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Aizu-Wakamatsu, Fukushima Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Aizu-Wakamatsu, Fukushima?
Aizu-Wakamatsu, Fukushima gets 1214 mm of precipitation a year over about 160 rainy days. August is the warmest month (average high 31°C) and February the coldest (average low -4°C).
Humid continental climate
Aizu-Wakamatsu, Fukushima has hot summers and cold winters. Daytime highs range from about 3°C in January to 31°C in August. July is usually the wettest month. The most comfortable time to visit is typically April to June and September to October, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -3° | 4° |
| Spring | Mar–May | 4° | 16° |
| Summer | Jun–Aug | 18° | 28° |
| Autumn | Sep–Nov | 9° | 19° |
How much rain does Aizu-Wakamatsu get?
Aizu-Wakamatsu gets 1214 mm of precipitation in an average year, spread over about 160 days with measurable rain. That is more rainy days than 85% of Japan.
July is the wettest month, with 187 mm. April is the driest, with 62 mm. January has the most rainy days, about 19.
The longest dry spell in the last five years lasted 14 days, to July 31, 2025.
From October 2025 to September 2026 Aizu-Wakamatsu got 3816 mm of rain, against a normal of 1214 mm for those months. September 2026 had the most, with 2497 mm.
Aizu-Wakamatsu weather by month
Aizu-Wakamatsu weather in January
In January, Aizu-Wakamatsu averages a high of 3°C and a low of -4°C. It gets 103 mm of precipitation over about 19 rainy days. Estimated sunshine is 19% of daylight hours, derived from ERA5 cloud cover. The January record high is 13°C (1979) and the record low is -14°C (2006).
Aizu-Wakamatsu weather in February
In February, Aizu-Wakamatsu averages a high of 4°C and a low of -4°C. It gets 70 mm of precipitation over about 15 rainy days. Estimated sunshine is 23% of daylight hours, derived from ERA5 cloud cover. The February record high is 17°C (2026) and the record low is -15°C (1976).
Aizu-Wakamatsu weather in March
In March, Aizu-Wakamatsu averages a high of 9°C and a low of -2°C. It gets 74 mm of precipitation over about 15 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The March record high is 23°C (2025) and the record low is -12°C (1984).
Aizu-Wakamatsu weather in April
In April, Aizu-Wakamatsu averages a high of 17°C and a low of 4°C. It gets 62 mm of precipitation over about 11 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The April record high is 31°C (1998) and the record low is -4°C (1970). April is one of the most comfortable months to visit.
Aizu-Wakamatsu weather in May
In May, Aizu-Wakamatsu averages a high of 23°C and a low of 9°C. It gets 73 mm of precipitation over about 10 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The May record high is 36°C (2019) and the record low is 1°C (1974). May is one of the most comfortable months to visit.
Aizu-Wakamatsu weather in June
In June, Aizu-Wakamatsu averages a high of 26°C and a low of 16°C. It gets 103 mm of precipitation over about 11 rainy days. Estimated sunshine is 24% of daylight hours, derived from ERA5 cloud cover. The June record high is 36°C (2018) and the record low is 7°C (1977). June is one of the most comfortable months to visit.
Aizu-Wakamatsu weather in July
In July, Aizu-Wakamatsu averages a high of 29°C and a low of 20°C. It gets 187 mm of precipitation over about 14 rainy days. Estimated sunshine is 20% of daylight hours, derived from ERA5 cloud cover. The July record high is 38°C (2025) and the record low is 9°C (1976).
Aizu-Wakamatsu weather in August
In August, Aizu-Wakamatsu averages a high of 31°C and a low of 21°C. It gets 126 mm of precipitation over about 11 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The August record high is 38°C (1994) and the record low is 12°C (1971).
Aizu-Wakamatsu weather in September
In September, Aizu-Wakamatsu averages a high of 26°C and a low of 16°C. It gets 120 mm of precipitation over about 12 rainy days. Estimated sunshine is 20% of daylight hours, derived from ERA5 cloud cover. The September record high is 36°C (2010) and the record low is 5°C (2001). September is one of the most comfortable months to visit.
Aizu-Wakamatsu weather in October
In October, Aizu-Wakamatsu averages a high of 19°C and a low of 9°C. It gets 112 mm of precipitation over about 11 rainy days. Estimated sunshine is 25% of daylight hours, derived from ERA5 cloud cover. The October record high is 31°C (2018) and the record low is -2°C (1983). October is one of the most comfortable months to visit.
Aizu-Wakamatsu weather in November
In November, Aizu-Wakamatsu averages a high of 12°C and a low of 3°C. It gets 77 mm of precipitation over about 14 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The November record high is 24°C (1977) and the record low is -6°C (1983).
Aizu-Wakamatsu weather in December
In December, Aizu-Wakamatsu averages a high of 6°C and a low of -1°C. It gets 107 mm of precipitation over about 18 rainy days. Estimated sunshine is 21% of daylight hours, derived from ERA5 cloud cover. The December record high is 21°C (1990) and the record low is -11°C (2014).
Sunshine, humidity and wind in Aizu-Wakamatsu
April is the sunniest month in Aizu-Wakamatsu, with estimated sunshine of 35% of daylight hours from ERA5 cloud cover. January is the cloudiest, at 19%. The annual cloud-cover estimate is 25% of daylight hours; it is not a measurement of sunshine duration. Aizu-Wakamatsu is cloudier than 99% of Japan.
Humidity peaks in September at 84% and is lowest in April at 66%.
Aizu-Wakamatsu has about 21 days a year above 32°C. Aizu-Wakamatsu is hotter than 55% of Japan.
First and last freeze in Aizu-Wakamatsu
The first fall freeze in Aizu-Wakamatsu typically comes around November 14, and the last spring freeze around April 14. That leaves a frost-free growing season of about 214 days.
Aizu-Wakamatsu weather records
These records cover WAKAMATSU during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Aizu-Wakamatsu station is 38°C, on August 23, 2018. The coldest is -15°C, on February 14, 1976.
The wettest day in the available station history brought 333 mm of precipitation, on September 11, 2026.
44 all-time records have been set at the station since 1970.
The best time to visit Aizu-Wakamatsu
The most comfortable time to visit is typically April to June and September to October, when daytime highs sit near 22°C.
Winter (December–February) is cold, with average highs around 4°C and lows near -3°C.
Spring (March–May) is mild, with average highs around 16°C and lows near 4°C.
Summer (June–August) is hot, with average highs around 29°C and lows near 19°C. It can feel humid.
Autumn (September–November) is mild, with average highs around 19°C and lows near 9°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -4° | 3° | 103 mm | 19 | 82% | 19% | 13° | -14° |
| February | -4° | 4° | 70 mm | 15 | 77% | 23% | 17° | -15° |
| March | -2° | 9° | 74 mm | 15 | 72% | 30% | 23° | -12° |
| April | 4° | 17° | 62 mm | 11 | 66% | 35% | 31° | -4° |
| May | 9° | 23° | 73 mm | 10 | 71% | 30% | 36° | 1° |
| June | 16° | 26° | 103 mm | 11 | 77% | 24% | 36° | 7° |
| July | 20° | 29° | 187 mm | 14 | 83% | 20% | 38° | 9° |
| August | 21° | 31° | 126 mm | 11 | 82% | 26% | 38° | 12° |
| September | 16° | 26° | 120 mm | 12 | 84% | 20% | 36° | 5° |
| October | 9° | 19° | 112 mm | 11 | 82% | 25% | 31° | -2° |
| November | 3° | 12° | 77 mm | 14 | 81% | 30% | 24° | -6° |
| December | -1° | 6° | 107 mm | 18 | 83% | 21% | 21° | -11° |
Station: WAKAMATSU, 3 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Aizu-Wakamatsu climate questions
How much rain does Aizu-Wakamatsu get?
Aizu-Wakamatsu gets 1214 mm of precipitation in an average year, over about 160 rainy days.
What is the wettest month in Aizu-Wakamatsu?
July is the wettest month in Aizu-Wakamatsu, with 187 mm. April is the driest, with 62 mm.
How many rainy days does Aizu-Wakamatsu have a year?
Aizu-Wakamatsu has about 160 days with measurable rain in an average year. January has the most, about 19.
What is the hottest month in Aizu-Wakamatsu?
August is the warmest month in Aizu-Wakamatsu, with an average high of 31°C.
What is the coldest month in Aizu-Wakamatsu?
February is the coldest month in Aizu-Wakamatsu, with an average low of -4°C.
What is the record high temperature in Aizu-Wakamatsu?
Within the available 1970–2026 station history, the record high at the Aizu-Wakamatsu station is 38°C, set on August 23, 2018. The record low is -15°C, on February 14, 1976.
What is the sunniest month in Aizu-Wakamatsu?
April is the sunniest month in Aizu-Wakamatsu, with estimated sunshine of 35% of daylight hours from ERA5 cloud cover. January is the cloudiest.
When is the first frost in Aizu-Wakamatsu?
The first fall freeze in Aizu-Wakamatsu typically comes around November 14. The last spring freeze is around April 14.
What is the best time to visit Aizu-Wakamatsu?
The most comfortable time to visit is typically April to June and September to October, when daytime highs sit near 22°C.