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
Saint-Étienne-du-Rouvray experiences an average high-temperature of a comfortable 19.5°C (67.1°F) in September, subtly different from August's 22.4°C (72.3°F). The average temperature in Saint-Étienne-du-Rouvray drops to a fresh 10.5°C (50.9°F) during the night in the month of September.Humidity
In September, the average relative humidity in Saint-Étienne-du-Rouvray is 80%.Rainfall
The months with the least rainfall are April and September Rain falls for 12.9 days and accumulates 21mm (0.83") of rain.Snowfall
In Saint-Étienne-du-Rouvray, snow does not fall in May through October.Daylight
In Saint-Étienne-du-Rouvray, the average length of the day in September is 12h and 36min.On the first day of the month, sunrise is at 07:12 and sunset at 20:38. On the last day of September, in Saint-Étienne-du-Rouvray, sunrise is at 07:54 and sunset at 19:36 CEST.
Sunshine
In September, the average sunshine in Saint-Étienne-du-Rouvray, France, is 7.3h.UV index
The average daily maximum UV index in September in Saint-Étienne-du-Rouvray is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Undertake precautions - Obligation exists to protect against skin and eye damage. 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.
Frequently asked questions
What is the usual temperature for Saint-Étienne-du-Rouvray in September?
What is the average humidity in September in Saint-Étienne-du-Rouvray?
What is the driest month in Saint-Étienne-du-Rouvray?
How much does it rain in Saint-Étienne-du-Rouvray in September?
When it does not snow in Saint-Étienne-du-Rouvray?
What is the average length of the day in September in Saint-Étienne-du-Rouvray?
When are sunrise and sunset in September in Saint-Étienne-du-Rouvray?
How many hours of sunshine does Saint-Étienne-du-Rouvray have in September?
What is the UV index intensity in September in Saint-Étienne-du-Rouvray?
Average temperature in September
Saint-Étienne-du-Rouvray, France
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (22.4°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (13°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Saint-Étienne-du-Rouvray, France
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).
Average wind speed in September
Saint-Étienne-du-Rouvray, France
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is February (17.5km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity in September
Saint-Étienne-du-Rouvray, France
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (78%).
Average rainfall in September
Saint-Étienne-du-Rouvray, France
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is December (45mm).
The driest months (with the least rainfall) are April and September (21mm).
Average rainfall days in September
Saint-Étienne-du-Rouvray, France
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Saint-Étienne-du-Rouvray, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (27mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Saint-Étienne-du-Rouvray, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Saint-Étienne-du-Rouvray, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Saint-Étienne-du-Rouvray, France
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Saint-Étienne-du-Rouvray, France
- Average UV index in September: 4
The months with the highest UV index are 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
Saint-Étienne-du-Rouvray, France
- Average cloud cover in September: 44
The months with the most cloud cover are January and November (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 44).
Average visibility in September
Saint-Étienne-du-Rouvray, France
- Average visibility in September: 8km
The months with the highest visibility are February, March, April and December (9km).
The months with the lowest visibility are January, May, June, July, August, September, October and November (8km).
Saint-Étienne-du-Rouvray, France
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