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

80.5

°F

September 14, 12:54

Trend:

decreasing

Yesterday:

80.9°F

Tomorrow:

80.2°F

Sunrise:

05:37

Sunset:

18:02

Day Length:

12 h. 25 min.

Shanghai in September

Minimum:

45.6°F

Average:

48.5°F

Maximum:

50.9°F

Sea water temperature in Shanghai today

As of now, in Shanghai, the water temperature is 80.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.4°F lower 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 minimum temperature for this date. The maximum temperature recorded for this date was 86.8°F on 2024, while the historical minimum was 80.4°F on 2016.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 79.6°F, the minimum temperature may reach 78.7°F, and the maximum might stay at 80.2°F.

Daily water temperature in Shanghai

Date Current Year

actual* / forecast**

last year 10 years average
Aug 31 84.1°F 88.4°F 85.2°F
Sep 1 84.8°F 88.6°F 85.2°F
Sep 2 85.3°F 88.0°F 84.8°F
Sep 3 85.0°F 87.9°F 84.5°F
Sep 4 85.1°F 87.4°F 84.4°F
Sep 5 85.0°F 87.5°F 84.2°F
Sep 6 84.8°F 87.8°F 83.9°F
Sep 7 84.4°F 87.5°F 83.6°F
Sep 8 84.1°F 88.0°F 83.4°F
Sep 9 83.5°F 87.3°F 83.3°F
Sep 10 82.7°F 87.1°F 83.1°F
Sep 11 82.4°F 86.8°F 83.1°F
Sep 12 82.0°F 86.2°F 82.5°F
Sep 13 80.9°F 86.0°F 82.3°F
Sep 14 80.5°F 85.2°F 82.0°F
Sep 15 80.2°F 85.3°F 81.6°F
Sep 16 79.9°F 86.2°F 81.3°F
Sep 17 79.7°F 85.4°F 81.1°F
Sep 18 79.6°F 84.9°F 81.0°F
Sep 19 79.6°F 85.9°F 81.1°F
Sep 20 79.2°F 85.1°F 80.6°F
Sep 21 78.7°F 84.3°F 80.2°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 134 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 49.5°F in Winter, 60.6°F in Spring, 81.8°F in Summer, and 72.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Zhabei 80.5°F 3mi
Suzhou 78.8°F 51mi
Changshu 80.5°F 51mi
Nantong 80.2°F 66mi
Zhangjiagang 79.9°F 70mi

* current water temperature in this city

** straight line distance from Shanghai