Guangzhou weather in May
In May, Guangzhou has an average high of 30 °C87 °F and an average low of 23 °C73 °F, with about 298 mm12 in of precipitation. It is the 5th warmest month of the year and ranks 2nd for precipitation.
How May compares with other months
Compared with April, May is 2.7 °C4.9 °F warmer on average and wetter by 146 mm5.8 in. Compared with June, May is 1.3 °C2.3 °F cooler on average and drier by 34 mm1.3 in. Daylight lasts about 13.2 hours around the middle of the month. Average relative humidity is 83% and the average cloud amount 83%.
Is May a good time to visit Guangzhou?
May is not among the most comfortable months by our comfort score: it is hot (average high 30 °C87 °F), it is fairly wet (298 mm12 in) and it is humid (83%). The most comfortable months in Guangzhou are October–March.
What to wear in May
For Guangzhou in May, pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
May in nearby places
Other months in Guangzhou
- January20 °C68 °F / 8 °C47 °F
- February23 °C73 °F / 11 °C52 °F
- March26 °C78 °F / 15 °C58 °F
- April29 °C84 °F / 19 °C66 °F
- May30 °C87 °F / 23 °C73 °F
- June31 °C87 °F / 25 °C77 °F
- July31 °C89 °F / 25 °C77 °F
- August32 °C89 °F / 25 °C77 °F
- September31 °C87 °F / 23 °C74 °F
- October29 °C84 °F / 19 °C66 °F
- November26 °C78 °F / 14 °C58 °F
- December21 °C69 °F / 9 °C48 °F
Frequently asked questions
How warm is Guangzhou in May?
In May the average high in Guangzhou is 30 °C (87 °F) and the average low is 23 °C (73 °F).
Does it rain a lot in Guangzhou in May?
On average about 298 mm (11.7 in) of precipitation falls in May; it ranks 2nd of the 12 months.
Is May the warmest month in Guangzhou?
No. The warmest month in Guangzhou is August, with an average high of 32 °C (89 °F). The coldest month is January, with an average low of 8 °C (47 °F).
How long is the day in Guangzhou in May?
In the middle of May the day in Guangzhou lasts about 13.2 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Guangzhou in May?
The average relative humidity in May is about 83%. Combined with warm days, it can feel muggy.
How cloudy is Guangzhou in May?
On average about 83% 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.