September weather forecastLanderneau, France
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Landerneau, France, with an average temperature varying between 19°C (66.2°F) and 11.6°C (52.9°F).Temperature
Landerneau's entry into September measures an average high-temperature of a still refreshing 19°C (66.2°F), closely parallel to the preceding month. An average nighttime temperature of 11.6°C (52.9°F) is recorded in Landerneau during September.Humidity
The average relative humidity in September is 82%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.4 days and typically collects 29mm (1.14") of precipitation.Snowfall
In Landerneau, snow does not fall in April through October.Daylight
In Landerneau, the average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 07:35 and sunset at 20:58. On the last day of September, in Landerneau, sunrise is at 08:15 and sunset at 19:57 CEST.
Sunshine
In September, the average sunshine is 6.9h.UV index
In Landerneau, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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
Landerneau, 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).
