Climate averages 1991–2020
Matsumoto weather
in August.
A hot, wet month: the warmest and the joint 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Matsumoto: daytime highs average 28.3°C and nights cool to about 20.0°C. By daytime temperature it is the warmest month of the year.
Expect about 155 mm of rain on roughly 15 days, which makes August a wet month (the joint 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 32 min on an average August day.
The nearest other city in this atlas is Azumino (9 km away). In August its highs average 28.3°C, about as warm as Matsumoto, with 155 mm of rain.
Among the 303 cities listed in Japan, Matsumoto ranks joint 230th of 303 for the warmest August highs and joint 170th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Matsumoto is 0.9°C cooler than that mean.
From August to September, average highs fall by 4.0°C to 24.3°C, and monthly rainfall rises from 155 mm to 199 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
Matsumoto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.2°C-6.5°C | -6.5°C | 106 | 15.3 | 10.010 h |
| February | 3.5°C-5.7°C | -5.7°C | 100 | 12.6 | 10.811 h |
| March | 7.7°C-1.6°C | -1.6°C | 155 | 15.0 | 11.912 h |
| April | 14.6°C3.6°C | 3.6°C | 138 | 13.6 | 13.113 h |
| May | 20.7°C9.8°C | 9.8°C | 156 | 14.2 | 14.114 h |
| June | 23.8°C15.0°C | 15.0°C | 224 | 18.2 | 14.615 h |
| July | 27.1°C19.0°C | 19.0°C | 246 | 19.3 | 14.414 h |
| August, selected | 28.3°C20.0°C | 20.0°C | 155 | 15.0 | 13.514 h |
| September | 24.3°C16.2°C | 16.2°C | 199 | 15.8 | 12.412 h |
| October | 18.5°C9.6°C | 9.6°C | 193 | 15.3 | 11.311 h |
| November | 12.5°C2.7°C | 2.7°C | 115 | 13.3 | 10.310 h |
| December | 5.7°C-3.4°C | -3.4°C | 107 | 15.5 | 9.710 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
- Azumino in AugustJapan · 9 kmHigh 28.3°C · Low 20.3°C · 155 mm rain
- Ueda in AugustJapan · 34 kmHigh 28.7°C · Low 20.2°C · 134 mm rain
- Saku in AugustJapan · 46 kmHigh 27.8°C · Low 20.2°C · 174 mm rain
- Nagano in AugustJapan · 50 kmHigh 28.1°C · Low 19.9°C · 169 mm rain
- Takayama in AugustJapan · 65 kmHigh 26.8°C · Low 19.1°C · 179 mm rain
- Kai in AugustJapan · 78 kmHigh 29.1°C · Low 21.5°C · 139 mm rain
- Iida in AugustJapan · 80 kmHigh 28.8°C · Low 20.9°C · 184 mm rain
- Minami-Alps in AugustJapan · 82 kmHigh 29.0°C · Low 21.5°C · 192 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 Matsumoto) is explained once on the Matsumoto year overview and on the Sources, method and limits page.
Azumino lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.