Sea Temperature in La Trinité-sur-Mer in September

Complete information on the sea temperature range in the Bay of Biscay in La Trinité-sur-Mer in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in La Trinité-sur-Mer. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in La Trinité-sur-Mer in September

15°C

MINIMUN

18°C

AVERAGE

21°C

MAXIMUM

Historical Data of Water Temperature in September in La Trinité-sur-Mer

Water Temperature Chart for Bay of Biscay in La Trinité-sur-Mer in September

Sea Temperature Table in La Trinité-sur-Mer in September Over the Past Years

Day	2024	2023	2022	Average
Sep 1	18°C	18°C	18°C	18.0°C
Sep 2	18°C	18°C	18°C	18.0°C
Sep 3	18°C	18°C	18°C	18.0°C
Sep 4	19°C	18°C	18°C	18.3°C
Sep 5	18°C	19°C	18°C	18.3°C
Sep 6	19°C	18°C	17°C	18.0°C
Sep 7	18°C	19°C	17°C	17.8°C
Sep 8	19°C	18°C	18°C	18.0°C
Sep 9	19°C	19°C	17°C	18.3°C
Sep 10	19°C	18°C	17°C	18.0°C
Sep 11	19°C	19°C	16°C	17.8°C
Sep 12	18°C	19°C	16°C	17.5°C
Sep 13	18°C	18°C	17°C	17.5°C
Sep 14	18°C	18°C	16°C	17.3°C
Sep 15	19°C	19°C	16°C	17.3°C
Sep 16	19°C	19°C	16°C	17.5°C
Sep 17	18°C	19°C	16°C	17.3°C
Sep 18	18°C	19°C	16°C	17.0°C
Sep 19	19°C	19°C	16°C	17.5°C
Sep 20	18°C	19°C	16°C	17.3°C
Sep 21	18°C	19°C	16°C	17.3°C
Sep 22	18°C	18°C	17°C	17.3°C
Sep 23	18°C	19°C	16°C	17.3°C
Sep 24	18°C	18°C	16°C	17.0°C
Sep 25	18°C	18°C	16°C	16.8°C
Sep 26	18°C	18°C	16°C	17.0°C
Sep 27	17°C	17°C	16°C	16.5°C
Sep 28	18°C	16°C	19°C	17.3°C
Sep 29	17°C	16°C	16°C	16.0°C

La Trinité-sur-Mer Climate and Swimming Opportunities in September

20°C

Average Day Air Temperature

14°C

Average Night Air Temperature

59 mm

Precipitation Amount per Month

10 days

Number of Rainy Days

12 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

17 km/h

Average Wind Speed

81%

Average
humidity

La Trinité-sur-Mer lies within the Brittany in France. The average daytime temperature in La Trinité-sur-Mer in September is 20°C (67°F), while the nighttime average is 14°C (56°F). There are typically 10 rainy days during the month, with a total precipitation of 59 mm (2.3 inches). The daylight duration in September in La Trinité-sur-Mer is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 17 km/h (11 mph), and the humidity level is around 81%.

The water temperature in La Trinité-sur-Mer in September ranges from 16°C to 18°C (61°F to 64°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 18°C (64°F) by mid-September and reaching 17°C (63°F) in the last ten days. Overall, the average sea temperature in La Trinité-sur-Mer for September is 18°C (64°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in September in Nearby Cities

Frequently Asked Questions About Water Temperatures in September in La Trinité-sur-Mer

What is the sea temperature in La Trinité-sur-Mer in September?

The water temperature in the Bay of Biscay in La Trinité-sur-Mer in September ranges from 16°C to 18°C (61°F to 64°F).

Is it possible to swim in the Bay of Biscay in La Trinité-sur-Mer in September?

The average sea temperature in La Trinité-sur-Mer in September is 18°C (64°F), and the air temperature is 20°C (67°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.