Climate Insights for Hongzhou

The climate in Hongzhou is warm and mild. The average annual temperature is 18°C and approximately 2205mm of precipitation falls per year. Hongzhou receives a notable amount of rainfall throughout the year, including during its driest month. Hongzhou 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 January, December, February, when temperatures can drop to 4°C. Light snow can occur between January and December.

Temperatures in Hongzhou vary considerably across the year, with a 28°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 32°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 4°C and an average of 7°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.

Hongzhou is a very wet location, receiving approximately 2205mm of precipitation annually, which averages out to around 184mm per month. The wettest month is June, averaging 347mm of rainfall. May and April also tend to see above-average precipitation. The driest month is December, with just 83mm. That's 264mm 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. Light snowfall can occur between January and December, totalling around 5cm annually. December is the snowiest month with approximately 2cm.

Hongzhou is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 13km/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.

It is currently spring in Hongzhou, which began on March 20, 2026. Hongzhou 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 32°C, while the coldest stretch bottoms out in January near 4°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Hongzhou is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 98mm per month. By contrast, August can be uncomfortably hot with highs reaching 32°C, while January is the coldest period with lows dropping to 4°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 Hongzhou 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.