Water temperature in Shanghai

This data the coastal Shanghai sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Shanghai

Water temperature in Shanghai today is 28.3°C. Based on our historical data over a period of ten years, the warmest water in this day in Shanghai was recorded in 2024 and was 29.1°C, and the coldest was recorded in 2014 at 24.9°C. Sea water temperature in Shanghai is expected to drop to 25°C in the next 10 days. September average water temperature in Shanghai is 26.1°C, the minimum temperature is 21.9°C, and the maximum is 29.6°C.

The swimming season in Shanghai lasts from May to October. During those months, Shanghai water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Shanghai in winter reaches 9°C, in spring 14.5°C, in summer the average temperature rises to 26.2°C, and in autumn it is 21.8°C.

Shanghai water temperature now

The sea salinity in Shanghai is 10.30‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Shanghai for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Shanghai. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Shanghai. Data in table shown for 14 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Shanghai

Shanghai weather forecast

Current temperature and weather

Data in a table show Shanghai temperature today (14 September 2025). For more information and forecast for a few days, go to the weather forecast Shanghai.

0-3 h	3-6 h	6-9 h	9-12 h
25.7°C	25.6°C	25.5°C	30.1°C

12-15 h	15-18 h	18-21 h	21-24 h
32.8°C	31.1°C	27.5°C	25.9°C

Shanghai water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Shanghai. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Shanghai on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Shanghai

The nearest beaches and cities from Shanghai with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Yangshan	28.2°C	27°C		0.14 m
Caiyuan	26.7°C	27°C		0.22 m
Wulong	26.7°C	27°C		0.24 m
Huaniao	27°C	27°C		0.3 m
Qushan	28.1°C	27°C		0.23 m
Gouqi	26.8°C	27°C		0.35 m
Baoshan	29.7°C	31°C		0.04 m
Shengshan	27°C	27°C		0.39 m
Dongsha	28.4°C	29°C		0.15 m
Daishan	27.9°C	29°C		0.14 m

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Our report for Shanghai is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.