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

64.1

°F

January 24, 21:09

Trend:

increasing

Yesterday:

64.0°F

Tomorrow:

64.3°F

Sunrise:

07:37

Sunset:

18:59

Day Length:

11 h. 22 min.

Saint-Louis in February

Minimum:

64.9°F

Average:

68.1°F

Maximum:

71.6°F

Sea water temperature in Saint-Louis today

As of now, in Saint-Louis, the water temperature is 64.1°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.2°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly 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 71.8°F on 2016, while the historical minimum was 62.6°F on 2018.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 63.9°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Saint-Louis

Date Current Year

actual* / forecast**

last year 10 years average
Jan 10 64.7°F 65.2°F 67.0°F
Jan 11 63.1°F 65.7°F 66.8°F
Jan 12 64.9°F 64.5°F 66.8°F
Jan 13 64.6°F 64.8°F 66.5°F
Jan 14 63.9°F 65.0°F 66.7°F
Jan 15 64.3°F 63.4°F 66.8°F
Jan 16 63.9°F 64.4°F 66.5°F
Jan 17 65.0°F 62.7°F 66.5°F
Jan 18 64.3°F 63.0°F 66.5°F
Jan 19 64.4°F 63.0°F 66.4°F
Jan 20 64.5°F 64.4°F 66.3°F
Jan 21 64.6°F 64.9°F 66.4°F
Jan 22 65.0°F 64.2°F 66.2°F
Jan 23 64.0°F 65.0°F 66.3°F
Jan 24 64.1°F 64.6°F 66.3°F
Jan 25 64.3°F 65.4°F 66.4°F
Jan 26 63.9°F 64.8°F 66.1°F
Jan 27 64.0°F 64.7°F 66.1°F
Jan 28 63.9°F 64.9°F 66.0°F
Jan 29 63.8°F 64.3°F 65.9°F
Jan 30 63.7°F 65.7°F 65.8°F
Jan 31 63.7°F 66.2°F 65.9°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 67.2°F in Winter, 66.4°F in Spring, 79.0°F in Summer, and 80.5°F in Autumn.