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
September indicates a minor shift in the average high-temperature, from August's warm 24.2°C (75.6°F) to a refreshing 19.6°C (67.3°F). September's average low-temperature reading in Firminy settles at a chilly 9.5°C (49.1°F).Humidity
In Firminy, the average relative humidity in September is 78%.Rainfall
In Firminy, during September, the rain falls for 13.4 days and regularly aggregates up to 33mm (1.3") of precipitation. In Firminy, France, during the entire year, the rain falls for 177.1 days and collects up to 594mm (23.39") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Firminy is 12h and 32min.On the first day of the month, sunrise is at 07:05 and sunset at 20:20. On the last day of September, in Firminy, France, sunrise is at 07:40 and sunset at 19:24 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
In Firminy, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Firminy?
What is the average humidity in September in Firminy?
How many days does it rain in September in Firminy?
When it does not snow in Firminy?
Does it snow in Firminy in September?
What is the average length of the day in September in Firminy?
When is the sunrise / sunset in September in Firminy?
How long on average sun shines in September in Firminy?
What is the UV index reading in September in Firminy?
Average temperature in September
Firminy, France
- Average high temperature in September: 19.6°C
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is January (4.7°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (-1.3°C).
Average pressure in September
Firminy, France
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Firminy, France
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).
Average humidity in September
Firminy, France
- Average humidity in September: 78%
The months with the highest relative humidity are November and December (86%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Firminy, France
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is May (67mm).
The driest month (with the least rainfall) is February (32mm).
Average rainfall days in September
Firminy, France
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is October (11.9 days).
Average snowfall in September
Firminy, France
- Average snowfall in September: 0mm
The month with the highest snowfall is November (86mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Firminy, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Firminy, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Firminy, France
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is October (16.4 days).
The month with the least sunshine days is May (7.8 days).
Average UV index in September
Firminy, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Firminy, 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 August (Cloud cover 30).
Average visibility in September
Firminy, France
- Average visibility in September: 8km
The months with the highest visibility are March and August (9km).
The months with the lowest visibility are January, February, April, May, June, July, September, October, November and December (8km).
Firminy, France
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