Climate averages 1991–2020
Aizu-Wakamatsu weather
in August.
A warm, wet month: the warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Aizu-Wakamatsu: daytime highs average 27.8°C and nights cool to about 20.6°C. By daytime temperature it is the warmest month of the year.
Expect about 132 mm of rain on roughly 14 days, which makes August a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 36 min on an average August day.
The nearest other city in this atlas is Kōriyama (40 km away). In August its highs average 27.8°C, about as warm as Aizu-Wakamatsu, with 130 mm of rain.
Among the 303 cities listed in Japan, Aizu-Wakamatsu ranks joint 252nd of 303 for the warmest August highs and joint 104th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Aizu-Wakamatsu is 1.4°C cooler than that mean.
From August to September, average highs fall by 4.3°C to 23.5°C, and monthly rainfall rises from 132 mm to 144 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
Aizu-Wakamatsu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.0°C-3.6°C | -3.6°C | 99 | 18.9 | 9.910 h |
| February | 3.0°C-3.6°C | -3.6°C | 74 | 15.5 | 10.811 h |
| March | 6.6°C-1.1°C | -1.1°C | 101 | 15.5 | 11.912 h |
| April | 14.0°C3.8°C | 3.8°C | 95 | 12.8 | 13.113 h |
| May | 20.0°C9.8°C | 9.8°C | 95 | 11.8 | 14.214 h |
| June | 23.4°C14.9°C | 14.9°C | 117 | 12.5 | 14.715 h |
| July | 26.6°C19.3°C | 19.3°C | 180 | 17.0 | 14.514 h |
| August, selected | 27.8°C20.6°C | 20.6°C | 132 | 13.9 | 13.614 h |
| September | 23.5°C16.9°C | 16.9°C | 144 | 13.0 | 12.512 h |
| October | 17.6°C10.5°C | 10.5°C | 125 | 11.7 | 11.311 h |
| November | 11.6°C4.4°C | 4.4°C | 82 | 13.2 | 10.210 h |
| December | 5.2°C-0.8°C | -0.8°C | 93 | 18.1 | 9.610 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
- Kōriyama in AugustJapan · 40 kmHigh 27.8°C · Low 20.6°C · 130 mm rain
- Sukagawa in AugustJapan · 45 kmHigh 27.8°C · Low 20.5°C · 141 mm rain
- Yonezawa in AugustJapan · 49 kmHigh 27.7°C · Low 20.6°C · 183 mm rain
- Fukushima in AugustJapan · 54 kmHigh 27.9°C · Low 20.7°C · 163 mm rain
- Nasushiobara in AugustJapan · 58 kmHigh 27.8°C · Low 20.6°C · 190 mm rain
- Ōtawara in AugustJapan · 70 kmHigh 27.9°C · Low 20.7°C · 162 mm rain
- Shibata in AugustJapan · 74 kmHigh 28.6°C · Low 21.7°C · 194 mm rain
- Nikkō in AugustJapan · 87 kmHigh 26.4°C · Low 19.8°C · 259 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 Aizu-Wakamatsu) is explained once on the Aizu-Wakamatsu year overview and on the Sources, method and limits page.