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Sea Temperature in Gujan-Mestras in September
Complete information on the sea temperature range in the Bay of Biscay in Gujan-Mestras in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Gujan-Mestras. 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 Gujan-Mestras in September
16°C
MINIMUN
20°C
AVERAGE
24°C
MAXIMUM
Historical Data of Water Temperature in September in Gujan-Mestras
Water Temperature Chart for Bay of Biscay in Gujan-Mestras in September
Sea Temperature Table in Gujan-Mestras in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 22°C | 23°C | 21°C | 21.8°C |
| Sep 2 | 22°C | 23°C | 21°C | 21.8°C |
| Sep 3 | 21°C | 22°C | 21°C | 21.5°C |
| Sep 4 | 21°C | 22°C | 21°C | 21.5°C |
| Sep 5 | 22°C | 22°C | 20°C | 21.3°C |
| Sep 6 | 22°C | 22°C | 20°C | 21.5°C |
| Sep 7 | 22°C | 22°C | 20°C | 21.3°C |
| Sep 8 | 21°C | 22°C | 20°C | 21.0°C |
| Sep 9 | 21°C | 22°C | 20°C | 20.8°C |
| Sep 10 | 22°C | 21°C | 20°C | 21.0°C |
| Sep 11 | 22°C | 22°C | 19°C | 20.8°C |
| Sep 12 | 22°C | 22°C | 19°C | 20.8°C |
| Sep 13 | 22°C | 22°C | 19°C | 20.8°C |
| Sep 14 | 22°C | 21°C | 19°C | 20.5°C |
| Sep 15 | 22°C | 22°C | 19°C | 20.8°C |
| Sep 16 | 21°C | 22°C | 19°C | 20.3°C |
| Sep 17 | 21°C | 22°C | 18°C | 20.0°C |
| Sep 18 | 21°C | 22°C | 18°C | 20.0°C |
| Sep 19 | 21°C | 22°C | 18°C | 19.8°C |
| Sep 20 | 21°C | 21°C | 18°C | 19.5°C |
| Sep 21 | 20°C | 22°C | 18°C | 19.8°C |
| Sep 22 | 21°C | 21°C | 18°C | 19.8°C |
| Sep 23 | 20°C | 22°C | 17°C | 19.5°C |
| Sep 24 | 20°C | 22°C | 17°C | 19.5°C |
| Sep 25 | 20°C | 21°C | 17°C | 19.0°C |
| Sep 26 | 20°C | 21°C | 17°C | 19.0°C |
| Sep 27 | 20°C | 20°C | 17°C | 19.0°C |
| Sep 28 | 21°C | 21°C | 17°C | 19.5°C |
| Sep 29 | 21°C | 20°C | 16°C | 18.8°C |
Gujan-Mestras Climate and Swimming Opportunities in September
23°C
Average Day Air Temperature
13°C
Average Night Air Temperature
76 mm
Precipitation Amount per Month
10 days
Number of Rainy Days
12 hrs
Daylight
per Day
6 hrs
Sunshine
per Day
13 km/h
Average Wind Speed
76%
Average
humidity
Gujan-Mestras lies within the Nouvelle-Aquitaine in France. The average daytime temperature in Gujan-Mestras in September is 23°C (74°F), while the nighttime average is 13°C (56°F). There are typically 10 rainy days during the month, with a total precipitation of 76 mm (3.0 inches). The daylight duration in September in Gujan-Mestras is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 13 km/h (8 mph), and the humidity level is around 76%.
The water temperature in Gujan-Mestras in September ranges from 18°C to 21°C (64°F to 70°F). At the beginning of the month, the average temperature is around 21°C (70°F), shifting to 21°C (70°F) by mid-September and reaching 19°C (66°F) in the last ten days. Overall, the average sea temperature in Gujan-Mestras for September is 20°C (68°F). Very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.
Sea Temperature in September in Nearby Cities
Frequently Asked Questions About Water Temperatures in September in Gujan-Mestras
What is the sea temperature in Gujan-Mestras in September?
The water temperature in the Bay of Biscay in Gujan-Mestras in September ranges from 18°C to 21°C (64°F to 70°F).
Is it possible to swim in the Bay of Biscay in Gujan-Mestras in September?
The average sea temperature in Gujan-Mestras in September is 20°C (68°F), and the air temperature is 23°C (74°F), so very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.