Guankou is warmest in August, averaging 32° by day and 24° at night. The wettest month is June with 306 mm, and the year brings about 1775 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 13° | 1° | 93 mm | 10.4 h | Mild |
| February | 14° | 3° | 134 mm | 11.0 h | Mild |
| March | 20° | 8° | 180 mm | 11.8 h | Mild |
| April | 23° | 13° | 234 mm | 12.7 h | Rainy season |
| May | 27° | 18° | 267 mm | 13.4 h | Rainy season |
| June | 30° | 22° | 306 mm | 13.8 h | Rainy season |
| July | 32° | 24° | 198 mm | 13.6 h | Rainy season |
| August | 32° | 24° | 102 mm | 13.0 h | Beach weather |
| September | 30° | 20° | 78 mm | 12.2 h | Beach weather |
| October | 25° | 14° | 65 mm | 11.3 h | Sightseeing |
| November | 21° | 9° | 87 mm | 10.6 h | Sightseeing |
| December | 13° | 2° | 31 mm | 10.2 h | Mild |
High and low are average daily maximum and minimum, rain is typical monthly total, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER — averages, not promises.
When to go
Beach weather: August and September — highs around 31°, nights no colder than 20°, and at most 102 mm of rain in a month.
Walking the city: October and November — highs of 21–25° and no more than 87 mm of rain a month.
Wet season: April, May, June and July — up to 306 mm in a single month.