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
Bretteville-sur-Ay, France, observes a minor difference in average high-temperatures between August's 18.2°C (64.8°F) and September's 17.5°C (63.5°F). Bretteville-sur-Ay, during September nights, records a temperature marginally cooler than the daytime average, at a mild 15.3°C (59.5°F).Humidity
In September, the average relative humidity in Bretteville-sur-Ay is 79%.Rainfall
In September, in Bretteville-sur-Ay, the rain falls for 13.3 days. Throughout September, 31mm (1.22") of precipitation is accumulated. In Bretteville-sur-Ay, during the entire year, the rain falls for 189 days and collects up to 538mm (21.18") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Bretteville-sur-Ay, the average length of the day in September is 12h and 35min.On the first day of September in Bretteville-sur-Ay, sunrise is at 07:23 and sunset at 20:49. On the last day of the month, sunrise is at 08:05 and sunset at 19:47 CEST.
Sunshine
The average sunshine in September is 8.6h.UV index
June through September, with an average maximum UV index of 5, are months with the highest UV index in Bretteville-sur-Ay. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 5 in September leads to these guidelines:
Guard yourself - Avoiding sunburn is suggested. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What are September temperatures in Bretteville-sur-Ay?
What is the average humidity in September in Bretteville-sur-Ay?
How many days does it rain in September in Bretteville-sur-Ay?
When it does not snow in Bretteville-sur-Ay?
How many hours of daylight does Bretteville-sur-Ay have in September?
When is the sunrise / sunset in September in Bretteville-sur-Ay?
How long on average sun shines in September in Bretteville-sur-Ay?
What is the month with the highest UV index in Bretteville-sur-Ay?
How high is the UV index in September in Bretteville-sur-Ay?
Average temperature in September
Bretteville-sur-Ay, France
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (18.2°C).
The month with the lowest average high temperature is February (9°C).
- Average low temperature in September: 15.3°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (6.8°C).
Average pressure in September
Bretteville-sur-Ay, 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 (1011.8mbar).
Average wind speed in September
Bretteville-sur-Ay, France
- Average wind speed in September: 23.5km/h
The windiest month (with the highest average wind speed) is December (34km/h).
The calmest month (with the lowest average wind speed) is July (20.4km/h).
Average humidity in September
Bretteville-sur-Ay, France
- Average humidity in September: 79%
The months with the highest relative humidity are June and July (83%).
The months with the lowest relative humidity are November and December (78%).
Average rainfall in September
Bretteville-sur-Ay, France
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is July (25mm).
Average rainfall days in September
Bretteville-sur-Ay, France
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is November (21.2 days).
The months with the least rainy days are May and July (12.2 days).
Average snowfall in September
Bretteville-sur-Ay, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Bretteville-sur-Ay, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.4 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
Bretteville-sur-Ay, 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and November (Average sunshine: 4h and 0min).
Average sunshine days in September
Bretteville-sur-Ay, France
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is November (5.8 days).
Average UV index in September
Bretteville-sur-Ay, France
- Average UV index in September: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in September
Bretteville-sur-Ay, France
- Average cloud cover in September: 39
The months with the most cloud cover are January, November and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Bretteville-sur-Ay, 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).
Bretteville-sur-Ay, France
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