Current Sea Water Temperature:
+91.8°F
| Maximum Sea Water Temperature in July: | 94.2°F |
| Minimum Sea Water Temperature in July: | 85.8°F |
| Average water temperature in July: | 90.7°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| July 20 | 91.8°F | July 15 | 90.0°F |
| July 19 | 91.8°F | July 14 | 90.2°F |
| July 18 | 91.8°F | July 13 | 90.0°F |
| July 17 | 90.6°F | July 12 | 90.2°F |
| July 16 | 90.0°F | July 11 | 90.2°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 90.0°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 2024 for Hainan was 91.3°F. The maximum and minimum values were 89.6°F and 92.6°F respectively.
China Resorts:
NAME
F°
| Beidaihe |  |
+80 |
| Beijing | |
+80 |
| Dadunhai |  |
+82 |
| Dalian |  |
+82 |
| Guangzhou | |
+84 |
| Hainan | |
+76 |
| Hangzhou |  |
+90 |
| Hong Kong | |
+86 |
| Macau | |
+86 |
| Quingdao | |
+86 |
| Sanya | |
+82 |
| Shanghai | |
+88 |
| Shenzhen | |
+84 |
| Weihai | |
+84 |
| Yalong Bay | |
+82 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hainan
Local time: 18:06
20 jul, sunday
| 2100 |  |
76°F | NE 7 mph |
21 jul, monday
| 0000 | |
76°F | NE 9 mph |
| 0300 |  |
78°F | NE 11 mph |
| 0600 | |
76°F | NE 6 mph |
| 0900 | |
76°F | N 6 mph |
| 1200 | |
78°F | NE 2 mph |
| 1500 | |
80°F | N 2 mph |
| 1800 | |
78°F | N 2 mph |