September weather forecastDahl, Luxembourg
September
Weather in September
September, the first month of the autumn in Dahl, is still a comfortable month, with temperature in the range of an average high of 17.4°C (63.3°F) and an average low of 7.9°C (46.2°F).Temperature
With the beginning of September, the average high-temperature shows a small decrease, transitioning from an agreeable 20.9°C (69.6°F) in August to an enjoyable 17.4°C (63.3°F). Throughout September, Dahl records an average temperature of 7.9°C (46.2°F) at night.Humidity
In Dahl, Luxembourg, the average relative humidity in September is 84%.Rainfall
In Dahl, in September, it is raining for 14.1 days, with typically 38mm (1.5") of accumulated precipitation. Throughout the year, in Dahl, there are 189.4 rainfall days, and 645mm (25.39") of precipitation is accumulated.Snowfall
In Dahl, Luxembourg, snow does not fall in June through September.Daylight
In Dahl, Luxembourg, the average length of the day in September is 12h and 37min.On the first day of September in Dahl, sunrise is at 06:52 and sunset at 20:19. On the last day of the month, sunrise is at 07:35 and sunset at 19:16 CEST.
Sunshine
In Dahl, Luxembourg, the average sunshine in September is 7.2h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dahl, Luxembourg
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (2.5°C).
- Average low temperature in September: 7.9°C
The months with the highest average low temperature are July and August (11.1°C).
The coldest months (with the lowest average low temperature) are January and February (-1.8°C).
Average pressure in September
Dahl, Luxembourg
- Average pressure in September: 1017.8mbar
The months with the highest atmospheric pressure are September and December (1017.8mbar).
The month with the lowest atmospheric pressure is November (1013.8mbar).
Average wind speed in September
Dahl, Luxembourg
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is February (16.2km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in September
Dahl, Luxembourg
- Average humidity in September: 84%
The month with the highest relative humidity is December (93%).
The month with the lowest relative humidity is April (79%).
Average rainfall in September
Dahl, Luxembourg
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is December (76mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days in September
Dahl, Luxembourg
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in September
Dahl, Luxembourg
- Average snowfall in September: 0mm
The month with the highest snowfall is February (90mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Dahl, Luxembourg
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dahl, Luxembourg
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is July (Average sunshine: 8h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in September
Dahl, Luxembourg
- Average sunshine days in September: 13 days
The month with the most sunshine days is September (13 days).
The month with the least sunshine days is June (7.2 days).
Average UV index in September
Dahl, Luxembourg
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Dahl, Luxembourg
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 44).
Average visibility in September
Dahl, Luxembourg
- Average visibility in September: 8km
The month with the highest visibility is April (9km).
The months with the lowest visibility are January, October, November and December (7km).
