Current Sea Water Temperature:
+90.8°F
| Maximum Sea Water Temperature in June: | 95.0°F |
| Minimum Sea Water Temperature in June: | 85.0°F |
| Average water temperature in June: | 90.4°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| June 19 | 90.8°F | June 14 | 92.4°F |
| June 18 | 90.6°F | June 13 | 91.6°F |
| June 17 | 91.0°F | June 12 | 91.0°F |
| June 16 | 90.4°F | June 11 | 90.6°F |
| June 15 | 90.8°F | June 10 | 90.8°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 2026 for Hainan was 91.9°F. The maximum and minimum values were 90.4°F and 94.2°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 |  |
+76 |
| Beijing |  |
+92 |
| Dadunhai | |
+92 |
| Dalian |  |
+72 |
| Guangzhou |  |
+98 |
| Hainan |  |
+100 |
| Hong Kong | |
+90 |
| Quingdao | |
+82 |
| Sanya | |
+92 |
| Shanghai | |
+90 |
| Shenzhen | |
+92 |
| Weihai | |
+72 |
| Xiamen | |
+88 |
| Yalong Bay | |
+92 |
| Yantai | |
+74 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hainan
Local time: 14:41
20 jun, saturday
| 1500 |  |
100°F | N 6 mph |
| 1800 | |
96°F | N 2 mph |
| 2100 |  |
84°F | N 4 mph |
21 jun, sunday
| 0000 |  |
80°F | N 6 mph |
| 0300 | |
78°F | N 6 mph |
| 0600 | |
78°F | N 6 mph |
| 0900 |  |
90°F | N 6 mph |
| 1200 | |
98°F | N 4 mph |