September weather forecastLanvéoc, France
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Lanvéoc, France, with temperature in the range of an average low of 13.3°C (55.9°F) and an average high of 18.6°C (65.5°F).Temperature
The introduction of September sees an average high-temperature of a still enjoyable 18.6°C (65.5°F), hardly deviating from August. During the nights in September, an average low-temperature of 13.3°C (55.9°F) is observed.Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the least rainfall in Lanvéoc is September, when the rain falls for 11.5 days and typically collects 25mm (0.98") of precipitation.Snowfall
April through October are months without snowfall in Lanvéoc.Sea temperature
In Lanvéoc, France, the average seawater temperature in September is 16.6°C (61.9°F).Note: A surface water temperature of 16.6°C (61.9°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
In September, the average length of the day in Lanvéoc, France, is 12h and 35min.On the first day of September in Lanvéoc, France, sunrise is at 07:36 and sunset at 20:59. On the last day of the month, sunrise is at 08:16 and sunset at 19:58 CEST.
Sunshine
In September, the average sunshine is 7.4h.UV index
The average daily maximum UV index in September in Lanvéoc, France, is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lanvéoc, France
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is July (19.6°C).
The month with the lowest average high temperature is February (9.7°C).
- Average low temperature in September: 13.3°C
The months with the highest average low temperature are July and August (14.4°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).
Average pressure in September
Lanvéoc, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is September (1018.4mbar).
The month with the lowest atmospheric pressure is November (1012.2mbar).
Average wind speed in September
Lanvéoc, France
- Average wind speed in September: 16.8km/h
The windiest month (with the highest average wind speed) is December (24.7km/h).
The calmest months (with the lowest average wind speed) are July and August (16.4km/h).
Average humidity in September
Lanvéoc, France
- Average humidity in September: 80%
The months with the highest relative humidity are January, June, October and December (82%).
The month with the lowest relative humidity is April (79%).
Average rainfall in September
Lanvéoc, France
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is November (88mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days in September
Lanvéoc, France
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is January (20.5 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in September
Lanvéoc, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (7mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Lanvéoc, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Lanvéoc, France
- Average sea temperature in September: 16.6°C
The best month for swimming (with the highest average sea temperature) is August (16.9°C).
The coldest month (with the lowest average sea temperature) is March (10.2°C).
Average daylight in September /
Average sunshine in September
Lanvéoc, 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: 7h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Lanvéoc, France
- Average sunshine days in September: 14.6 days
The months with the most sunshine days are May and September (14.6 days).
The month with the least sunshine days is November (6.6 days).
Average UV index in September
Lanvéoc, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Lanvéoc, France
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 40).
Average visibility in September
Lanvéoc, France
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, June, September and October (10km).
The months with the lowest visibility are January, May, July, August, November and December (9km).
