Climate Insights for Seisui

The climate in Seisui is warm and mild. The average annual temperature is 22°C and approximately 2027mm 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 14°C.

Seisui sees moderate temperature variation throughout the year, ranging from 14°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 14°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.

Seisui is a very wet location, receiving approximately 2027mm of precipitation annually, which averages out to around 169mm per month. The wettest month is June, averaging 411mm of rainfall. May and July also tend to see above-average precipitation. The driest month is January, with just 99mm. That's 311mm 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.

Seisui is moderately windy, with an average annual wind speed of 24km/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 27km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 22km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h 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 27km/h in winter, 24km/h in spring, 23km/h in summer, 24km/h in autumn.

It is currently spring in Seisui, which began on March 20, 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 14°C. Summer is next, beginning on June 21, 2026 — 87 days from now.

The best time to visit Seisui is during January, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 99mm per month. By contrast, August can be uncomfortably hot with highs reaching 29°C, while February is the coldest period with lows dropping to 14°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 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.