Nanjing weather in May
In May, Nanjing has an average high of 27 °C81 °F and an average low of 16 °C60 °F, with about 87 mm3.4 in of precipitation. It is the 5th warmest month of the year and ranks 6th for precipitation.
How May compares with other months
Compared with April, May is 5.7 °C10.2 °F warmer on average and drier by 8 mm0.3 in. Compared with June, May is 4 °C7.1 °F cooler on average and drier by 94 mm3.7 in. Daylight lasts about 13.8 hours around the middle of the month. Average relative humidity is 71% and the average cloud amount 70%.
Is May a good time to visit Nanjing?
Yes — May is one of the most comfortable months to visit Nanjing 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 Nanjing in May, pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
May in nearby places
Other months in Nanjing
- January7 °C44 °F / −3 °C27 °F
- February10 °C50 °F / 0 °C31 °F
- March16 °C60 °F / 4 °C39 °F
- April22 °C72 °F / 10 °C50 °F
- May27 °C81 °F / 16 °C60 °F
- June31 °C87 °F / 20 °C69 °F
- July32 °C90 °F / 25 °C76 °F
- August32 °C89 °F / 24 °C75 °F
- September28 °C83 °F / 19 °C66 °F
- October23 °C74 °F / 12 °C54 °F
- November17 °C62 °F / 6 °C42 °F
- December9 °C48 °F / −1 °C30 °F
Frequently asked questions
How warm is Nanjing in May?
In May the average high in Nanjing is 27 °C (81 °F) and the average low is 16 °C (60 °F).
Does it rain a lot in Nanjing in May?
On average about 87 mm (3.4 in) of precipitation falls in May; it ranks 6th of the 12 months.
Is May the warmest month in Nanjing?
No. The warmest month in Nanjing 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 Nanjing in May?
In the middle of May the day in Nanjing 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 Nanjing in May?
The average relative humidity in May is about 71%. Combined with warm days, it can feel muggy.
How cloudy is Nanjing in May?
On average about 70% 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.