All data are in degrees Fahrenheit

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Water temperature in Saint-Malo

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

66.5

°F

September 24, 07:30

Trend:

decreasing

Yesterday:

66.7°F

Tomorrow:

66.5°F

Sunrise:

07:57

Sunset:

20:03

Day Length:

12 h. 6 min.

Saint-Malo in September

Minimum:

47.1°F

Average:

49.2°F

Maximum:

51.5°F

Sea water temperature in Saint-Malo today

As of now, in Saint-Malo, the water temperature is 66.5°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.9°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 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 maximum temperature for this date. The maximum temperature recorded for this date was 66.4°F on 2023, while the historical minimum was 62.4°F on 2017.

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 66.1°F, the minimum temperature may reach 65.4°F, and the maximum might stay at 66.6°F.

Daily water temperature in Saint-Malo

Date Current Year

actual* / forecast**

last year 10 years average
Sep 10 67.9°F 66.4°F 66.3°F
Sep 11 67.5°F 66.1°F 66.0°F
Sep 12 67.5°F 65.6°F 66.0°F
Sep 13 67.4°F 65.8°F 66.0°F
Sep 14 67.3°F 65.7°F 65.9°F
Sep 15 67.8°F 65.0°F 65.8°F
Sep 16 67.8°F 64.9°F 65.7°F
Sep 17 67.7°F 65.0°F 65.6°F
Sep 18 67.5°F 64.6°F 65.5°F
Sep 19 66.8°F 64.6°F 65.4°F
Sep 20 66.5°F 64.0°F 65.1°F
Sep 21 66.6°F 64.6°F 65.1°F
Sep 22 66.8°F 64.6°F 65.1°F
Sep 23 66.7°F 64.2°F 64.8°F
Sep 24 66.5°F 63.5°F 64.6°F
Sep 25 66.5°F 63.4°F 64.5°F
Sep 26 66.6°F 63.4°F 64.7°F
Sep 27 66.4°F 63.3°F 64.5°F
Sep 28 66.2°F 63.1°F 64.3°F
Sep 29 66.0°F 63.0°F 64.1°F
Sep 30 65.6°F 62.8°F 63.7°F
Oct 1 65.4°F 62.8°F 63.5°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-Malo by month

In an average year, Saint-Malo offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Saint-Malo was recorded on August 13, 2026, reaching a 71.2°F. While the coldest temperature occurred on March 1, 2018, dipping to 44.6°F. The average readings by season are 49.2°F in Winter, 51.9°F in Spring, 64.4°F in Summer, and 61.1°F in Autumn.