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
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from an agreeable 22.8°C (73°F) in August to a comfortable 19.6°C (67.3°F). Throughout September, Calonne-sur-la-Lys's nights cool down to an average of 11.4°C (52.5°F).Humidity
In Calonne-sur-la-Lys, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall in Calonne-sur-la-Lys. Rain falls for 10.4 days and accumulates 18mm (0.71") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Calonne-sur-la-Lys, France, the average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 07:04 and sunset at 20:34. On the last day of the month, sunrise is at 07:49 and sunset at 19:29 CEST.
Sunshine
In Calonne-sur-la-Lys, the average sunshine in September is 7.2h.UV index
In Calonne-sur-la-Lys, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Exercise prevention - Protecting skin and eyes from harm is required. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Calonne-sur-la-Lys?
What is the average humidity in September in Calonne-sur-la-Lys?
What is the driest month in Calonne-sur-la-Lys?
How many days does it rain in September in Calonne-sur-la-Lys?
When it does not snow in Calonne-sur-la-Lys?
What is the average length of the day in September in Calonne-sur-la-Lys?
When is the sunrise / sunset in September in Calonne-sur-la-Lys?
How long on average sun shines in September in Calonne-sur-la-Lys?
How high is the UV index in September in Calonne-sur-la-Lys?
Average temperature in September
Calonne-sur-la-Lys, France
- Average high temperature in September: 19.6°C
The warmest months (with the highest average high temperature) are July and August (22.8°C).
The month with the lowest average high temperature is January (5.7°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (1.2°C).
Average pressure in September
Calonne-sur-la-Lys, France
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Calonne-sur-la-Lys, France
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is August (12.5km/h).
Average humidity in September
Calonne-sur-la-Lys, France
- Average humidity in September: 77%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Calonne-sur-la-Lys, France
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is December (49mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in September
Calonne-sur-la-Lys, France
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is September (10.4 days).
Average snowfall in September
Calonne-sur-la-Lys, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (30mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Calonne-sur-la-Lys, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Calonne-sur-la-Lys, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Calonne-sur-la-Lys, France
- Average sunshine days in September: 17 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is January (11.3 days).
Average UV index in September
Calonne-sur-la-Lys, France
- Average UV index in September: 4
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
Calonne-sur-la-Lys, France
- Average cloud cover in September: 44
The months with the most cloud cover are January and November (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
Calonne-sur-la-Lys, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
