Climate Insights for Jian’ou

The climate in Jian’ou is warm and mild. The average annual temperature is 20°C and approximately 1682mm of precipitation falls per year. Jian’ou receives a notable amount of rainfall throughout the year, including during its driest month. Jian’ou is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are January, December, February, when temperatures can drop to 6°C.

Temperatures in Jian’ou vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 35°C and the mean temperature sits around 30°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 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 6°C shift in average temperatures.

Jian’ou is a fairly wet location, receiving approximately 1682mm of precipitation annually, which averages out to around 140mm per month. The wettest month is June, averaging 339mm of rainfall. May and April also tend to see above-average precipitation. The driest month is December, with just 33mm. That's 306mm less than June, 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.

Jian’ou is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Jian’ou, which began on June 21, 2026. Jian’ou 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 35°C, while the coldest stretch bottoms out in January near 6°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

The best time to visit Jian’ou is during October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 70mm per month. By contrast, July can be uncomfortably hot with highs reaching 35°C, while January is the coldest period with lows dropping to 6°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 Jian’ou 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.