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
In Cassis, the average high-temperature in September gently drops from a moderately hot 26.3°C (79.3°F) in August to a still warm 23.2°C (73.8°F). Cassis's temperature during September nights registers a minor decrease to an average low of 18.5°C (65.3°F).Humidity
In September, the average relative humidity is 68%.Rainfall
In Cassis, during September, the rain falls for 8.2 days and regularly aggregates up to 33mm (1.3") of precipitation. Throughout the year, there are 110.7 rainfall days, and 468mm (18.43") of precipitation is accumulated.Snowfall
In Cassis, snow does not fall in April through November.Sea temperature
In Cassis, the average seawater temperature in September is 21.8°C (71.2°F).Note: For the majority, swimming in water with a temperature of 21.8°C (71.2°F) is not enjoyable. The difficulty in managing breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Cassis, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 07:02 and sunset at 20:12. On the last day of September, in Cassis, France, sunrise is at 07:34 and sunset at 19:20 CEST.
Sunshine
In Cassis, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index in Cassis is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take precautions - Protection against sunburn is recommended. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Stay sun-safe with clothing that is both closely woven and worn loosely. Stay aware! UV radiation is magnified when reflecting off sand and water.
Frequently asked questions
What are the temperatures in Cassis in September?
What is the average humidity in September in Cassis?
How much does it rain in Cassis in September?
When it does not snow in Cassis?
What is the sea water temperature in September in Cassis?
How many hours of daylight does Cassis have in September?
When are sunrise and sunset in September in Cassis?
How long on average sun shines in September in Cassis?
How high is the UV index in September in Cassis?
Average temperature in September
Cassis, France
- Average high temperature in September: 23.2°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in September: 18.5°C
The month with the highest average low temperature is August (21.3°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in September
Cassis, France
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is December (1019.1mbar).
The month with the lowest atmospheric pressure is November (1014.1mbar).
Average wind speed in September
Cassis, France
- Average wind speed in September: 16.8km/h
The windiest months (with the highest average wind speed) are January and February (22.6km/h).
The calmest month (with the lowest average wind speed) is August (15.4km/h).
Average humidity in September
Cassis, France
- Average humidity in September: 68%
The months with the highest relative humidity are November and December (74%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Cassis, France
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is November (88mm).
The driest month (with the least rainfall) is July (12mm).
Average rainfall days in September
Cassis, France
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is November (13 days).
The month with the least rainy days is July (5.2 days).
Average snowfall in September
Cassis, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Cassis, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Cassis, France
- Average sea temperature in September: 21.8°C
The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is February (13°C).
Average daylight in September /
Average sunshine in September
Cassis, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in September
Cassis, France
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is November (15.4 days).
Average UV index in September
Cassis, 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
Cassis, France
- Average cloud cover in September: 16
The months with the most cloud cover are January and November (Cloud cover 34).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Cassis, 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).
Cassis, France
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