The main characteristics of weather and climate in China during the flood season in 2025

Based on meteorological observation data provided by the National Meteorological Information Center of the China Meteorological Administration, a comprehensive analysis was conducted on the weather and climate characteristics across China during the 2025 flood season (March 15 to November 11). The results indicate that China experienced a warm and wet climate during this period. The national average precipitation was above normal, while the mean temperature ranked as the second highest on record, accompanied by a record-breaking number of high-temperature days. Precipitation during the rainy season in North China and the autumn rain of West China was significantly above normal, triggering severe rainstorm and flood disasters across multiple regions. High-temperature events were prolonged, with an extensive "autumn tiger" heatwave affecting Jiangnan and northern South China. The number of drought days was generally higher than normal, exhibiting distinct periodicity and regional patterns. The first typhoon of the year formed later than usual but made landfall earlier, while autumn typhoons repeatedly affected South China.