September weather forecastMerlas, France
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Merlas, France, with temperature in the range of an average low of 8°C (46.4°F) and an average high of 18.3°C (64.9°F).Temperature
As August transitions into September, Merlas sees a gentle drop in the average high-temperature, transitioning from a pleasant 22.6°C (72.7°F) to an enjoyable 18.3°C (64.9°F). Nightly temperatures drop to an average low of 8°C (46.4°F) in September.Humidity
In September, the average relative humidity is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.6 days and typically collects 23mm (0.91") of precipitation.Snowfall
In Merlas, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September, sunrise is at 06:59 and sunset at 20:14. On the last day of the month, sunrise is at 07:34 and sunset at 19:19 CEST.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Merlas, France
- Average high temperature in September: 18.3°C
The warmest months (with the highest average high temperature) are July and August (22.6°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 8°C
The months with the highest average low temperature are July and August (11.2°C).
The coldest month (with the lowest average low temperature) is February (-3.7°C).
Average pressure in September
Merlas, France
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Merlas, France
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is February (8km/h).
The calmest month (with the lowest average wind speed) is September (6.2km/h).
Average humidity in September
Merlas, France
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Merlas, France
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is December (50mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in September
Merlas, France
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Merlas, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (197mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Merlas, France
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Merlas, France
- Average daylight in September: 12h and 30min
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 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Merlas, France
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
Merlas, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Merlas, France
- Average cloud cover in September: 31
The months with the most cloud cover are January and February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Merlas, 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).
