Climate averages 1991–2020
Yonezawa weather
in August.
A warm, very 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 Yonezawa: daytime highs average 27.7°C and nights cool to about 20.6°C. By daytime temperature it is the warmest month of the year.
Expect about 183 mm of rain on roughly 17 days, which makes August a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 38 min on an average August day.
The nearest other city in this atlas is Fukushima (36 km away). In August its highs average 27.9°C, about as warm as Yonezawa, with 163 mm of rain.
Among the 303 cities listed in Japan, Yonezawa ranks joint 259th of 303 for the warmest August highs and joint 262nd of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Yonezawa is 1.4°C cooler than that mean.
From August to September, average highs fall by 4.2°C to 23.6°C, and monthly rainfall falls from 183 mm to 155 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
Yonezawa climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.7°C-4.6°C | -4.6°C | 190 | 24.5 | 9.910 h |
| February | 2.7°C-4.4°C | -4.4°C | 138 | 20.7 | 10.811 h |
| March | 6.2°C-1.8°C | -1.8°C | 146 | 19.4 | 11.912 h |
| April | 13.1°C3.2°C | 3.2°C | 115 | 15.1 | 13.213 h |
| May | 20.0°C9.8°C | 9.8°C | 116 | 14.2 | 14.214 h |
| June | 23.4°C15.0°C | 15.0°C | 155 | 15.2 | 14.715 h |
| July | 26.6°C19.4°C | 19.4°C | 241 | 19.9 | 14.515 h |
| August, selected | 27.7°C20.6°C | 20.6°C | 183 | 17.4 | 13.614 h |
| September | 23.6°C16.7°C | 16.7°C | 155 | 15.3 | 12.512 h |
| October | 17.6°C10.1°C | 10.1°C | 139 | 14.3 | 11.211 h |
| November | 11.3°C3.7°C | 3.7°C | 133 | 17.5 | 10.210 h |
| December | 4.7°C-1.6°C | -1.6°C | 181 | 23.2 | 9.610 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
- Fukushima in AugustJapan · 36 kmHigh 27.9°C · Low 20.7°C · 163 mm rain
- Yamagata in AugustJapan · 42 kmHigh 26.9°C · Low 19.5°C · 146 mm rain
- Aizu-Wakamatsu in AugustJapan · 49 kmHigh 27.8°C · Low 20.6°C · 132 mm rain
- Kōriyama in AugustJapan · 61 kmHigh 27.8°C · Low 20.6°C · 130 mm rain
- Shibata in AugustJapan · 69 kmHigh 28.6°C · Low 21.7°C · 194 mm rain
- Natori-shi in AugustJapan · 73 kmHigh 26.0°C · Low 21.4°C · 162 mm rain
- Sukagawa in AugustJapan · 74 kmHigh 27.8°C · Low 20.5°C · 141 mm rain
- Sendai in AugustJapan · 77 kmHigh 26.2°C · Low 21.0°C · 169 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 Yonezawa) is explained once on the Yonezawa year overview and on the Sources, method and limits page.