September weather forecastDinan, France
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Dinan, France, with an average temperature ranging between min 12.5°C (54.5°F) and max 19.7°C (67.5°F).Temperature
The arrival of September marks a slight shift to an average high-temperature of a comfortable 19.7°C (67.5°F) from August's 21.3°C (70.3°F). Nightly temperatures drop to an average low of 12.5°C (54.5°F) in September.Humidity
The least humid month is September, with an average relative humidity of 78%.Rainfall
September is the month with the least rainfall. Rain falls for 14.3 days and accumulates 28mm (1.1") of precipitation.Snowfall
In Dinan, snow does not fall in May through October.Daylight
In September, the average length of the day in Dinan is 12h and 35min.On the first day of the month, sunrise is at 07:26 and sunset at 20:49. On the last day of September, sunrise is at 08:06 and sunset at 19:49 CEST.
Sunshine
In September, the average sunshine in Dinan is 7.4h.UV index
In Dinan, France, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Exercise prevention - Precautions against solar damage are endorsed. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dinan, France
- Average high temperature in September: 19.7°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in September
Dinan, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is September (1018.2mbar).
The month with the lowest atmospheric pressure is November (1012.4mbar).
Average wind speed in September
Dinan, France
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is December (22.3km/h).
The calmest month (with the lowest average wind speed) is August (14.3km/h).
Average humidity in September
Dinan, France
- Average humidity in September: 78%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is September (78%).
Average rainfall in September
Dinan, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is November (72mm).
The driest month (with the least rainfall) is September (28mm).
Average rainfall days in September
Dinan, France
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is January (20.2 days).
The month with the least rainy days is September (14.3 days).
Average snowfall in September
Dinan, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (11mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Dinan, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.9 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
Dinan, 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 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Dinan, France
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is September (12.5 days).
The months with the least sunshine days are January and November (6.6 days).
Average UV index in September
Dinan, 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
Dinan, France
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 39).
Average visibility in September
Dinan, France
- Average visibility in September: 9km
The month with the highest visibility is March (10km).
The months with the lowest visibility are January, February, April, May, June, July, August, September, October, November and December (9km).
