All data are in degrees Fahrenheit

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Water temperature in Shanghai

Detailed information about the current water temperature in Shanghai. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Shanghai now

84.8

°F

September 19, 13:35

Trend:

decreasing

Yesterday:

84.9°F

Tomorrow:

84.4°F

Sunrise:

05:40

Sunset:

17:56

Day Length:

12 h. 16 min.

Shanghai in September

Minimum:

45.6°F

Average:

48.3°F

Maximum:

50.9°F

Sea water temperature in Shanghai today

As of now, in Shanghai, the water temperature is 84.8°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 4.5°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 84.8°F on 2024, while the historical minimum was 77.9°F on 2015.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 83.6°F, the minimum temperature may reach 83.0°F, and the maximum might stay at 84.4°F.

Daily water temperature in Shanghai

Date Current Year

actual* / forecast**

last year 10 years average
Sep 5 87.5°F 87.2°F 83.9°F
Sep 6 87.8°F 87.1°F 83.6°F
Sep 7 87.5°F 86.9°F 83.3°F
Sep 8 88.0°F 86.7°F 83.2°F
Sep 9 87.3°F 87.6°F 83.1°F
Sep 10 87.1°F 87.2°F 83.1°F
Sep 11 86.8°F 86.7°F 83.0°F
Sep 12 86.2°F 85.9°F 82.4°F
Sep 13 86.0°F 86.5°F 82.1°F
Sep 14 85.2°F 86.8°F 81.7°F
Sep 15 85.3°F 86.4°F 81.4°F
Sep 16 86.2°F 85.7°F 81.0°F
Sep 17 85.4°F 85.3°F 80.9°F
Sep 18 84.9°F 85.6°F 80.4°F
Sep 19 84.8°F 84.8°F 80.3°F
Sep 20 84.4°F 83.9°F 79.9°F
Sep 21 84.0°F 83.1°F 79.5°F
Sep 22 83.7°F 83.2°F 79.2°F
Sep 23 83.4°F 82.7°F 78.8°F
Sep 24 83.2°F 82.0°F 78.7°F
Sep 25 83.3°F 81.3°F 78.7°F
Sep 26 83.0°F 81.2°F 78.5°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Shanghai by month

In Shanghai, the months June through September offer comfortable swimming conditions, which amounts to 128 swimming days.
The warmest water in Shanghai was recorded on August 30, 2025, reaching a 89.8°F. While the coldest temperature occurred on February 8, 2016, dipping to 42.0°F. The average readings by season are 49.2°F in Winter, 60.3°F in Spring, 81.5°F in Summer, and 72.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Zhabei 84.9°F 3mi
Suzhou 86.6°F 51mi
Changshu 84.8°F 51mi
Nantong 84.9°F 66mi
Zhangjiagang 85.9°F 70mi

* current water temperature in this city

** straight line distance from Shanghai