Measurements:
°C
°F
Nantong
42°F
SE 17 mph
Feels like: 34°F
Precip: 0%
World Resorts China Nantong Weather

Nantong Sea Water Temperature

Current Sea Water Temperature:
+58.6°F
Maximum Sea Water Temperature in December: 65.6°F
Minimum Sea Water Temperature in December: 44.6°F
Average water temperature in December: 55.6°F

Sea Water Temperature for the Last 10 Days:

December 13 58.6°F December 08 59.2°F
December 12 58.8°F December 07 60.0°F
December 11 59.2°F December 06 60.0°F
December 10 58.8°F December 05 59.8°F
December 09 59.2°F December 04 60.2°F

When is the Warmest Sea for Nantong?

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

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Nantong was 91.7°F. The maximum and minimum values were 88.8°F and 95.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Nantong was 88.2°F. The maximum and minimum values were 84.8°F and 90.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Nantong was 89.0°F. The maximum and minimum values were 83.4°F and 92.8°F respectively.

Best Time to Visit Nantong
The most sunny months:
December 17 days
January 16 days
October 16 days
The most warm months:
August 93.0 °F
July 92.9 °F
June 86.5 °F
Warmest sea temperature:
August 88.4 °F
July 85.5 °F
September 83.8 °F
The most cold months:
January 46.1 °F
February 48.3 °F
December 49.8 °F
The most rainy months:
July 9 days
August 8 days
June 6 days
The most windy months:
May 9 mph
March 9 mph
April 9 mph

Nantong on the Weather Map

China Resorts:
NAME
Beidaihe +28
Beijing +28
Dadunhai +78
Dalian +28
Guangzhou +56
Haikou +74
Hainan +70
Hangzhou +46
Hong Kong +66
Macau +64
Quingdao +34
Sanya +78
Shanghai +46
Shenzhen +64
Yalong Bay +78
24 Hours Weather Forecast
Nantong
Local time: 17:25
13 dec, saturday
1800 42°F
SE
17 mph
2100 40°F
SE
15 mph
14 dec, sunday
0000 38°F
SE
18 mph
0300 34°F
SE
16 mph
0600 32°F
SE
12 mph
0900 36°F
SE
12 mph
1200 44°F
SE
12 mph
1500 48°F
SE
11 mph