Climate Overview
The climate in Seisui is warm and mild. The average annual temperature is 22°C and approximately 2125mm of precipitation falls per year. Seisui receives a notable amount of rainfall throughout the year, including during its driest month. Seisui 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 February, January, March, when temperatures can drop to 15°C.
Temperature
Seisui sees moderate temperature variation throughout the year, ranging from 15°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 28°C. February is the coolest month, with minimum temperatures around 15°C and an average of 16°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 4°C shift in average temperatures.
Precipitation
Seisui is a very wet location, receiving approximately 2125mm of precipitation annually, which averages out to around 177mm per month. The wettest month is June, averaging 449mm of rainfall. September and July also tend to see above-average precipitation. The driest month is February, with just 109mm. That's 339mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Seisui is relatively calm, with an average annual wind speed of 6km/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 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
85 days until Autumn
It is currently summer in Seisui, which began on June 21, 2026. Seisui 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 February near 15°C. Autumn is next, beginning on September 23, 2026 — 85 days from now.
Spring
Temperatures range from 17 to 24°C. Rainfall is heavy, totalling around 503mm across the season with a monthly average of 168mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 788mm across the season with a monthly average of 263mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 21 to 28°C. Rainfall is heavy, totalling around 473mm across the season with a monthly average of 158mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 15 to 19°C. Rainfall is heavy, totalling around 361mm across the season with a monthly average of 120mm. Winds are generally light, averaging 6km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Seisui 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. 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.
