Measurements:
°C
°F
Sanya
78°F
W 16 mph
Feels like: 80°F
Precip: 0%
World Resorts China Sanya Weather

Sanya Sea Water Temperature

Current Sea Water Temperature:
+77.8°F
Maximum Sea Water Temperature in February: 81.2°F
Minimum Sea Water Temperature in February: 72.4°F
Average water temperature in February: 76.4°F

Sea Water Temperature for the Last 10 Days:

February 18 77.8°F February 13 76.4°F
February 17 77.6°F February 12 76.2°F
February 16 77.4°F February 11 76.0°F
February 15 76.8°F February 10 76.2°F
February 14 75.8°F February 09 76.6°F

When is the Warmest Sea for Sanya?

According to our data for the last three years for Sanya the highest average sea water temperature was in June, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in June

Select Year: 2025 2024 2023

The average sea surface temperature in June 2025 for Sanya was 89.2°F. The maximum and minimum values were 87.8°F and 91.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Sanya was 87.9°F. The maximum and minimum values were 85.8°F and 89.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Sanya was 88.2°F. The maximum and minimum values were 85.2°F and 89.6°F respectively.

Best Time to Visit Sanya
The most sunny months:
January 13 days
November 12 days
March 11 days
The most warm months:
June 93.6 °F
July 93.3 °F
August 93.2 °F
Warmest sea temperature:
June 89.1 °F
September 88.6 °F
July 88.5 °F
The most cold months:
January 78.9 °F
December 80.6 °F
February 80.7 °F
The most rainy months:
July 8 days
September 8 days
August 7 days
The most windy months:
January 8 mph
December 8 mph
November 8 mph

Sanya on the Weather Map

China Resorts:
NAME
Beidaihe +30
Beijing +48
Dadunhai +78
Dalian +30
Guangzhou +82
Haikou +74
Hainan +76
Hong Kong +68
Macau +68
Quingdao +40
Sanya +78
Shanghai +52
Shenzhen +70
Weihai +32
Yalong Bay +78
24 Hours Weather Forecast
Sanya
Local time: 19:23
18 feb, wednesday
2100 74°F
W
14 mph
19 feb, thursday
0000 72°F
SW
9 mph
0300 70°F
SW
8 mph
0600 68°F
SW
8 mph
0900 76°F
SW
10 mph
1200 82°F
W
13 mph
1500 84°F
W
14 mph
1800 78°F
W
12 mph