In 2023, the city’s annual average precipitation was 1,186.17 mm, 12.7% below the long-term average but 15% higher than the previous year. Precipitation across counties (cities, districts) ranged from 1,014.2 mm (Hengyang urban area) to 1,311.3 mm (Leiyang City). Compared to the long-term averages, precipitation anomalies ranged from -305.6 mm (Hengyang urban area) to -66.8 mm (Qidong), with percentage anomalies of -23.2% (Hengyang urban area) to -5.3% (Qidong), reflecting a pattern of higher precipitation in the central-north and lower in the south. Nanyue Mountain recorded 1,678.9 mm of precipitation, 345.1 mm (17.1%) below its long-term average.

The city’s annual average number of rainy days was 136.9, 20.5 days fewer than the long-term average but 1.1 days more than 2022. Rainy days in each county (city, district) ranged from 128 (Hengnan) to 150 (Changning), with deviation values of - 32.8 (Hengnan) to - 15.4 (Changning) compared to the same period. Nanyue Mountain had 194 rainy days, 3.9 above its long-term average.