What is the current water temperature in Saint-Nazaire?

Q: What is the current water temperature in Saint-Nazaire?

As of now, in Saint-Nazaire, the water temperature is 13.38°C. 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.

France > Saint-Nazaire

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.

56.1

°F

April 10, 16:24

Trend:

increasing

Yesterday:

55.4°F

Tomorrow:

56.1°F

Sunrise:

07:31

Sunset:

20:50

Day Length:

13 h. 19 min.

Saint-Nazaire in April

Minimum:

48.5°F

Average:

49.7°F

Maximum:

52.5°F

Sea water temperature in Saint-Nazaire today

As of now, in Saint-Nazaire, the water temperature is 56.1°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 3.2°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 55.4°F on 2020, while the historical minimum was 51.4°F on 2018.

latest data

last year

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 suggests a gradual increase. The average temperature is expected to rise up to 57.0°F, with minimum temperature starting at 56.1°F, while the maximum might reach 57.8°F.

Daily water temperature in Saint-Nazaire

Date	Current Year actual* / forecast**	last year	10 years average
Mar 27	50.7°F	53.3°F	51.2°F
Mar 28	51.3°F	53.2°F	51.1°F
Mar 29	51.4°F	52.9°F	51.2°F
Mar 30	51.5°F	52.8°F	51.3°F
Mar 31	51.7°F	52.7°F	51.4°F
Apr 1	52.4°F	52.8°F	51.7°F
Apr 2	52.7°F	53.0°F	51.9°F
Apr 3	52.9°F	52.8°F	52.0°F
Apr 4	52.8°F	52.8°F	51.9°F
Apr 5	52.7°F	52.6°F	52.1°F
Apr 6	54.2°F	52.6°F	52.3°F
Apr 7	55.0°F	53.8°F	52.3°F
Apr 8	55.2°F	53.5°F	52.6°F
Apr 9	55.4°F	54.0°F	52.8°F
Apr 10	56.1°F	54.3°F	52.9°F
Apr 11	56.1°F	54.3°F	53.0°F
Apr 12	56.4°F	55.1°F	53.2°F
Apr 13	56.7°F	56.2°F	53.5°F
Apr 14	57.1°F	56.9°F	53.9°F
Apr 15	57.5°F	58.0°F	54.4°F
Apr 16	57.7°F	57.9°F	54.5°F
Apr 17	57.8°F	57.7°F	54.6°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 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, 54.2°F in Spring, 65.7°F in Summer, and 60.5°F in Autumn.