All data are in degrees Fahrenheit

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Water temperature in La Rochelle

Detailed information about the current water temperature in La Rochelle. 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 La Rochelle now

71.9

°F

September 10, 06:57

Trend:

decreasing

Yesterday:

72.0°F

Tomorrow:

71.7°F

Sunrise:

07:36

Sunset:

20:27

Day Length:

12 h. 51 min.

La Rochelle in September

Minimum:

44.7°F

Average:

49.0°F

Maximum:

51.5°F

Sea water temperature in La Rochelle today

As of now, in La Rochelle, the water temperature is 71.9°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 3.4°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 72.9°F on 2023, while the historical minimum was 65.9°F on 2019.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 71.4°F, the minimum temperature may reach 71.0°F, and the maximum might stay at 71.7°F.

Daily water temperature in La Rochelle

Date Current Year

actual* / forecast**

last year 10 years average
Aug 27 72.6°F 71.3°F 70.6°F
Aug 28 72.5°F 70.6°F 70.4°F
Aug 29 72.0°F 70.1°F 70.3°F
Aug 30 71.7°F 69.8°F 69.9°F
Aug 31 70.7°F 70.2°F 69.9°F
Sep 1 70.6°F 68.8°F 69.5°F
Sep 2 70.5°F 69.4°F 69.5°F
Sep 3 70.8°F 68.7°F 69.3°F
Sep 4 71.1°F 68.6°F 69.2°F
Sep 5 71.9°F 68.1°F 69.2°F
Sep 6 71.6°F 68.0°F 69.1°F
Sep 7 72.8°F 68.8°F 69.3°F
Sep 8 72.2°F 68.7°F 69.0°F
Sep 9 72.0°F 67.7°F 68.6°F
Sep 10 71.9°F 68.1°F 68.5°F
Sep 11 71.7°F 67.7°F 68.2°F
Sep 12 71.4°F 67.0°F 68.0°F
Sep 13 71.5°F 66.8°F 68.1°F
Sep 14 71.5°F 66.7°F 68.1°F
Sep 15 71.4°F 66.0°F 67.9°F
Sep 16 71.4°F 66.6°F 68.0°F
Sep 17 71.0°F 66.8°F 67.6°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 La Rochelle by month

In an average year, La Rochelle offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in La Rochelle was recorded on June 28, 2026, reaching a 77.3°F. While the coldest temperature occurred on January 11, 2026, dipping to 43.8°F. The average readings by season are 49.3°F in Winter, 55.8°F in Spring, 68.9°F in Summer, and 62.2°F in Autumn.