September weather forecastColmen, France
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Colmen, France, with an average temperature fluctuating between 9.5°C (49.1°F) and 19.2°C (66.6°F).Temperature
September heralds a minor drop in average high-temperature, sliding from August's moderately hot 23.3°C (73.9°F) to an enjoyable 19.2°C (66.6°F). In September, Colmen experiences a temperature dip to an average of 9.5°C (49.1°F) at night.Humidity
In September, the average relative humidity is 79%.Rainfall
In September, the rain falls for 12.2 days. Throughout September, 37mm (1.46") of precipitation is accumulated. Throughout the year, there are 171 rainfall days, and 566mm (22.28") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Colmen.Daylight
In September, the average length of the day is 12h and 36min.On the first day of September, sunrise is at 06:50 and sunset at 20:16. On the last day of the month, sunrise is at 07:32 and sunset at 19:14 CEST.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 3 in September translates into this advice:
Exercise prevention - Warding off sunburn is urged. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Colmen, 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
Colmen, 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
Colmen, 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
Colmen, 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
Colmen, 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
Colmen, 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
Colmen, 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
Colmen, 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
Colmen, France
- Average daylight in September: 12h and 36min
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 18min
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
Colmen, 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
Colmen, 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
Colmen, 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
Colmen, 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).
