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Sea Temperature in Grande-Synthe in September
Complete information on the sea temperature range in the English Channel in Grande-Synthe in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Grande-Synthe. 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 Grande-Synthe in September
15°C
MINIMUN
18°C
AVERAGE
21°C
MAXIMUM
Historical Data of Water Temperature in September in Grande-Synthe
Water Temperature Chart for English Channel in Grande-Synthe in September
Sea Temperature Table in Grande-Synthe in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 19°C | 19°C | 16°C | 18.0°C |
| Sep 2 | 18°C | 16°C | 17°C | 17.5°C |
| Sep 3 | 18°C | 16°C | 16°C | 17.3°C |
| Sep 4 | 18°C | 16°C | 18°C | 17.8°C |
| Sep 5 | 18°C | 17°C | 17°C | 17.8°C |
| Sep 6 | 19°C | 17°C | 18°C | 18.3°C |
| Sep 7 | 18°C | 17°C | 18°C | 18.0°C |
| Sep 8 | 19°C | 19°C | 18°C | 18.8°C |
| Sep 9 | 19°C | 19°C | 16°C | 18.3°C |
| Sep 10 | 18°C | 17°C | 19°C | 18.3°C |
| Sep 11 | 18°C | 17°C | 18°C | 18.0°C |
| Sep 12 | 18°C | 18°C | 19°C | 18.3°C |
| Sep 13 | 19°C | 17°C | 16°C | 17.8°C |
| Sep 14 | 18°C | 16°C | 16°C | 17.3°C |
| Sep 15 | 15°C | 19°C | 17°C | 17.3°C |
| Sep 16 | 16°C | 17°C | 19°C | 17.5°C |
| Sep 17 | 18°C | 17°C | 17°C | 17.3°C |
| Sep 18 | 19°C | 19°C | 17°C | 18.3°C |
| Sep 19 | 19°C | 17°C | 16°C | 17.5°C |
| Sep 20 | 19°C | 18°C | 18°C | 18.3°C |
| Sep 21 | 18°C | 19°C | 16°C | 17.5°C |
| Sep 22 | 18°C | 16°C | 18°C | 17.3°C |
| Sep 23 | 18°C | 19°C | 16°C | 17.8°C |
| Sep 24 | 19°C | 18°C | 17°C | 18.0°C |
| Sep 25 | 18°C | 19°C | 16°C | 17.5°C |
| Sep 26 | 18°C | 18°C | 17°C | 17.5°C |
| Sep 27 | 18°C | 18°C | 19°C | 18.0°C |
| Sep 28 | 18°C | 18°C | 18°C | 17.8°C |
| Sep 29 | 18°C | 16°C | 16°C | 16.8°C |
Grande-Synthe Climate and Swimming Opportunities in September
19°C
Average Day Air Temperature
11°C
Average Night Air Temperature
65 mm
Precipitation Amount per Month
11 days
Number of Rainy Days
13 hrs
Daylight
per Day
5 hrs
Sunshine
per Day
19 km/h
Average Wind Speed
82%
Average
humidity
Grande-Synthe lies within the Hauts-de-France in France. The average daytime temperature in Grande-Synthe in September is 19°C (66°F), while the nighttime average is 11°C (52°F). There are typically 11 rainy days during the month, with a total precipitation of 65 mm (2.5 inches). The daylight duration in September in Grande-Synthe is 13 hours, with an average of 5 hours of sunshine per day. The average wind speed in September is 19 km/h (12 mph), and the humidity level is around 82%.
The water temperature in Grande-Synthe 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 18°C (64°F) in the last ten days. Overall, the average sea temperature in Grande-Synthe 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 Grande-Synthe
What is the sea temperature in Grande-Synthe in September?
The water temperature in the English Channel in Grande-Synthe in September ranges from 16°C to 18°C (61°F to 64°F).
Is it possible to swim in the English Channel in Grande-Synthe in September?
The average sea temperature in Grande-Synthe in September is 18°C (64°F), and the air temperature is 19°C (66°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.