September weather forecastLe Crotoy, France
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Le Crotoy, France, with an average temperature fluctuating between 11.6°C (52.9°F) and 18.8°C (65.8°F).Temperature
The average high-temperature during September registers at an enjoyable 18.8°C (65.8°F), closely corresponding to the preceding month. Nighttime temperatures in September average to a cool 11.6°C (52.9°F) in Le Crotoy, France.Humidity
In Le Crotoy, France, the average relative humidity in September is 80%.Rainfall
In Le Crotoy, in September, it is raining for 13.6 days, with typically 30mm (1.18") of accumulated precipitation. Throughout the year, in Le Crotoy, there are 190.2 rainfall days, and 547mm (21.54") of precipitation is accumulated.Snowfall
In Le Crotoy, snow does not fall in April through October.Sea temperature
August and September, with an average sea temperature of 17.9°C (64.2°F), are months with the warmest seawater.Note: For swimming, a surface water temperature of 17.9°C (64.2°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
Daylight
The average length of the day in September in Le Crotoy is 12h and 37min.On the first day of the month, sunrise is at 07:09 and sunset at 20:37. On the last day of September, in Le Crotoy, sunrise is at 07:52 and sunset at 19:33 CEST.
Sunshine
In September, the average sunshine is 7.3h.UV index
The average daily maximum UV index in September in Le Crotoy is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. 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
Average temperature in September
Le Crotoy, France
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (21.7°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 11.6°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 (1.8°C).
Average pressure in September
Le Crotoy, France
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is September (1017.7mbar).
The month with the lowest atmospheric pressure is November (1012.2mbar).
Average wind speed in September
Le Crotoy, France
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is August (13.4km/h).
Average humidity in September
Le Crotoy, France
- Average humidity in September: 80%
The months with the highest relative humidity are January, November and December (87%).
The month with the lowest relative humidity is August (78%).
Average rainfall in September
Le Crotoy, France
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is December (71mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Le Crotoy, France
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is April (13.5 days).
Average snowfall in September
Le Crotoy, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (29mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Le Crotoy, 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 sea temperature in September
Le Crotoy, France
- Average sea temperature in September: 17.9°C
The best months for swimming (with the highest average sea temperature) are August and September (17.9°C).
The coldest month (with the lowest average sea temperature) is March (7.9°C).
Average daylight in September /
Average sunshine in September
Le Crotoy, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 18min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Le Crotoy, France
- Average sunshine days in September: 13.5 days
The months with the most sunshine days are March and April (13.7 days).
The month with the least sunshine days is November (10.1 days).
Average UV index in September
Le Crotoy, 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
Le Crotoy, France
- Average cloud cover in September: 42
The months with the most cloud cover are January, November and December (Cloud cover 59).
The months with the least cloud cover are April and August (Cloud cover 40).
Average visibility in September
Le Crotoy, 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).
