Current Sea Water Temperature:
+85.8°F
| Maximum Sea Water Temperature in May: | 93.6°F |
| Minimum Sea Water Temperature in May: | 81.8°F |
| Average water temperature in May: | 88.1°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 10 | 85.8°F | May 05 | 85.2°F |
| May 09 | 85.6°F | May 04 | 86.0°F |
| May 08 | 86.0°F | May 03 | 85.4°F |
| May 07 | 87.0°F | May 02 | 84.8°F |
| May 06 | 85.4°F | May 01 | 85.4°F |
When is the Warmest Sea for Hainan?
According to our data for the last three years for Hainan the highest average sea water temperature was in July, June and August.
Average Water Temperature by Month, °F
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Hainan was 90.2°F. The maximum and minimum values were 89.0°F and 91.8°F respectively.
Sea Water Temperature in June
The average sea surface temperature in June 2025 for Hainan was 90.2°F. The maximum and minimum values were 89.4°F and 91.2°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Hainan was 90.3°F. The maximum and minimum values were 88.2°F and 91.8°F respectively.
China Resorts:
NAME
F°
| Beidaihe |  |
+68 |
| Beijing | |
+90 |
| Dadunhai |  |
+90 |
| Dalian | |
+62 |
| Guangzhou | |
+92 |
| Haikou |  |
+86 |
| Hainan |  |
+88 |
| Hong Kong |  |
+84 |
| Quingdao | |
+68 |
| Sanya | |
+90 |
| Shanghai | |
+88 |
| Shenzhen | |
+86 |
| Weihai | |
+62 |
| Yalong Bay | |
+90 |
| Yantai | |
+70 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hainan
Local time: 10:54
11 may, monday
| 1200 |  |
88°F | S 2 mph |
| 1500 | |
88°F | S 4 mph |
| 1800 | |
84°F | S 3 mph |
| 2100 |  |
78°F | NW 1 mph |
12 may, tuesday
| 0000 |  |
76°F | N 2 mph |
| 0300 | |
76°F | N 2 mph |
| 0600 | |
74°F | N 2 mph |
| 0900 |  |
84°F | NW 2 mph |