The highest day temperature in September 2026 was 82°F. The lowest night temperature was 55°F. The average values for day and night temperatures during September were 72.0°F и 61.3°F respectivly.

The average sea surface temperature in September 2026 for Kortrijk was 68.3°F. The maximum and minimum values were 65.8°F and 70.2°F respectively.

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in September for Kortrijk is 1.1 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 8.3 mph. It makes September one of the most windless months of the year for Kortrijk.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Kortrijk in September is 6.9 hours.