September weather forecastLe Tréhou, France
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Le Tréhou, France, with an average temperature varying between 19°C (66.2°F) and 11.6°C (52.9°F).Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still comfortable 19°C (66.2°F) from August's 19.9°C (67.8°F). Le Tréhou sees an average low-temperature of 11.6°C (52.9°F) during September.Humidity
In Le Tréhou, the average relative humidity in September is 82%.Rainfall
The month with the least rainfall in Le Tréhou is September, when the rain falls for 14.4 days and typically collects 29mm (1.14") of precipitation.Snowfall
In Le Tréhou, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 07:34 and sunset at 20:57. On the last day of September, in Le Tréhou, sunrise is at 08:15 and sunset at 19:57 CEST.
Sunshine
The average sunshine in September in Le Tréhou is 6.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding the Sun during its peak radiation time around midday is a healthy practice. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Le Tréhou, France
- Average high temperature in September: 19°C
The warmest month (with the highest average high temperature) is July (20.1°C).
The month with the lowest average high temperature is January (9°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is February (4.8°C).
Average pressure in September
Le Tréhou, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is September (1018.3mbar).
The month with the lowest atmospheric pressure is November (1012mbar).
Average wind speed in September
Le Tréhou, France
- Average wind speed in September: 15.3km/h
The windiest months (with the highest average wind speed) are February and December (21.7km/h).
The calmest months (with the lowest average wind speed) are July and August (14.8km/h).
Average humidity in September
Le Tréhou, France
- Average humidity in September: 82%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is April (81%).
Average rainfall in September
Le Tréhou, France
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is November (94mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days in September
Le Tréhou, France
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is November (21.1 days).
The month with the least rainy days is September (14.4 days).
Average snowfall in September
Le Tréhou, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Le Tréhou, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Le Tréhou, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 6h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Le Tréhou, France
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is September (11.2 days).
The month with the least sunshine days is November (5.9 days).
Average UV index in September
Le Tréhou, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in September
Le Tréhou, France
- Average cloud cover in September: 46
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 45).
Average visibility in September
Le Tréhou, 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).
