Current Sea Water Temperature:
+90.2°F
| Maximum Sea Water Temperature in August: | 93.0°F |
| Minimum Sea Water Temperature in August: | 85.8°F |
| Average water temperature in August: | 90.3°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| August 19 | 90.2°F | August 14 | 89.2°F |
| August 18 | 90.6°F | August 13 | 91.2°F |
| August 17 | 91.4°F | August 12 | 91.6°F |
| August 16 | 91.6°F | August 11 | 90.8°F |
| August 15 | 91.2°F | August 10 | 90.0°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 2026 for Hainan was 90.6°F. The maximum and minimum values were 89.4°F and 92.4°F respectively.
Sea Water Temperature in June
The average sea surface temperature in June 2026 for Hainan was 92.0°F. The maximum and minimum values were 90.0°F and 94.2°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2026 for Hainan was 90.6°F. The maximum and minimum values were 89.2°F and 91.6°F respectively.
China Resorts:
NAME
F°
| Beidaihe |  |
+74 |
| Beijing | |
+76 |
| Dadunhai |  |
+80 |
| Dalian | |
+80 |
| Guangzhou | |
+90 |
| Hainan |  |
+78 |
| Hong Kong | |
+82 |
| Macau | |
+84 |
| Quingdao |  |
+78 |
| Sanya | |
+80 |
| Shanghai | |
+82 |
| Shenzhen | |
+86 |
| Weihai | |
+80 |
| Yalong Bay | |
+80 |
| Yantai | |
+80 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hainan
Local time: 04:55
20 aug, thursday
| 0600 |  |
78°F | SE 2 mph |
| 0900 |  |
80°F | SW 4 mph |
| 1200 | |
84°F | SW 6 mph |
| 1500 | |
82°F | S 6 mph |
| 1800 | |
82°F | SW 1 mph |
| 2100 | |
82°F | NE 3 mph |
21 aug, friday
| 0000 | |
78°F | E 5 mph |
| 0300 | |
80°F | E 5 mph |