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

59.1

°F

October 27, 01:22

Trend:

decreasing

Yesterday:

59.1°F

Tomorrow:

58.9°F

Sunrise:

07:44

Sunset:

18:01

Day Length:

10 h. 17 min.

Saint-Nazaire in November

Minimum:

47.2°F

Average:

48.8°F

Maximum:

51.3°F

Sea water temperature in Saint-Nazaire today

As of now, in Saint-Nazaire, the water temperature is 59.1°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 0.4°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 62.0°F on 2022, while the historical minimum was 57.5°F on 2020.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 58.6°F, the minimum temperature may reach 58.0°F, and the maximum might stay at 58.9°F.

Daily water temperature in Saint-Nazaire

Date Current Year

actual* / forecast**

last year 10 years average
Oct 13 62.2°F 60.9°F 61.5°F
Oct 14 61.6°F 60.6°F 61.2°F
Oct 15 61.5°F 60.4°F 61.1°F
Oct 16 61.3°F 61.3°F 61.1°F
Oct 17 61.3°F 60.9°F 60.8°F
Oct 18 61.2°F 60.3°F 60.7°F
Oct 19 60.6°F 60.1°F 60.6°F
Oct 20 60.4°F 60.4°F 60.5°F
Oct 21 60.2°F 60.3°F 60.2°F
Oct 22 60.1°F 59.6°F 60.0°F
Oct 23 59.6°F 59.4°F 59.8°F
Oct 24 59.6°F 60.3°F 59.7°F
Oct 25 59.3°F 60.9°F 59.6°F
Oct 26 59.1°F 60.2°F 59.5°F
Oct 27 59.1°F 59.4°F 59.5°F
Oct 28 58.9°F 59.5°F 59.3°F
Oct 29 58.8°F 59.1°F 59.2°F
Oct 30 58.8°F 59.3°F 59.2°F
Oct 31 58.8°F 59.9°F 59.2°F
Nov 1 58.7°F 59.9°F 59.1°F
Nov 2 58.4°F 59.7°F 58.8°F
Nov 3 58.0°F 59.3°F 58.4°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 49.0°F in Winter, 54.3°F in Spring, 65.8°F in Summer, and 60.5°F in Autumn.