Climate Insights for Akaigawa

The climate in Akaigawa is cool. The average annual temperature is 9°C and approximately 1365mm of precipitation falls per year. Akaigawa receives a notable amount of rainfall throughout the year, including during its driest month. Akaigawa 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 -5°C. Akaigawa experiences heavy snowfall, typically from January through December.

Temperatures in Akaigawa vary considerably across the year, with a 29°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 24°C with a mean of 22°C. The coldest month is January, when overnight lows fall to -5°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.

Akaigawa is a fairly wet location, receiving approximately 1365mm of precipitation annually, which averages out to around 114mm per month. The wettest month is August, averaging 166mm of rainfall. November and December also tend to see above-average precipitation. The driest month is April, with just 69mm. That's 97mm less than August, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Akaigawa receives heavy snowfall, accumulating around 325cm annually from January through December. The snowiest month is December, with approximately 90cm. Winter travel should account for significant snow cover.

Akaigawa is moderately windy, with an average annual wind speed of 21km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 27km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 13km/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 26km/h in winter, 20km/h in spring, 15km/h in summer, 22km/h in autumn.

It is currently spring in Akaigawa, which began on March 20, 2026. Akaigawa 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 24°C, while the coldest stretch bottoms out in January near -5°C. Summer is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Akaigawa is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 90mm per month. By contrast, August can be uncomfortably hot with highs reaching 24°C, while January is the coldest period with lows dropping to -5°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Akaigawa 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.