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

79.0

°F

November 17, 00:58

Trend:

decreasing

Yesterday:

79.2°F

Tomorrow:

78.8°F

Sunrise:

07:10

Sunset:

18:32

Day Length:

11 h. 22 min.

Saint-Louis in November

Minimum:

63.0°F

Average:

66.9°F

Maximum:

71.6°F

Sea water temperature in Saint-Louis today

As of now, in Saint-Louis, the water temperature is 79.0°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 3.5°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 79.2°F on 2022, while the historical minimum was 72.3°F on 2019.

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 78.2°F, the minimum temperature may reach 77.2°F, and the maximum might stay at 78.8°F.

Daily water temperature in Saint-Louis

Date Current Year

actual* / forecast**

last year 10 years average
Nov 3 84.8°F 78.5°F 78.4°F
Nov 4 83.3°F 77.5°F 78.2°F
Nov 5 83.3°F 78.0°F 78.3°F
Nov 6 83.4°F 79.2°F 78.8°F
Nov 7 83.5°F 77.0°F 78.5°F
Nov 8 83.5°F 76.4°F 78.3°F
Nov 9 83.3°F 76.4°F 78.3°F
Nov 10 83.2°F 75.8°F 77.7°F
Nov 11 82.9°F 75.7°F 77.6°F
Nov 12 82.2°F 75.2°F 77.1°F
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 75.7°F
Nov 17 79.0°F 75.7°F 75.6°F
Nov 18 78.8°F 76.1°F 75.3°F
Nov 19 78.6°F 76.4°F 75.1°F
Nov 20 78.5°F 76.6°F 75.0°F
Nov 21 78.3°F 75.9°F 74.8°F
Nov 22 78.3°F 76.6°F 74.8°F
Nov 23 77.7°F 75.8°F 74.2°F
Nov 24 77.2°F 75.1°F 73.7°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 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 80.5°F in Autumn.