Climate Insights for Jianshui

The climate in Jianshui is temperate. The average annual temperature is 18°C and approximately 1764mm of precipitation falls per year. Jianshui receives a notable amount of rainfall throughout the year, including during its driest month. Jianshui is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, June, August. The coldest months are January, February, December, when temperatures can drop to 6°C.

Temperatures in Jianshui vary considerably across the year, with a 21°C difference between the coldest and warmest months. The warmest month is May, when average highs reach 27°C and the mean temperature sits around 21°C. January is the coolest month, with minimum temperatures around 6°C and an average of 11°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 4°C shift in average temperatures.

Jianshui is a fairly wet location, receiving approximately 1764mm of precipitation annually, which averages out to around 147mm per month. The wettest month is August, averaging 355mm of rainfall. July and June also tend to see above-average precipitation. The driest month is February, with just 37mm. That's 318mm less than August, 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.

Jianshui is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 8km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 10km/h in winter, 13km/h in spring, 7km/h in summer, 7km/h in autumn.

It is currently spring in Jianshui, which began on March 20, 2026. Jianshui 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 May at around 27°C, while the coldest stretch bottoms out in January near 6°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Jianshui is during March and April, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 50mm per month. By contrast, May can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to 6°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 Jianshui 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.