All data are in degrees Fahrenheit

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Water temperature in Saint-Nazaire

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

65.5

°F

June 15, 06:42

Trend:

stable

Yesterday:

65.5°F

Tomorrow:

65.6°F

Sunrise:

06:12

Sunset:

22:07

Day Length:

15 h. 55 min.

Saint-Nazaire in June

Minimum:

46.1°F

Average:

48.7°F

Maximum:

51.5°F

Sea water temperature in Saint-Nazaire today

As of now, in Saint-Nazaire, the water temperature is 65.5°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 1.8°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 66.1°F on 2023, while the historical minimum was 60.3°F on 2016.

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 suggests a gradual increase. The average temperature is expected to rise up to 66.4°F, with minimum temperature starting at 65.6°F, while the maximum might reach 67.3°F.

Daily water temperature in Saint-Nazaire

Date Current Year

actual* / forecast**

last year 10 years average
Jun 1 67.7°F 63.5°F 62.5°F
Jun 2 67.3°F 63.7°F 62.1°F
Jun 3 67.2°F 64.4°F 62.7°F
Jun 4 65.5°F 64.1°F 62.7°F
Jun 5 65.6°F 63.9°F 62.7°F
Jun 6 66.5°F 63.8°F 62.9°F
Jun 7 65.5°F 64.9°F 63.1°F
Jun 8 65.7°F 63.5°F 63.2°F
Jun 9 65.3°F 63.4°F 63.4°F
Jun 10 65.4°F 63.4°F 63.5°F
Jun 11 64.9°F 64.5°F 63.6°F
Jun 12 66.2°F 65.3°F 63.7°F
Jun 13 65.9°F 67.3°F 64.0°F
Jun 14 65.5°F 66.7°F 63.7°F
Jun 15 65.5°F 65.6°F 63.6°F
Jun 16 65.6°F 66.2°F 63.7°F
Jun 17 65.9°F 67.0°F 64.1°F
Jun 18 66.1°F 67.3°F 64.2°F
Jun 19 66.5°F 67.7°F 64.7°F
Jun 20 66.6°F 66.9°F 64.7°F
Jun 21 67.1°F 68.6°F 65.2°F
Jun 22 67.3°F 69.7°F 65.5°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-Nazaire by month

In an average year, Saint-Nazaire offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Saint-Nazaire was recorded on July 24, 2019, reaching a 73.0°F. While the coldest temperature occurred on February 2, 2025, dipping to 44.8°F. The average readings by season are 48.9°F in Winter, 54.7°F in Spring, 66.1°F in Summer, and 60.5°F in Autumn.