Climate Overview
The climate in Hayakawa is temperate. The average annual temperature is 12°C and approximately 3077mm of precipitation falls per year. Hayakawa receives a notable amount of rainfall throughout the year, including during its driest month. Hayakawa 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 -1°C. Snowfall occurs from January to December, with around 100cm accumulating over the season.
Temperature
Temperatures in Hayakawa vary considerably across the year, with a 29°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 -1°C and the daily average is 2°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.
Precipitation
Hayakawa is a very wet location, receiving approximately 3077mm of precipitation annually, which averages out to around 256mm per month. The wettest month is July, averaging 492mm of rainfall. September and October also tend to see above-average precipitation. The driest month is January, with just 101mm. That's 392mm less than July, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 100cm accumulating over the season. March typically sees the most snow at around 34cm.
Wind
Hayakawa is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
90 days until Autumn
It is currently summer in Hayakawa, which began on June 21, 2026. Hayakawa 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 -1°C. Autumn is next, beginning on September 23, 2026 — 90 days from now.
Spring
Temperatures range from 2 to 20°C. Rainfall is heavy, totalling around 718mm across the season with a monthly average of 239mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 28°C. Rainfall is heavy, totalling around 1134mm across the season with a monthly average of 378mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 6 to 24°C. Rainfall is heavy, totalling around 883mm across the season with a monthly average of 294mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -1 to 8°C. Rainfall is heavy, totalling around 342mm across the season with a monthly average of 114mm. Expect around 57cm of snow accumulation during this period. Winds are generally light, averaging 2km/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 Hayakawa 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.