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The weather in September in Mersch
Looking for great weather? September is a good time to be in Mersch. 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 Mersch, 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 Mersch
Click on any day in September to get detailed info about the usual weather on that day in Mersch. Check out the historical temperatures and precipitation over the past 10 years on this day.
Average temperatures
It's pleasantly warm in September in Mersch with an average temperature of 21°C. Temperatures this month range from a low of 17°C to a high of 24°C. At night, you can expect temperatures between 9°C and 14°C.
Temperature records
With 33°C in 2020, Mersch reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 10°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 19°C.
Rainfall amount
In September, there is an average of 47 mm of precipitation, spread over 8 days. The wind speed is around 4 Bft, mostly coming from the South.
September weather comparison
| Mersch | New York | |
|---|---|---|
| Average temperature | 21°C | 27°C |
| Max. temperature | 24°C | 31°C |
| Min. temperature | 9°C | -5°C |
| Total precipitation | 47 mm | 57 mm |
| Rainy days | 8 days | 9 days |
Start of September
The month of September starts in Mersch with warm temps, averaging around 22°C during the day and nights around 13°C.
Mid September
By mid-September, daytime temps stay steady at around 22°C, with nights around 13°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 Mersch 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.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Mersch 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 Mersch, Luxembourg. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Mersch
Temperature in September in Mersch over the years
Precipitation charts
These charts show the average amount of precipitation in September in Mersch, 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 Mersch
Total precipitation in September in Mersch over the years
Daily UV index in September in Mersch
This chart shows the average daily UV index in September in Mersch, 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 Mersch
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Average weather in Mersch by month
Click on a month below to see detailed weather info for Mersch. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.