September weather forecastCannes, France

September
Weather in September
September represents a transition from the hot summer season to the moderate autumn in Cannes. Cannes sees a decline in temperature, ranging between 17.6°C (63.7°F) to 23.5°C (74.3°F), as summer slowly makes way for fall. Although September marks the end of beach season with decreasing sea temperature, it still maintains a warm climate, ideal for outdoor exploration. The windy conditions slightly pick up compared to the previous months, but they remain hardly noticeable. Rainfall comes into sight again, with a moderate increase anticipated, indicating the end of the dry months.Temperature
With the beginning of September, the average high-temperature shows a small decrease, transitioning from a moderately hot 27.2°C (81°F) in August to a still warm 23.5°C (74.3°F). Cannes anticipates an average minimum temperature of 17.6°C (63.7°F) in the month of September.Humidity
The average relative humidity in September is 67%.Rainfall
In Cannes, in September, it is raining for 7.9 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, there are 107.2 rainfall days, and 501mm (19.72") of precipitation is accumulated.Snowfall
March through December are months without snowfall.Sea temperature
In September, the average sea temperature is 22.3°C (72.1°F).Note: Individual preferences to cold, influenced by conditions such as sunshine, wind, and surrounding temperature, play a part in the comfort of swimming in 22.3°C (72.1°F) waters. (As an aside, Olympic swimming standards dictate water temperatures from 25°C (77°F) to 28°C (82.4°F).)
Daylight
The average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 06:56 and sunset at 20:07. On the last day of September, sunrise is at 07:28 and sunset at 19:14 CEST.
Sunshine
The average sunshine in September is 9.8h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Take necessary precautions - Defending against sun damage is advocated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cannes, France
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is August (27.2°C).
The month with the lowest average high temperature is January (11.1°C).
- Average low temperature in September: 17.6°C
The month with the highest average low temperature is August (20.8°C).
The coldest months (with the lowest average low temperature) are January and February (6.4°C).
Average pressure in September
Cannes, France
- Average pressure in September: 1015.9mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The months with the lowest atmospheric pressure are April and November (1013.9mbar).
Average wind speed in September
Cannes, France
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is March (13.4km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).
Average humidity in September
Cannes, France
- Average humidity in September: 67%
The months with the highest relative humidity are October and November (70%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Cannes, France
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is November (117mm).
The driest month (with the least rainfall) is August (12mm).
Average rainfall days in September
Cannes, France
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is August (5.1 days).
Average snowfall in September
Cannes, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Cannes, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Cannes, France
- Average sea temperature in September: 22.3°C
The best month for swimming (with the highest average sea temperature) is August (23.7°C).
The coldest month (with the lowest average sea temperature) is February (13.1°C).
Average daylight in September /
Average sunshine in September
Cannes, France
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 48min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).
Average sunshine days in September
Cannes, France
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in September
Cannes, France
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Cannes, France
- Average cloud cover in September: 16
The month with the most cloud cover is February (Cloud cover 29).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Cannes, 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).





