Climate averages 1991–2020
Aizu-Wakamatsu weather
in May.
A mild, wet month: the 5th warmest and the joint 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Aizu-Wakamatsu: daytime highs average 20.0°C and nights cool to about 9.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 95 mm of rain on roughly 12 days, which makes May a wet month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 10 min on an average May day.
The nearest other city in this atlas is Kōriyama (40 km away). In May its highs average 20.1°C, about as warm as Aizu-Wakamatsu, with 97 mm of rain.
Among the 303 cities listed in Japan, Aizu-Wakamatsu ranks joint 256th of 303 for the warmest May highs and joint 13th of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Aizu-Wakamatsu is 1.3°C cooler than that mean.
From May to June, average highs rise by 3.4°C to 23.4°C, and monthly rainfall rises from 95 mm to 117 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Kōriyama in MayJapan · 40 kmHigh 20.1°C · Low 10.1°C · 97 mm rain
- Sukagawa in MayJapan · 45 kmHigh 20.1°C · Low 10.1°C · 115 mm rain
- Yonezawa in MayJapan · 49 kmHigh 20.0°C · Low 9.8°C · 116 mm rain
- Fukushima in MayJapan · 54 kmHigh 20.6°C · Low 10.0°C · 106 mm rain
- Nasushiobara in MayJapan · 58 kmHigh 20.3°C · Low 10.3°C · 148 mm rain
- Ōtawara in MayJapan · 70 kmHigh 20.6°C · Low 10.3°C · 142 mm rain
- Shibata in MayJapan · 74 kmHigh 20.3°C · Low 10.5°C · 123 mm rain
- Nikkō in MayJapan · 87 kmHigh 19.1°C · Low 9.4°C · 176 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.