September weather forecastArdnarff, United Kingdom
September
Weather in September
September, the first month of the autumn in Ardnarff, is also a fresh month, with an average temperature varying between 7.5°C (45.5°F) and 12.5°C (54.5°F).Temperature
The advent of September signifies a minor shift to an average high-temperature of a fresh 12.5°C (54.5°F), aligning closely with August. During the nights of September, Ardnarff records an average low-temperature of 7.5°C (45.5°F), reflecting a modest decrease from daytime highs.Humidity
The months with the highest humidity are January, September, November and December, with an average relative humidity of 90%.Rainfall
In September, in Ardnarff, the rain falls for 22.9 days. Throughout September, 90mm (3.54") of precipitation is accumulated. In Ardnarff, during the entire year, the rain falls for 257.7 days and collects up to 1158mm (45.59") of precipitation.Snowfall
In Ardnarff, snow does not fall in June through September.Daylight
In September, the average length of the day in Ardnarff is 12h and 47min.On the first day of September, sunrise is at 6:24 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 6:58 pm BST.
Sunshine
In Ardnarff, the average sunshine in September is 3.4h.UV index
The months with the highest UV index in Ardnarff are May through September, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ardnarff, United Kingdom
- Average high temperature in September: 12.5°C
The warmest month (with the highest average high temperature) is July (14.8°C).
The month with the lowest average high temperature is January (3.5°C).
- Average low temperature in September: 7.5°C
The months with the highest average low temperature are July and August (8.8°C).
The coldest month (with the lowest average low temperature) is February (0.3°C).
Average pressure in September
Ardnarff, United Kingdom
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The months with the lowest atmospheric pressure are November and December (1005.4mbar).
Average wind speed in September
Ardnarff, United Kingdom
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is January (18.6km/h).
The calmest month (with the lowest average wind speed) is June (11km/h).
Average humidity in September
Ardnarff, United Kingdom
- Average humidity in September: 90%
The months with the highest relative humidity are January, September, November and December (90%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in September
Ardnarff, United Kingdom
- Average rainfall in September: 90mm
The wettest month (with the highest rainfall) is December (134mm).
The driest month (with the least rainfall) is April (51mm).
Average rainfall days in September
Ardnarff, United Kingdom
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is February (17.2 days).
Average snowfall in September
Ardnarff, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (105mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Ardnarff, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ardnarff, United Kingdom
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 17h and 54min).
The month with the shortest days is December (Average daylight: 6h and 48min).
- Average sunshine in September: 3h and 24min
The months with the most sunshine are April, May and June (Average sunshine: 4h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 12min).
Average sunshine days in September
Ardnarff, United Kingdom
- Average sunshine days in September: 4.9 days
The month with the most sunshine days is May (8.2 days).
The month with the least sunshine days is August (4.3 days).
Average UV index in September
Ardnarff, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June, July, August and September (UV index 3).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Ardnarff, United Kingdom
- Average cloud cover in September: 77
The month with the most cloud cover is August (Cloud cover 78).
The month with the least cloud cover is April (Cloud cover 68).
Average visibility in September
Ardnarff, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are April and May (9km).
The month with the lowest visibility is August (7km).
