September weather forecastLongdown, United Kingdom
September
Weather in September
September, the first month of the autumn in Longdown, is still a refreshing month, with an average temperature fluctuating between 11.3°C (52.3°F) and 17°C (62.6°F).Temperature
The average high-temperature during September registers at a still enjoyable 17°C (62.6°F), maintaining a close resemblance to the previous month. In the month of September, Longdown records a consistent average low-temperature of 11.3°C (52.3°F).Humidity
In September, the average relative humidity is 84%.Rainfall
In September, in Longdown, the rain falls for 11.5 days. Throughout September, 26mm (1.02") of precipitation is accumulated. In Longdown, during the entire year, the rain falls for 171.2 days and collects up to 453mm (17.83") of precipitation.Snowfall
In Longdown, snow does not fall in April through October.Daylight
In Longdown, the average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 6:29 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:54 pm BST.
Sunshine
The average sunshine in September in Longdown, United Kingdom, is 7.5h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Act with care - The need to guard against sun damage is communicated. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Longdown, United Kingdom
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (7.9°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in September
Longdown, United Kingdom
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in September
Longdown, United Kingdom
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is February (22.5km/h).
The calmest month (with the lowest average wind speed) is July (14.8km/h).
Average humidity in September
Longdown, United Kingdom
- Average humidity in September: 84%
The months with the highest relative humidity are January, October, November and December (86%).
The months with the lowest relative humidity are April, May and July (83%).
Average rainfall in September
Longdown, United Kingdom
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is May (24mm).
Average rainfall days in September
Longdown, United Kingdom
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is November (17.8 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in September
Longdown, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Longdown, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.3 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
Longdown, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The months with the least sunshine are January, February and November (Average sunshine: 4h and 6min).
Average sunshine days in September
Longdown, United Kingdom
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is November (8.6 days).
Average UV index in September
Longdown, 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, November and December (UV index 2).
Average cloud cover in September
Longdown, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is November (Cloud cover 59).
The month with the least cloud cover is April (Cloud cover 45).
Average visibility in September
Longdown, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is February (10km).
The months with the lowest visibility are January, March, April, May, June, July, August, September, October, November and December (9km).
