2.4°C | 2.4°C | 83 | 9.8 | 13.313 h |
| May | 13.9°C7.7°C | 7.7°C | 119 | 11.6 | 14.515 h |
| June | 17.8°C12.6°C | 12.6°C | 121 | 11.6 | 15.215 h |
| July | 21.6°C17.3°C | 17.3°C | 178 | 14.9 | 14.915 h |
| August, selected | 23.7°C19.7°C | 19.7°C | 206 | 14.8 | 13.914 h |
| September | 21.3°C16.9°C | 16.9°C | 185 | 12.8 | 12.513 h |
| October | 15.3°C10.4°C | 10.4°C | 114 | 11.4 | 11.111 h |
| November | 8.1°C3.3°C | 3.3°C | 87 | 11.0 | 9.910 h |
| December | 2.1°C-2.2°C | -2.2°C | 70 | 10.5 | 9.29 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Muroran in AugustJapan · 64 kmHigh 23.0°C · Low 18.7°C · 181 mm rain
- Aomori in AugustJapan · 107 kmHigh 26.7°C · Low 19.7°C · 169 mm rain
- Tomakomai in AugustJapan · 119 kmHigh 22.5°C · Low 18.2°C · 197 mm rain
- Hirosaki in AugustJapan · 133 kmHigh 26.7°C · Low 19.1°C · 176 mm rain
- Chitose in AugustJapan · 138 kmHigh 23.2°C · Low 17.8°C · 162 mm rain
- Eniwa in AugustJapan · 142 kmHigh 23.6°C · Low 17.4°C · 171 mm rain
- Sapporo in AugustJapan · 152 kmHigh 24.6°C · Low 18.5°C · 191 mm rain
- Hachinohe in AugustJapan · 156 kmHigh 26.3°C · Low 19.6°C · 132 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 Hakodate) is explained once on the Hakodate year overview and on the Sources, method and limits page.