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 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
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a moderately hot 24.9°C (76.8°F) in August to a pleasant 21.5°C (70.7°F). In September, the nighttime temperature in Fortan lowers to an average of 11.7°C (53.1°F).Humidity
In Fortan, the average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall in Fortan. Rain falls for 9.8 days and accumulates 25mm (0.98") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Fortan is 12h and 34min.On the first day of September in Fortan, sunrise is at 07:15 and sunset at 20:37. On the last day of the month, sunrise is at 07:54 and sunset at 19:37 CEST.
Sunshine
In September, the average sunshine in Fortan is 7.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Fortan?
What is the average humidity in September in Fortan?
What is the driest month in Fortan?
How many days does it rain in September in Fortan?
When it does not snow in Fortan?
What is the average length of the day in September in Fortan?
When are sunrise and sunset in September in Fortan?
How long on average sun shines in September in Fortan?
What is the UV index reading in September in Fortan?
Average temperature in September
Fortan, France
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is August (24.9°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (14.5°C).
The coldest months (with the lowest average low temperature) are January and February (1.9°C).
Average pressure in September
Fortan, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is November (1014mbar).
Average wind speed in September
Fortan, France
- Average wind speed in September: 11.3km/h
The windiest month (with the highest average wind speed) is February (16.7km/h).
The calmest month (with the lowest average wind speed) is August (10.7km/h).
Average humidity in September
Fortan, France
- Average humidity in September: 73%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Fortan, France
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is June (57mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days in September
Fortan, France
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is September (9.8 days).
Average snowfall in September
Fortan, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Fortan, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Fortan, France
- Average daylight in September: 12h and 4min
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 30min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Fortan, 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 June (10.3 days).
Average UV index in September
Fortan, France
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in September
Fortan, France
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in September
Fortan, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Fortan, France
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