September weather forecastLanhouarneau, France
September
Weather in September
September, the first month of the autumn in Lanhouarneau, is also an enjoyable month, with an average temperature fluctuating between 11.6°C (52.9°F) and 19°C (66.2°F).Temperature
The advent of September sees the average high-temperature at a still refreshing 19°C (66.2°F), subtly shifted from August's 19.9°C (67.8°F). An average minimum temperature of 11.6°C (52.9°F) is recorded in Lanhouarneau, France, during the month of September.Humidity
In Lanhouarneau, the average relative humidity in September is 82%.Rainfall
The month with the least rainfall in Lanhouarneau is September, when the rain falls for 14.4 days and typically collects 29mm (1.14") of precipitation.Snowfall
April through October are months without snowfall in Lanhouarneau.Daylight
In September, the average length of the day is 12h and 35min.On the first day of September, sunrise is at 07:34 and sunset at 20:58. On the last day of the month, sunrise is at 08:15 and sunset at 19:57 CEST.
Sunshine
The average sunshine in September in Lanhouarneau is 6.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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
Lanhouarneau, 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).
