Climate Insights for Nanjian

The climate in Nanjian is temperate. The average annual temperature is 17°C and approximately 1140mm of precipitation falls per year. July is the wettest month, receiving around 259mm of rainfall. Nanjian is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, May, August. The coldest months are January, December, February, when temperatures can drop to 3°C.

Temperatures in Nanjian vary considerably across the year, with a 24°C difference between the coldest and warmest months. The warmest month is June, when average highs reach 27°C and the mean temperature sits around 22°C. January is the coolest month, with minimum temperatures around 3°C and an average of 9°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.

Nanjian is a moderately rainy area, receiving approximately 1140mm of precipitation annually, which averages out to around 95mm per month. The wettest month is July, averaging 259mm of rainfall. August and September also tend to see above-average precipitation. The driest month is December, with just 22mm. That's 237mm less than July, 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.

Nanjian is relatively calm, with an average annual wind speed of 2km/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 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 2km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently summer in Nanjian, which began on June 21, 2026. Nanjian 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 June at around 27°C, while the coldest stretch bottoms out in January near 3°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Nanjian is during March, April, May and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 62mm per month. By contrast, June can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to 3°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 Nanjian 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.