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Sea Temperature in Guéthary in September
Complete information on the sea temperature range in the Bay of Biscay in Guéthary in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Guéthary. 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 Guéthary in September
17°C
MINIMUN
20.5°C
AVERAGE
24°C
MAXIMUM
Historical Data of Water Temperature in September in Guéthary
Water Temperature Chart for Bay of Biscay in Guéthary in September
Sea Temperature Table in Guéthary in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 22°C | 22°C | 22°C | 22.0°C |
| Sep 2 | 23°C | 22°C | 22°C | 22.3°C |
| Sep 3 | 21°C | 22°C | 22°C | 22.0°C |
| Sep 4 | 22°C | 22°C | 22°C | 22.0°C |
| Sep 5 | 22°C | 21°C | 21°C | 21.5°C |
| Sep 6 | 21°C | 21°C | 21°C | 21.3°C |
| Sep 7 | 22°C | 21°C | 21°C | 21.3°C |
| Sep 8 | 22°C | 21°C | 21°C | 21.5°C |
| Sep 9 | 22°C | 21°C | 21°C | 21.5°C |
| Sep 10 | 22°C | 21°C | 21°C | 21.3°C |
| Sep 11 | 21°C | 20°C | 20°C | 20.5°C |
| Sep 12 | 21°C | 20°C | 20°C | 20.5°C |
| Sep 13 | 22°C | 20°C | 20°C | 20.8°C |
| Sep 14 | 22°C | 20°C | 20°C | 20.5°C |
| Sep 15 | 22°C | 20°C | 20°C | 20.8°C |
| Sep 16 | 22°C | 20°C | 20°C | 20.5°C |
| Sep 17 | 21°C | 19°C | 19°C | 19.8°C |
| Sep 18 | 22°C | 19°C | 19°C | 20.0°C |
| Sep 19 | 21°C | 19°C | 19°C | 19.8°C |
| Sep 20 | 22°C | 19°C | 19°C | 19.8°C |
| Sep 21 | 21°C | 19°C | 19°C | 19.8°C |
| Sep 22 | 20°C | 19°C | 19°C | 19.5°C |
| Sep 23 | 20°C | 18°C | 18°C | 19.0°C |
| Sep 24 | 20°C | 18°C | 18°C | 19.3°C |
| Sep 25 | 20°C | 18°C | 18°C | 18.8°C |
| Sep 26 | 21°C | 18°C | 18°C | 19.0°C |
| Sep 27 | 20°C | 18°C | 18°C | 18.8°C |
| Sep 28 | 21°C | 18°C | 18°C | 19.3°C |
| Sep 29 | 20°C | 17°C | 17°C | 18.3°C |
Guéthary Climate and Swimming Opportunities in September
23°C
Average Day Air Temperature
15°C
Average Night Air Temperature
94 mm
Precipitation Amount per Month
10 days
Number of Rainy Days
12 hrs
Daylight
per Day
6 hrs
Sunshine
per Day
12 km/h
Average Wind Speed
74%
Average
humidity
Guéthary lies within the Nouvelle-Aquitaine in France. The average daytime temperature in Guéthary in September is 23°C (74°F), while the nighttime average is 15°C (59°F). There are typically 10 rainy days during the month, with a total precipitation of 94 mm (3.7 inches). The daylight duration in September in Guéthary is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 12 km/h (7 mph), and the humidity level is around 74%.
The water temperature in Guéthary in September ranges from 18°C to 22°C (64°F to 72°F). At the beginning of the month, the average temperature is around 22°C (72°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 Guéthary 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 Guéthary
What is the sea temperature in Guéthary in September?
The water temperature in the Bay of Biscay in Guéthary in September ranges from 18°C to 22°C (64°F to 72°F).
Is it possible to swim in the Bay of Biscay in Guéthary in September?
The average sea temperature in Guéthary 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.