Weather in Hefei

On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are May, September, and October. Hefei is in China at 31.9°N. The 2001–2020 NASA POWER daily record describes a continental climate with a wide temperature swing.

July is the warmest month (average 28.5°C, high 32.3°C) and January is the coolest (average 2.7°C, low -2.2°C). Rain is wet season runs from April to August, inside an annual total of 1153 mm. The wettest month is July at 227 mm; the driest is December at 38 mm.

When the score favours a visit

The three months with the highest comfort score are May, September, and October: May (21.9°C average, 97 mm, 70% humidity); September (23.5°C average, 89 mm, 77% humidity); October (17.9°C average, 52 mm, 72% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the wet season itself — fewer crowds, greener landscape, heavier rain — aim at April–August instead of the score.

How warm Hefei gets

Monthly average highs run from 7.6°C in January to 32.3°C in July. Nights follow the same curve: -2.2°C in January and 24.6°C in July.

Across the year the mean afternoon high is 21.5°C. If you want the smallest day–night shock, look at months where the high and low sit close together; July nights still hold 24.6°C.

Rainfall pattern

The wet season in Hefei starts in April and ends in August (April, May, June, July, and August). July is the core of it at 227 mm. December is the other extreme, with 38 mm.

Humidity peaks near 81%. That usually lines up with the wetter months rather than the hottest ones.

What stands out month by month

The year bottoms out in January. Plan for -2.2°C at night and 7.6°C in the afternoon. February stands apart from the months beside it: 10.6°C / 0.2°C and 59 mm. March brings 71 mm and 8 rainy days; temperatures run from 4.3°C to 16.2°C. April is when the wet season typically starts in Hefei: highs near 22.4°C, and rainfall jumps to 90 mm (10 rainy days). May: 27.7°C high, 16.0°C low, 97 mm rain, 70% humidity. June stands apart from the months beside it: 31.1°C / 20.9°C and 165 mm.

July is both the hottest and wettest month: highs around 32.3°C, 227 mm of rain, and 81% humidity. August closes the wet season: 158 mm over 16 rainy days, then the calendar dries. September: 28.3°C high, 18.7°C low, 89 mm rain, 77% humidity. October brings 52 mm and 7 rainy days; temperatures run from 12.4°C to 23.5°C. November stands apart from the months beside it: 16.8°C / 5.7°C and 59 mm. December is the driest month, averaging only 38 mm across 6 rainy days. Highs sit near 9.5°C.

Hefei and other cities in China

Nanjing is about 143 km away: Hefei is about as warm as Nanjing at the hot peak and 43 mm drier over the year than Nanjing. Nanjing’s wettest month is July (243 mm) versus July here.

Wuhan is about 320 km away: Hefei is 0.6°C cooler than Wuhan in its hottest month and 179 mm drier over the year than Wuhan. Wuhan’s wettest month is July (222 mm) versus July here.

Hangzhou is about 325 km away: Hefei is about as warm as Hangzhou at the hot peak and 273 mm drier over the year than Hangzhou. Hangzhou’s wettest month is June (230 mm) versus July here.