Are you considering a trip to Luxembourg in September? Well, the weather is usually on your side with an average maximum temperature of +66°F and about 8 sunny days. Just keep in mind that there may be some rain, with an average of 7 rainy days and 64 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+66°F
Avg. max. temperature
+37°F
Min.
+90°F
Max.
64 mm
Total precipitation
75%
Avg. humidity
2 m/s
Avg. wind
8 ☀️
Sunny Days
15 ⛅️
Cloudy
7 🌦
Rainy
Our opinion: Luxembourg has good weather in September.
Average temperature in Luxembourg in September
Here are the expected maximum, average and minimum temperatures in Luxembourg for September based on the historical data.
Last Year
Historical Data
Going from a maximum of +84°F during the day to a minimum of +37°F during the night, the temperature in September averages around +66°F.
The average maximum temperature goes down 35% by the end of the month, compared with the beginning of the month, from +75°F to +59°F.
Is Luxembourg warm or cold in September?
Luxembourg is typically mild in September.
Maximum temperatures go down compared to the previous month from +73°F to +66°F. The minimum temperature also goes down from +55°F to +50°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Luxembourg:
Climate in Luxembourg in September
Luxembourg weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+73°F
+66°F
+57°F
Min. temperature
+43°F
+37°F
+25°F
Max. temperature
+99°F
+90°F
+77°F
Rainfall
64 mm
64 mm
74 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
69%
75%
82%
Air pressure
1015 HPa
1016 HPa
1015 HPa
Sunny days
9
8
5
Cloudy days
15
15
18
Rainy days
7
7
8
Snowy days
0
0
0
September weather is still as good as in August.It’s getting colder in September. From +73°F in the day, the average maximum temperature lowers to +66°F.The rainfall amount in September stays the same as in the previous month with a 64 mm of total precipitation.Humidity rises from 69% to 75%.The average wind speed doesn’t change much during September, staying around 2 m/s.The days becoming less sunny, going from 9 sunny days in August to 8 in September.
Next month (October) brings a further decline in the weather.
Wind speed in Luxembourg in September based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Luxembourg is gradually decreasing during September, going from 4 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Luxembourg based on historical data.
Last Year
Historical Data
Typically, there is a 67% chance of rain on an average day in September, with total rainfall of approximately 129 mm. The maximum amount of rainfall per day is around 31 mm, which is moderate rain.September is a pretty wet month with over 20 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Luxembourg wettest month is October, where a typical day has a 26% chance of precipitation and 74 mm of rainfall per day. February, on the other hand, is the driest month with a mere 17% chance of precipitation and 52 mm of rainfall per day.
How was the weather last September in Luxembourg?
This is the weather in Luxembourg in September 2023:
1 September
☀️
+75°F
2 September
☀️
+79°F
3 September
☀️
+73°F
4 September
☀️
+79°F
5 September
☀️
+84°F
6 September
☀️
+83°F
7 September
🌧️
+73°F
8 September
🌧️
+67°F
9 September
☁️
+65°F
10 September
🌧️
+64°F
11 September
☁️
+68°F
12 September
☀️
+76°F
13 September
☀️
+78°F
14 September
🌧️
+73°F
15 September
☁️
+65°F
16 September
☀️
+59°F
17 September
🌧️
+56°F
18 September
☀️
+58°F
19 September
☀️
+60°F
20 September
☀️
+58°F
21 September
☀️
+61°F
22 September
☀️
+66°F
23 September
☀️
+63°F
24 September
☁️
+61°F
25 September
☁️
+59°F
26 September
🌧️
+56°F
27 September
🌧️
+51°F
28 September
🌧️
+55°F
29 September
☁️
+55°F
30 September
☀️
+60°F
In September 2023 Luxembourg had 16 sunny days, 6 cloudy days, and 8 rainy days. The average maximum temperature was +66°F, with an absolute maximum of +84°F and a minimum of +50°F. The average humidity was 79%, with a maximum of 100% and a minimum of 31%. The average wind speed was 3 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Luxembourg climate has changed over the last 43 years.
The climate in Luxembourg in September has not changed that much over the last 43 years.
The average temperature was the lowest in 2001 (+60°F) and the highest in 2016 (+83°F). The driest year was 1979 with only 19 mm of rainfall, and the wettest year was 1993 with 140 mm.
FAQ
Frequently asked questions about the weather in Luxembourg in September:
Is September a good time to visit Luxembourg?
September is a really good time to go to Luxembourg. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Luxembourg.
Can you sunbathe in Luxembourg in September?
September has mild temperatures in Luxembourg. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Is Luxembourg rainy in September?
Luxembourg is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Luxembourg in September?
Usually, it’s not very sunny in Luxembourg in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Luxembourg, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.