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Dudelange Weather in September
September in Dudelange sees daytime temperatures around 20°C (68°F) and lows of 10°C (50°F) at night. With around 70 mm (2.8 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Dudelange in September
The climate data from previous years indicates about 13 days of rain, averaging 70 mm (2.8 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Dudelange in September
September in Dudelange is generally excellent, with days reaching 20°C (68°F) and nights settling around 10°C (50°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Dudelange in September
The city usually sees around 172 hours of sunlight, indicating a moderately sunny period.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Dudelange.
Dudelange Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
42%
Precipitation
70 mm (2.8 in)
Rainy days
13 days
Humidity
76% *
Sunshine
172 hours *
Percentage Sunshine
42% *
* Data from: Luxembourg, Luxembourg (17 KM, 11 Miles).
Dudelange Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dudelange - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Dudelange typically drop from around 20°C (68°F) at the start of September to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 12°C (54°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Dudelange in September
Browse day-by-day weather records for Dudelange spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dudelange historical weather extremes in September
Based on 50 years of weather observations in Dudelange between 1976 and 2026, these are the recorded extremes.
- On September 15, 2020, temperatures climbed to 33°C (91°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 30, 1978.
- Dudelange registered its coldest September night on September 20, 1978, with temperatures dropping to 2°C (36°F).
Best Places in Luxembourg in September
Find out more about the weather in Luxembourg and which places have the best travel conditions in this month. See all of Luxembourg in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Dudelange in September
For Dudelange in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Dudelange in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Swimming6/10 -
Cycling10/10 -
Walking10/10 -
Camping8/10 -
Outdoor sports10/10
Dudelange 3-Day Forecast
More climate data for Dudelange
Temperature Rainfall Sunshine Humidity
See the full Dudelange climate overview or explore weather in Luxembourg.
Popular in September
Where to go in September - average daytime high across popular destinations.
Mondorf-les-Bains
20°C (68°F) Remich20°C (68°F) Luxembourg20°C (68°F) Berdorf20°C (68°F) Vianden19°C (66°F) Echternach20°C (68°F) Clervaux19°C (66°F) Enscherange19°C (66°F) Bucket list
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