Climate Overview
The climate in Aizu-Wakamatsu is temperate. The average annual temperature is 12°C and approximately 1392mm of precipitation falls per year. Aizu-Wakamatsu receives a notable amount of rainfall throughout the year, including during its driest month. Aizu-Wakamatsu is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to -4°C. Aizu-Wakamatsu experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Aizu-Wakamatsu vary considerably across the year, with a 33°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 25°C. The coldest month is January, when overnight lows fall to -4°C and the daily average is -1°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.
Precipitation
Aizu-Wakamatsu is a fairly wet location, receiving approximately 1392mm of precipitation annually, which averages out to around 116mm per month. The wettest month is July, averaging 164mm of rainfall. August and September also tend to see above-average precipitation. The driest month is November, with just 79mm. That's 85mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Aizu-Wakamatsu receives heavy snowfall, accumulating around 253cm annually from January through December. The snowiest month is January, with approximately 81cm. Winter travel should account for significant snow cover.
Wind
Aizu-Wakamatsu is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 10km/h in winter, 9km/h in spring, 6km/h in summer, 7km/h in autumn.
Seasons
3 days until Autumn
It is currently summer in Aizu-Wakamatsu, which began on June 21, 2026. Aizu-Wakamatsu is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 29°C, while the coldest stretch bottoms out in January near -4°C. Autumn is next, beginning on September 23, 2026 (3 days from now).
Spring
Temperatures range from 0 to 20°C. Rainfall is heavy, totalling around 306mm across the season with a monthly average of 102mm. Winds are generally light, averaging 9km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 29°C. Rainfall is heavy, totalling around 443mm across the season with a monthly average of 148mm. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 4 to 24°C. Rainfall is heavy, totalling around 345mm across the season with a monthly average of 115mm. Expect around 6cm of snow accumulation during this period. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -4 to 5°C. Precipitation is moderate at around 299mm for the season, averaging 100mm per month. Expect around 203cm of snow accumulation during this period. Winds are generally light, averaging 10km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Aizu-Wakamatsu based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
