Clervaux Weather in September
Clervaux in September sees pleasant temperatures, with highs around 19°C (66°F) and overnight lows of 9°C (48°F). Rainfall is fairly high at around 77 mm (3 in) on average, so pack waterproofs just in case.
Rainfall in Clervaux in September
Expect around 16 days of rain based on historical data, with 77 mm (3 in) average. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Clervaux in September
Daytime temperatures in Clervaux reach 19°C (66°F) in September, dropping to 9°C (48°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Clervaux in September
With about 160 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Clervaux.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Luxembourg, check out our Clervaux's climate page.
Clervaux Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
19°C (66°F)
Chance of Rain
52%
Precipitation
77 mm (3 in)
Rainy days
16 days
Humidity
88% *
Sunshine
160 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Clervaux typically drop from around 19°C (66°F) at the start of September to approximately 16°C (61°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°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 for Clervaux in September
Browse day-by-day weather records for Clervaux spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Clervaux historical weather extremes in September
According to our 49 years of weather records for Clervaux, the following extremes were recorded between 1976 and 2025.
- The hottest September day on record in Clervaux reached 32°C (90°F) (September 15, 2020).
- On September 25, 2025, Clervaux saw its coldest September day with temperatures maxing out at 8°C (46°F).
- The lowest overnight temperature recorded in September was 0°C (32°F) (September 6, 1993).
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
What to Wear in Clervaux in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Clervaux in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Luxembourg, check out our Clervaux's climate page.
Temperature Rainfall Sunshine Humidity
See the full Clervaux climate overview or explore weather in Luxembourg.
