Guangzhou is warmest in July, averaging 33° by day and 26° at night. The wettest month is June with 381 mm, and the year brings about 1875 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 23° | 9° | 22 mm | 16° | 10.7 h | Sightseeing |
| February | 24° | 11° | 81 mm | 17° | 11.2 h | Sightseeing |
| March | 28° | 15° | 112 mm | 19° | 11.8 h | Mild |
| April | 29° | 19° | 180 mm | 22° | 12.5 h | Rainy season |
| May | 31° | 23° | 313 mm | 26° | 13.1 h | Rainy season |
| June | 31° | 26° | 381 mm | 28° | 13.4 h | Rainy season |
| July | 33° | 26° | 177 mm | 29° | 13.3 h | Mild |
| August | 32° | 26° | 285 mm | 29° | 12.8 h | Rainy season |
| September | 32° | 24° | 204 mm | 29° | 12.1 h | Rainy season |
| October | 29° | 20° | 50 mm | 27° | 11.4 h | Beach weather |
| November | 27° | 16° | 51 mm | 23° | 10.9 h | Beach weather |
| December | 22° | 10° | 19 mm | 19° | 10.6 h | Sightseeing |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: October and November — highs around 28°, nights no colder than 16°, and at most 51 mm of rain in a month. The sea sits at 23–27° then.
Walking the city: January, February and December — highs of 22–24° and no more than 81 mm of rain a month.
Wet season: April, May, June, August and September — up to 381 mm in a single month.