Jieyang is warmest in July, averaging 32° by day and 25° at night. The wettest month is June with 324 mm, and the year brings about 1683 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 22° | 9° | 28 mm | 15° | 10.7 h | Sightseeing |
| February | 23° | 10° | 76 mm | 15° | 11.2 h | Sightseeing |
| March | 26° | 13° | 99 mm | 17° | 11.8 h | Beach weather |
| April | 28° | 18° | 177 mm | 21° | 12.6 h | Mild |
| May | 30° | 22° | 226 mm | 25° | 13.1 h | Rainy season |
| June | 30° | 24° | 324 mm | 27° | 13.4 h | Rainy season |
| July | 32° | 25° | 205 mm | 28° | 13.3 h | Rainy season |
| August | 31° | 25° | 239 mm | 28° | 12.8 h | Rainy season |
| September | 32° | 23° | 171 mm | 28° | 12.1 h | Mild |
| October | 29° | 19° | 62 mm | 26° | 11.4 h | Beach weather |
| November | 27° | 16° | 54 mm | 22° | 10.8 h | Beach weather |
| December | 22° | 10° | 22 mm | 18° | 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: March, October and November — highs around 27°, nights no colder than 13°, and at most 99 mm of rain in a month. The sea sits at 17–26° then.
Walking the city: January, February and December — highs of 22–23° and no more than 76 mm of rain a month.
Wet season: May, June, July and August — up to 324 mm in a single month.