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

76.4

°F

June 17, 02:10

Trend:

stable

Yesterday:

76.5°F

Tomorrow:

76.9°F

Sunrise:

06:34

Sunset:

19:39

Day Length:

13 h. 5 min.

Saint-Louis in June

Minimum:

64.5°F

Average:

67.5°F

Maximum:

70.8°F

Sea water temperature in Saint-Louis today

As of now, in Saint-Louis, the water temperature is 76.4°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 rise 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 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 77.9°F on 2017, while the historical minimum was 71.3°F on 2024.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 77.4°F, with minimum temperature starting at 76.8°F, while the maximum might reach 77.8°F.

Daily water temperature in Saint-Louis

Date Current Year

actual* / forecast**

last year 10 years average
Jun 3 76.5°F 75.0°F 72.2°F
Jun 4 75.7°F 73.5°F 72.0°F
Jun 5 74.2°F 76.3°F 72.1°F
Jun 6 73.7°F 77.1°F 72.8°F
Jun 7 76.0°F 78.0°F 73.5°F
Jun 8 75.5°F 77.0°F 73.2°F
Jun 9 73.9°F 77.9°F 73.3°F
Jun 10 75.1°F 76.5°F 73.7°F
Jun 11 76.6°F 76.0°F 74.1°F
Jun 12 75.8°F 76.4°F 74.5°F
Jun 13 74.7°F 78.5°F 74.9°F
Jun 14 76.9°F 78.1°F 75.3°F
Jun 15 75.7°F 76.8°F 75.0°F
Jun 16 76.5°F 76.8°F 75.1°F
Jun 17 76.4°F 76.2°F 75.0°F
Jun 18 76.9°F 77.3°F 75.5°F
Jun 19 76.8°F 76.6°F 75.5°F
Jun 20 77.6°F 76.3°F 76.2°F
Jun 21 77.5°F 76.3°F 76.1°F
Jun 22 77.5°F 74.3°F 76.1°F
Jun 23 77.8°F 76.0°F 76.4°F
Jun 24 77.6°F 76.8°F 76.2°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 Saint-Louis by month

In Saint-Louis, the months June through November offer comfortable swimming conditions, which amounts to 172 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.