Climate Overview
The climate in Nishimonai is temperate. The average annual temperature is 11°C and approximately 1789mm of precipitation falls per year. Nishimonai receives a notable amount of rainfall throughout the year, including during its driest month. Nishimonai 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. Nishimonai experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Nishimonai vary considerably across the year, with a 32°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 24°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
Nishimonai is a fairly wet location, receiving approximately 1789mm of precipitation annually, which averages out to around 149mm per month. The wettest month is August, averaging 205mm of rainfall. July and June also tend to see above-average precipitation. The driest month is February, with just 113mm. That's 92mm 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. Nishimonai receives heavy snowfall, accumulating around 340cm annually from January through December. The snowiest month is January, with approximately 104cm. Winter travel should account for significant snow cover.
Wind
Nishimonai is relatively calm, with an average annual wind speed of 9km/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 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/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, 10km/h in spring, 7km/h in summer, 8km/h in autumn.
Seasons
3 days until Autumn
It is currently summer in Nishimonai, which began on June 21, 2026. Nishimonai 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 28°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 391mm across the season with a monthly average of 130mm. Winds are generally light, averaging 10km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 16 to 28°C. Rainfall is heavy, totalling around 556mm across the season with a monthly average of 185mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 4 to 24°C. Rainfall is heavy, totalling around 434mm across the season with a monthly average of 145mm. Expect around 17cm of snow accumulation during this period. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -4 to 4°C. Rainfall is heavy, totalling around 407mm across the season with a monthly average of 136mm. Expect around 270cm 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 Nishimonai 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.
