Search for cities, countries, lakes and rivers
Sea Temperature in Knokke-Heist in September
Complete information on the sea temperature range in the North Sea in Knokke-Heist in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Knokke-Heist. 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 Knokke-Heist in September
16°C
MINIMUN
18.5°C
AVERAGE
21°C
MAXIMUM
Historical Data of Water Temperature in September in Knokke-Heist
Water Temperature Chart for North Sea in Knokke-Heist in September
Sea Temperature Table in Knokke-Heist in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 19°C | 20°C | 17°C | 18.8°C |
| Sep 2 | 18°C | 19°C | 17°C | 18.3°C |
| Sep 3 | 19°C | 19°C | 20°C | 19.3°C |
| Sep 4 | 18°C | 20°C | 16°C | 18.3°C |
| Sep 5 | 18°C | 20°C | 17°C | 18.8°C |
| Sep 6 | 19°C | 20°C | 16°C | 18.5°C |
| Sep 7 | 19°C | 19°C | 19°C | 19.0°C |
| Sep 8 | 19°C | 19°C | 16°C | 18.5°C |
| Sep 9 | 19°C | 19°C | 17°C | 18.8°C |
| Sep 10 | 19°C | 19°C | 19°C | 19.3°C |
| Sep 11 | 20°C | 19°C | 16°C | 18.8°C |
| Sep 12 | 19°C | 18°C | 19°C | 19.0°C |
| Sep 13 | 19°C | 18°C | 16°C | 18.0°C |
| Sep 14 | 16°C | 19°C | 18°C | 18.0°C |
| Sep 15 | 16°C | 19°C | 17°C | 17.8°C |
| Sep 16 | 17°C | 19°C | 18°C | 18.3°C |
| Sep 17 | 19°C | 18°C | 16°C | 17.5°C |
| Sep 18 | 20°C | 19°C | 19°C | 18.8°C |
| Sep 19 | 19°C | 19°C | 19°C | 18.5°C |
| Sep 20 | 19°C | 19°C | 19°C | 18.8°C |
| Sep 21 | 18°C | 19°C | 19°C | 18.3°C |
| Sep 22 | 18°C | 19°C | 16°C | 17.5°C |
| Sep 23 | 18°C | 19°C | 19°C | 18.5°C |
| Sep 24 | 18°C | 19°C | 20°C | 18.8°C |
| Sep 25 | 18°C | 19°C | 19°C | 18.5°C |
| Sep 26 | 18°C | 18°C | 20°C | 18.5°C |
| Sep 27 | 18°C | 18°C | 20°C | 18.5°C |
| Sep 28 | 18°C | 18°C | 19°C | 18.3°C |
| Sep 29 | 18°C | 18°C | 19°C | 18.0°C |
Knokke-Heist Climate and Swimming Opportunities in September
19°C
Average Day Air Temperature
12°C
Average Night Air Temperature
71 mm
Precipitation Amount per Month
11 days
Number of Rainy Days
13 hrs
Daylight
per Day
5 hrs
Sunshine
per Day
20 km/h
Average Wind Speed
81%
Average
humidity
Knokke-Heist lies within in Belgium. The average daytime temperature in Knokke-Heist in September is 19°C (66°F), while the nighttime average is 12°C (54°F). There are typically 11 rainy days during the month, with a total precipitation of 71 mm (2.8 inches). The daylight duration in September in Knokke-Heist is 13 hours, with an average of 5 hours of sunshine per day. The average wind speed in September is 20 km/h (12 mph), and the humidity level is around 81%.
The water temperature in Knokke-Heist in September ranges from 17°C to 19°C (63°F to 66°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 Knokke-Heist for September is 19°C (66°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 Knokke-Heist
What is the sea temperature in Knokke-Heist in September?
The water temperature in the North Sea in Knokke-Heist in September ranges from 17°C to 19°C (63°F to 66°F).
Is it possible to swim in the North Sea in Knokke-Heist in September?
The average sea temperature in Knokke-Heist in September is 19°C (66°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.