All data are in degrees Fahrenheit

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Water temperature in Rui’an

Detailed information about the current water temperature in Rui’an. 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 Rui’an now

81.1

°F

September 23, 08:31

Trend:

decreasing

Yesterday:

81.6°F

Tomorrow:

80.5°F

Sunrise:

05:46

Sunset:

17:54

Day Length:

12 h. 8 min.

Rui’an in September

Minimum:

51.0°F

Average:

55.2°F

Maximum:

59.4°F

Sea water temperature in Rui’an today

As of now, in Rui’an, the water temperature is 81.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.6°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 84.7°F on 2025, while the historical minimum was 78.1°F on 2016.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest 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 80.2°F, the minimum temperature may reach 80.0°F, and the maximum might stay at 80.5°F.

Daily water temperature in Rui’an

Date Current Year

actual* / forecast**

last year 10 years average
Sep 9 82.2°F 86.8°F 84.1°F
Sep 10 82.6°F 86.4°F 84.0°F
Sep 11 81.6°F 85.8°F 83.9°F
Sep 12 80.7°F 86.3°F 83.6°F
Sep 13 80.5°F 86.4°F 83.4°F
Sep 14 80.3°F 86.8°F 83.2°F
Sep 15 79.9°F 86.0°F 83.0°F
Sep 16 79.8°F 86.1°F 82.5°F
Sep 17 79.7°F 86.4°F 82.4°F
Sep 18 79.4°F 87.7°F 82.5°F
Sep 19 79.5°F 89.0°F 82.4°F
Sep 20 80.3°F 88.0°F 82.3°F
Sep 21 81.4°F 87.0°F 82.4°F
Sep 22 81.6°F 85.7°F 82.2°F
Sep 23 81.1°F 84.7°F 81.7°F
Sep 24 80.5°F 84.1°F 81.1°F
Sep 25 80.2°F 83.6°F 80.8°F
Sep 26 80.2°F 84.1°F 80.8°F
Sep 27 80.2°F 84.4°F 80.7°F
Sep 28 80.0°F 84.7°F 80.6°F
Sep 29 80.0°F 83.9°F 80.5°F
Sep 30 80.1°F 85.7°F 80.7°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 Rui’an by month

In Rui’an, the months June through October offer comfortable swimming conditions, which amounts to 152 swimming days.
The warmest water in Rui’an was recorded on August 11, 2022, reaching a 89.0°F. While the coldest temperature occurred on January 19, 2025, dipping to 48.0°F. The average readings by season are 55.7°F in Winter, 63.8°F in Spring, 82.6°F in Summer, and 75.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Wenzhou 78.6°F 15mi
Taizhou 80.0°F 77mi
Jiaojiang 80.1°F 81mi

* current water temperature in this city

** straight line distance from Rui’an