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's arrival brings an average high-temperature of a still refreshing 17.3°C (63.1°F), demonstrating subtle variation from the preceding month. L'Aumône's nighttime temperatures in September settle close to daytime highs at an average of 14.9°C (58.8°F).Humidity
The average relative humidity in September is 80%.Rainfall
In L'Aumône, in September, during 13.6 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In L'Aumône, during the entire year, the rain falls for 195.6 days and collects up to 554mm (21.81") of precipitation.Snowfall
In L'Aumône, snow does not fall in February through December.Daylight
The average length of the day in September in L'Aumône is 12h and 36min.On the first day of September, sunrise is at 06:27 and sunset at 19:53. On the last day of the month, sunrise is at 07:09 and sunset at 18:50 BST.
Sunshine
In September, the average sunshine in L'Aumône is 8.3h.UV index
The months with the highest UV index in L'Aumône are July through September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What are the temperatures in L'Aumône in September?
What is the average humidity in September in L'Aumône?
How much does it rain in L'Aumône in September?
When it does not snow in L'Aumône?
What is the average length of the day in September in L'Aumône?
When is the sunrise / sunset in September in L'Aumône?
How long on average sun shines in September in L'Aumône?
What is the month with the highest UV index in L'Aumône?
What is the UV index intensity in September in L'Aumône?
Average temperature in September
L'Aumône, Guernsey
- Average high temperature in September: 17.3°C
The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).
- Average low temperature in September: 14.9°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in September
L'Aumône, Guernsey
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).
Average wind speed in September
L'Aumône, Guernsey
- Average wind speed in September: 25.7km/h
The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).
Average humidity in September
L'Aumône, Guernsey
- Average humidity in September: 80%
The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are November and December (77%).
Average rainfall in September
L'Aumône, Guernsey
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in September
L'Aumône, Guernsey
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is June (11.4 days).
Average snowfall in September
L'Aumône, Guernsey
- Average snowfall in September: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
L'Aumône, Guernsey
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
L'Aumône, Guernsey
- 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 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
L'Aumône, Guernsey
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4.2 days).
Average UV index in September
L'Aumône, Guernsey
- Average UV index in September: 5
The months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in September
L'Aumône, Guernsey
- Average cloud cover in September: 41
The months with the most cloud cover are January, November and December (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in September
L'Aumône, Guernsey
- 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).
L'Aumône, Guernsey
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