Sea Temperature in Saint-Jouan-des-Guérets in September

Complete information on the sea temperature range in the Celtic Sea in Saint-Jouan-des-Guérets in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Saint-Jouan-des-Guérets. 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 Saint-Jouan-des-Guérets in September

16°C

MINIMUN

18.5°C

AVERAGE

21°C

MAXIMUM

Historical Data of Water Temperature in September in Saint-Jouan-des-Guérets

Water Temperature Chart for Celtic Sea in Saint-Jouan-des-Guérets in September

Sea Temperature Table in Saint-Jouan-des-Guérets in September Over the Past Years

Day	2024	2023	2022	Average
Sep 1	18°C	19°C	18°C	18.5°C
Sep 2	18°C	19°C	18°C	18.3°C
Sep 3	18°C	19°C	18°C	18.8°C
Sep 4	19°C	19°C	18°C	18.8°C
Sep 5	19°C	19°C	18°C	18.8°C
Sep 6	19°C	19°C	18°C	18.8°C
Sep 7	19°C	19°C	18°C	18.8°C
Sep 8	19°C	19°C	18°C	18.8°C
Sep 9	18°C	18°C	17°C	18.0°C
Sep 10	18°C	18°C	17°C	18.0°C
Sep 11	19°C	18°C	17°C	18.3°C
Sep 12	18°C	18°C	17°C	18.0°C
Sep 13	18°C	19°C	17°C	18.0°C
Sep 14	18°C	19°C	17°C	18.0°C
Sep 15	19°C	19°C	17°C	18.3°C
Sep 16	18°C	19°C	17°C	18.0°C
Sep 17	18°C	19°C	17°C	17.8°C
Sep 18	18°C	19°C	17°C	17.8°C
Sep 19	19°C	18°C	17°C	17.8°C
Sep 20	19°C	19°C	17°C	18.0°C
Sep 21	19°C	19°C	17°C	18.0°C
Sep 22	18°C	18°C	17°C	17.5°C
Sep 23	19°C	19°C	17°C	18.3°C
Sep 24	19°C	18°C	17°C	18.0°C
Sep 25	18°C	18°C	17°C	17.8°C
Sep 26	18°C	18°C	17°C	17.8°C
Sep 27	19°C	18°C	17°C	17.8°C
Sep 28	19°C	18°C	17°C	17.8°C
Sep 29	17°C	18°C	17°C	17.3°C

Saint-Jouan-des-Guérets Climate and Swimming Opportunities in September

20°C

Average Day Air Temperature

13°C

Average Night Air Temperature

55 mm

Precipitation Amount per Month

10 days

Number of Rainy Days

12 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

19 km/h

Average Wind Speed

80%

Average
humidity

Saint-Jouan-des-Guérets lies within the Brittany in France. The average daytime temperature in Saint-Jouan-des-Guérets in September is 20°C (67°F), while the nighttime average is 13°C (55°F). There are typically 10 rainy days during the month, with a total precipitation of 55 mm (2.1 inches). The daylight duration in September in Saint-Jouan-des-Guérets is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 19 km/h (12 mph), and the humidity level is around 80%.

The water temperature in Saint-Jouan-des-Guérets in September ranges from 17°C to 18°C (63°F to 64°F). At the beginning of the month, the average temperature is around 19°C (66°F), shifting to 18°C (64°F) by mid-September and reaching 18°C (64°F) in the last ten days. Overall, the average sea temperature in Saint-Jouan-des-Guérets 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 Saint-Jouan-des-Guérets

What is the sea temperature in Saint-Jouan-des-Guérets in September?

The water temperature in the Celtic Sea in Saint-Jouan-des-Guérets in September ranges from 17°C to 18°C (63°F to 64°F).

Is it possible to swim in the Celtic Sea in Saint-Jouan-des-Guérets in September?

The average sea temperature in Saint-Jouan-des-Guérets 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.