Measurements:
°C
°F
Sanya
70°F
SW 5 mph
Feels like: 70°F
Precip: 0%
World Resorts China Sanya Weather

Sanya Sea Water Temperature

Current Sea Water Temperature:
+76.6°F
Maximum Sea Water Temperature in January: 80.8°F
Minimum Sea Water Temperature in January: 73.6°F
Average water temperature in January: 77.1°F

Sea Water Temperature for the Last 10 Days:

January 13 76.6°F January 08 77.4°F
January 12 76.2°F January 07 78.0°F
January 11 76.6°F January 06 78.2°F
January 10 76.6°F January 05 78.2°F
January 09 77.0°F January 04 78.2°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 12 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 79.0 °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 +28
Beijing +26
Dadunhai +70
Dalian +34
Guangzhou +68
Haikou +68
Hainan +66
Hangzhou +52
Hong Kong +66
Macau +68
Quingdao +42
Sanya +70
Shanghai +52
Shenzhen +64
Yalong Bay +70
24 Hours Weather Forecast
Sanya
Local time: 09:46
14 jan, wednesday
1200 76°F
NW
8 mph
1500 78°F
W
11 mph
1800 74°F
W
9 mph
2100 68°F
SW
7 mph
15 jan, thursday
0000 66°F
SW
6 mph
0300 66°F
SW
6 mph
0600 64°F
S
5 mph
0900 72°F
SW
3 mph