Climate Overview
The climate in Jiufen is warm and mild. The average annual temperature is 23°C and approximately 2346mm of precipitation falls per year. Jiufen receives a notable amount of rainfall throughout the year, including during its driest month. Jiufen is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, March, when temperatures can drop to 14°C.
Temperature
Jiufen sees moderate temperature variation throughout the year, ranging from 14°C to 31°C. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 29°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 3°C between highs and lows. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.
Precipitation
Jiufen is a very wet location, receiving approximately 2346mm of precipitation annually, which averages out to around 195mm per month. The wettest month is October, averaging 312mm of rainfall. September and December also tend to see above-average precipitation. The driest month is July, with just 113mm. That's 199mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Jiufen is relatively calm, with an average annual wind speed of 3km/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 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 3km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
3 days until Summer
It is currently spring in Jiufen, which began on March 20, 2026. Jiufen 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 July at around 31°C, while the coldest stretch bottoms out in February near 14°C. Summer is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 16 to 26°C. Rainfall is heavy, totalling around 443mm across the season with a monthly average of 148mm. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 425mm across the season with a monthly average of 142mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 20 to 28°C. Rainfall is heavy, totalling around 880mm across the season with a monthly average of 293mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 14 to 19°C. Rainfall is heavy, totalling around 599mm across the season with a monthly average of 200mm. Winds are generally light, averaging 4km/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 Jiufen 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.
