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Luxembourg weather in September

Weather in Luxembourg: September

Average day temperature: 65.5°F
Average night temperature: 52.5°F
Number of sunny days: 13 days
Day length: 11.7 - 13.5 hours
Number of rainy days: 3 days
Precipitation totals: 1.6 in.

Air temperature in September, °F

Show year:
2025
2024
2023

The highest day temperature during September of 2025 was 75°F. At the same time the lowest night temperature was 43°F. Daily and nightly averages during September were 60.8°F and 51.9°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Luxembourg in September is 1.8 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 6.9 mph It makes September one of the least windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 6.9.

Best time for vacation in Luxembourg

Sunniest months:
August 13 days
July 13 days
September 13 days
Warmest months:
August 72.5 °F
July 71.8 °F
June 68.6 °F
Coldest months:
January 37.7 °F
December 40.6 °F
February 40.8 °F
Rainiest months:
December 5 days
May 5 days
June 5 days
Windiest months:
February 9.7 mph
January 9.5 mph
December 9.3 mph

Luxembourg on a weather map

Luxembourg
+54°F
NE 11 mph
Feels like: +50°F
Precip.: 65%
Places in Luxembourg:
Name
°F
+54°F
+54°F
+54°F
+54°F
+54°F
+54°F
+54°F
24 Hours Forecast
Luxembourg
Local time: 16:23
April 04, saturday
1800
54°F
NE
10 mph
2100
50°F
NE
9 mph
April 05, sunday
0000
46°F
N
8 mph
0300
48°F
NE
11 mph
0600
48°F
NE
13 mph
0900
50°F
NE
14 mph
1200
48°F
NE
12 mph
1500
50°F
E
14 mph
Units of measurement: °C / °F