Hefei weather in May
In May, Hefei has an average high of 28 °C82 °F and an average low of 16 °C61 °F, with about 97 mm3.8 in of precipitation. It is the 5th warmest month of the year and ranks 4th for precipitation.
How May compares with other months
Compared with April, May is 5.6 °C10 °F warmer on average and wetter by 7 mm0.3 in. Compared with June, May is 4.1 °C7.3 °F cooler on average and drier by 69 mm2.7 in. Daylight lasts about 13.8 hours around the middle of the month. Average relative humidity is 70% and the average cloud amount 71%.
Is May a good time to visit Hefei?
Yes — May is one of the most comfortable months to visit Hefei by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in May
For Hefei in May, pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
May in nearby places
Other months in Hefei
- January7 °C45 °F / −3 °C27 °F
- February10 °C50 °F / 0 °C32 °F
- March16 °C61 °F / 4 °C40 °F
- April22 °C72 °F / 10 °C50 °F
- May28 °C82 °F / 16 °C61 °F
- June31 °C88 °F / 21 °C70 °F
- July32 °C90 °F / 25 °C76 °F
- August32 °C89 °F / 24 °C75 °F
- September28 °C83 °F / 18 °C65 °F
- October23 °C74 °F / 12 °C54 °F
- November16 °C61 °F / 5 °C42 °F
- December9 °C48 °F / −1 °C30 °F
Frequently asked questions
How warm is Hefei in May?
In May the average high in Hefei is 28 °C (82 °F) and the average low is 16 °C (61 °F).
Does it rain a lot in Hefei in May?
On average about 97 mm (3.8 in) of precipitation falls in May; it ranks 4th of the 12 months.
Is May the warmest month in Hefei?
No. The warmest month in Hefei is July, with an average high of 32 °C (90 °F). The coldest month is January, with an average low of -3 °C (27 °F).
How long is the day in Hefei in May?
In the middle of May the day in Hefei lasts about 13.8 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Hefei in May?
The average relative humidity in May is about 70%. Combined with warm days, it can feel muggy.
How cloudy is Hefei in May?
On average about 71% of the sky is covered by cloud in May. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.