All data are in degrees Fahrenheit

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Water temperature in Saint-Louis

Detailed information about the current water temperature in Saint-Louis. 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 Saint-Louis now

74.8

°F

November 27, 01:45

Trend:

stable

Yesterday:

74.8°F

Tomorrow:

74.5°F

Sunrise:

07:15

Sunset:

18:32

Day Length:

11 h. 17 min.

Saint-Louis in December

Minimum:

63.3°F

Average:

66.8°F

Maximum:

71.6°F

Sea water temperature in Saint-Louis today

As of now, in Saint-Louis, the water temperature is 74.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.4°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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 77.8°F on 2020, while the historical minimum was 67.5°F on 2018.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 73.9°F, the minimum temperature may reach 73.6°F, and the maximum might stay at 74.5°F.

Daily water temperature in Saint-Louis

Date Current Year

actual* / forecast**

last year 10 years average
Nov 13 81.7°F 74.9°F 76.8°F
Nov 14 79.5°F 74.4°F 76.3°F
Nov 15 79.2°F 75.2°F 76.0°F
Nov 16 79.2°F 76.0°F 76.0°F
Nov 17 77.7°F 75.7°F 75.8°F
Nov 18 77.6°F 76.1°F 75.5°F
Nov 19 77.3°F 76.4°F 75.3°F
Nov 20 76.6°F 76.6°F 75.2°F
Nov 21 76.5°F 75.9°F 75.0°F
Nov 22 76.4°F 76.6°F 75.0°F
Nov 23 76.0°F 75.8°F 74.4°F
Nov 24 75.6°F 75.1°F 73.9°F
Nov 25 75.1°F 74.8°F 73.6°F
Nov 26 74.8°F 73.9°F 73.4°F
Nov 27 74.8°F 72.4°F 73.4°F
Nov 28 74.5°F 73.3°F 73.1°F
Nov 29 73.9°F 73.0°F 72.5°F
Nov 30 73.8°F 73.1°F 72.5°F
Dec 1 73.6°F 71.9°F 72.3°F
Dec 2 73.7°F 72.0°F 72.3°F
Dec 3 74.0°F 72.2°F 72.6°F
Dec 4 73.7°F 72.2°F 72.4°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 Saint-Louis by month

In Saint-Louis, the months June through November offer comfortable swimming conditions, which amounts to 171 swimming days.
The warmest water in Saint-Louis was recorded on September 18, 2025, reaching a 86.3°F. While the coldest temperature occurred on February 10, 2018, dipping to 59.6°F. The average readings by season are 67.3°F in Winter, 66.4°F in Spring, 79.0°F in Summer, and 80.6°F in Autumn.