Climate Insights for Hengchun

The climate in Hengchun is hot. The average annual temperature is 25°C and approximately 2648mm of precipitation falls per year. September is the wettest month, receiving around 616mm of rainfall. Hengchun is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are February, January, March, when temperatures can drop to 20°C.

Hengchun has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 20°C and an average of 21°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows. The sharpest temperature change occurs between March and April, with a 4°C shift in average temperatures.

Hengchun is a very wet location, receiving approximately 2648mm of precipitation annually, which averages out to around 221mm per month. The wettest month is September, averaging 616mm of rainfall. August and October also tend to see above-average precipitation. The driest month is December, with just 22mm. That's 594mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Hengchun is relatively calm, with an average annual wind speed of 7km/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 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 5km/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 8km/h in winter, 6km/h in spring, 6km/h in summer, 7km/h in autumn.

It is currently summer in Hengchun, which began on June 21, 2026. Hengchun 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 29°C, while the coldest stretch bottoms out in February near 20°C. Autumn is next, beginning on September 23, 2026 — 63 days from now.

The best time to visit Hengchun is during February, March and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 42mm per month. By contrast, July can be uncomfortably hot with temperatures reaching 29°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Hengchun 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.