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Luxembourg
The weather in September in Altwies
Looking for great weather? September is a good time to be in Altwies. The temperatures are nice, and there’s not too much rain.
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Altwies, Luxembourg. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Daily weather in September for Altwies
Click on any day in September to get detailed info about the usual weather on that day in Altwies. Check out the historical temperatures and precipitation over the past 10 years on this day.
Average temperatures
It's pleasantly warm in September in Altwies with an average temperature of 21°C. Temperatures this month range from a low of 18°C to a high of 25°C. At night, you can expect temperatures between 8°C and 14°C.
Temperature records
With 34°C in 2020, Altwies reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 11°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 18°C.
Rainfall amount
In September, there is an average of 49 mm of precipitation, spread over 8 days. The wind speed is around 3 Bft, mostly coming from the South.
September weather comparison
| Altwies | New York | |
|---|---|---|
| Average temperature | 21°C | 27°C |
| Max. temperature | 25°C | 31°C |
| Min. temperature | 8°C | -5°C |
| Total precipitation | 49 mm | 57 mm |
| Rainy days | 8 days | 9 days |
Start of September
The month of September starts in Altwies with warm temps, averaging around 23°C during the day and nights around 13°C.
Mid September
By mid-September, daytime temps stay steady at around 23°C, with nights around 12°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Altwies is around 19°C, while nighttime temps are about 10°C. A shower might pop up, but overall, the weather will be dry and sunny.
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Altwies for all months and discover the best travel time
Curious about the weather in other parts of Luxembourg? Check out the climate and weather for spots like Luxembourg, Luxemburgse Ardennen, Little Switzerland, or explore other destinations in Luxembourg.
Temperature charts
These charts show the average temperatures in September in Altwies, Luxembourg. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Altwies
Temperature in September in Altwies over the years
Precipitation charts
These charts show the average amount of precipitation in September in Altwies, Luxembourg. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Altwies
Total precipitation in September in Altwies over the years
Daily UV index in September in Altwies
This chart shows the average daily UV index in September in Altwies, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Altwies
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Average weather in Altwies by month
Click on a month below to see detailed weather info for Altwies. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.