September weather forecastLlanover, United Kingdom
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Llanover, United Kingdom, with an average temperature fluctuating between 16.7°C (62.1°F) and 9.5°C (49.1°F).Temperature
As Llanover welcomes September, the average high-temperature records at a still comfortable 16.7°C (62.1°F), marking an insignificant deviation from the prior month. During the month of September, an average temperature of 9.5°C (49.1°F) is noted during the nights in Llanover.Humidity
The average relative humidity in September in Llanover is 86%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.5 days and typically collects 16mm (0.63") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Llanover is 12h and 38min.On the first day of September in Llanover, sunrise is at 6:25 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:51 pm BST.
Sunshine
The average sunshine in September is 7h.UV index
The months with the highest UV index in Llanover are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Make use of precautions - It is urged to ward off sun damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. 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
Llanover, United Kingdom
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is August (11.7°C).
The coldest months (with the lowest average low temperature) are January and February (2.1°C).
Average pressure in September
Llanover, United Kingdom
- Average pressure in September: 1016.6mbar
The months with the highest atmospheric pressure are May and September (1016.6mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in September
Llanover, United Kingdom
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is February (19.6km/h).
The calmest months (with the lowest average wind speed) are June and July (13.1km/h).
Average humidity in September
Llanover, United Kingdom
- Average humidity in September: 86%
The months with the highest relative humidity are November and December (90%).
The months with the lowest relative humidity are March, April, May and July (84%).
Average rainfall in September
Llanover, United Kingdom
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is November (45mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in September
Llanover, United Kingdom
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (15.3 days).
The months with the least rainy days are February and December (9.3 days).
Average snowfall in September
Llanover, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (18mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Llanover, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Llanover, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 0min
The months with the most sunshine are May and July (Average sunshine: 7h and 30min).
The month with the least sunshine is November (Average sunshine: 3h and 36min).
Average sunshine days in September
Llanover, United Kingdom
- Average sunshine days in September: 18 days
The month with the most sunshine days is December (18.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Llanover, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Llanover, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is November (Cloud cover 64).
The months with the least cloud cover are April and May (Cloud cover 52).
Average visibility in September
Llanover, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (9km).
The months with the lowest visibility are August and September (8km).
