Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
As August transitions into September, Merten sees a gentle drop in the average high-temperature, transitioning from a warm 23.3°C (73.9°F) to an enjoyable 19.2°C (66.6°F). Merten's temperature tends to fall to an average low of 9.5°C (49.1°F) during the nights of September.Humidity
The average relative humidity in September in Merten is 79%.Rainfall
In Merten, France, in September, during 12.2 rainfall days, 37mm (1.46") of precipitation is typically accumulated. In Merten, France, during the entire year, the rain falls for 171 days and collects up to 566mm (22.28") of precipitation.Snowfall
June through September are months without snowfall in Merten.Daylight
In Merten, the average length of the day in September is 12h and 36min.On the first day of the month, sunrise is at 06:50 and sunset at 20:16. On the last day of September, sunrise is at 07:32 and sunset at 19:13 CEST.
Sunshine
In Merten, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Merten, France, is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, an average UV index of 3 transforms into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Merten in September?
What is the average humidity in September in Merten?
How much does it rain in Merten in September?
When it does not snow in Merten?
Does it snow in Merten in September?
What is the average length of the day in September in Merten?
What time are sunrise and sunset in September in Merten?
How long on average sun shines in September in Merten?
What is the UV index intensity in September in Merten?
Average temperature in September
Merten, France
- Average high temperature in September: 19.2°C
The warmest month (with the highest average high temperature) is July (23.6°C).
The month with the lowest average high temperature is January (3.6°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).
Average pressure in September
Merten, France
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1018.8mbar).
The month with the lowest atmospheric pressure is November (1014.5mbar).
Average wind speed in September
Merten, France
- Average wind speed in September: 9.7km/h
The windiest month (with the highest average wind speed) is February (14.5km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).
Average humidity in September
Merten, France
- Average humidity in September: 79%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Merten, France
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is December (66mm).
The driest month (with the least rainfall) is April (33mm).
Average rainfall days in September
Merten, France
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Merten, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (76mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Merten, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Merten, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in September
Merten, France
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is December (10.4 days).
Average UV index in September
Merten, France
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Merten, France
- Average cloud cover in September: 38
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Merten, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January, February, September, October, November and December (8km).
