Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As Ars-en-Ré welcomes September, the average high-temperature stabilizes at a comfortable 19.9°C (67.8°F), showing little deviation from August's 21.2°C (70.2°F). Nighttime in Ars-en-Ré, France, during September, brings an average low of 16.6°C (61.9°F), a modest reduction from the day's peak.Humidity
With an average relative humidity of 74%, September is the least humid month in Ars-en-Ré.Rainfall
In September, the rain falls for 9.8 days. Throughout September, 33mm (1.3") of precipitation is accumulated. In Ars-en-Ré, during the entire year, the rain falls for 166.4 days and collects up to 487mm (19.17") of precipitation.Snowfall
In Ars-en-Ré, snow does not fall in January, March through November.Sea temperature
In Ars-en-Ré, in September, the average water temperature is 19.1°C (66.4°F).Note: Swimming in 19.1°C (66.4°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).
Daylight
In September, the average length of the day is 12h and 32min.On the first day of September in Ars-en-Ré, sunrise is at 07:27 and sunset at 20:44. On the last day of the month, sunrise is at 08:03 and sunset at 19:47 CEST.
Sunshine
In Ars-en-Ré, the average sunshine in September is 8.4h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What is the temperature in September in Ars-en-Ré?
What is the least humid month in Ars-en-Ré?
What is the average humidity in September in Ars-en-Ré?
How much does it rain in Ars-en-Ré in September?
When it does not snow in Ars-en-Ré?
How cold is the water in September in Ars-en-Ré?
What is the average length of the day in September in Ars-en-Ré?
When are sunrise and sunset in September in Ars-en-Ré?
How many hours of sunshine does Ars-en-Ré have in September?
When is the highest UV index in Ars-en-Ré?
What is the UV index intensity in September in Ars-en-Ré?
Average temperature in September
Ars-en-Ré, France
- Average high temperature in September: 19.9°C
The warmest month (with the highest average high temperature) is August (21.2°C).
The month with the lowest average high temperature is February (9.8°C).
- Average low temperature in September: 16.6°C
The month with the highest average low temperature is August (18.2°C).
The coldest month (with the lowest average low temperature) is February (7.1°C).
Average pressure in September
Ars-en-Ré, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.9mbar).
The month with the lowest atmospheric pressure is November (1014mbar).
Average wind speed in September
Ars-en-Ré, France
- Average wind speed in September: 19.2km/h
The windiest month (with the highest average wind speed) is December (27.5km/h).
The calmest month (with the lowest average wind speed) is August (17.9km/h).
Average humidity in September
Ars-en-Ré, France
- Average humidity in September: 74%
The months with the highest relative humidity are January and May (79%).
The month with the lowest relative humidity is September (74%).
Average rainfall in September
Ars-en-Ré, France
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is July (27mm).
Average rainfall days in September
Ars-en-Ré, France
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is November (18.2 days).
The month with the least rainy days is September (9.8 days).
Average snowfall in September
Ars-en-Ré, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (3mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Ars-en-Ré, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Ars-en-Ré, France
- Average sea temperature in September: 19.1°C
The best month for swimming (with the highest average sea temperature) is August (19.6°C).
The coldest month (with the lowest average sea temperature) is February (9.8°C).
Average daylight in September /
Average sunshine in September
Ars-en-Ré, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is November (Average sunshine: 4h and 42min).
Average sunshine days in September
Ars-en-Ré, France
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is November (9.9 days).
Average UV index in September
Ars-en-Ré, France
- Average UV index in September: 5
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in September
Ars-en-Ré, France
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in September
Ars-en-Ré, France
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Ars-en-Ré, France
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