September weather forecastChallacombe, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Challacombe, United Kingdom, with temperature in the range of an average high of 16.7°C (62.1°F) and an average low of 10.5°C (50.9°F).Temperature
September's arrival shows an average high-temperature of a still refreshing 16.7°C (62.1°F), hardly different from the previous month. September's nights in Challacombe observe an average temperature of 10.5°C (50.9°F).Humidity
In Challacombe, the average relative humidity in September is 86%.Rainfall
In Challacombe, in September, during 12.6 rainfall days, 18mm (0.71") of precipitation is typically accumulated. Throughout the year, in Challacombe, there are 168 rainfall days, and 297mm (11.69") of precipitation is accumulated.Snowfall
In Challacombe, United Kingdom, snow does not fall in May through October.Daylight
In Challacombe, United Kingdom, the average length of the day in September is 12h and 38min.On the first day of September, sunrise is at 6:29 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:55 pm BST.
Sunshine
In September, the average sunshine in Challacombe is 6.5h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index in Challacombe. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 in September translates into these instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Challacombe, United Kingdom
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is July (18.7°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (12.5°C).
The coldest month (with the lowest average low temperature) is February (3.2°C).
Average pressure in September
Challacombe, United Kingdom
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010.1mbar).
Average wind speed in September
Challacombe, United Kingdom
- Average wind speed in September: 15.7km/h
The windiest month (with the highest average wind speed) is February (21.7km/h).
The calmest month (with the lowest average wind speed) is July (14.6km/h).
Average humidity in September
Challacombe, United Kingdom
- Average humidity in September: 86%
The months with the highest relative humidity are January, November and December (88%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in September
Challacombe, United Kingdom
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is December (39mm).
The driest month (with the least rainfall) is May (16mm).
Average rainfall days in September
Challacombe, United Kingdom
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is November (17.1 days).
The month with the least rainy days is February (11.2 days).
Average snowfall in September
Challacombe, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (14mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Challacombe, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Challacombe, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 6h and 30min
The month with the most sunshine is May (Average sunshine: 7h and 42min).
The month with the least sunshine is November (Average sunshine: 3h and 30min).
Average sunshine days in September
Challacombe, United Kingdom
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is March (15.5 days).
The months with the least sunshine days are August and November (8.8 days).
Average UV index in September
Challacombe, 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
Challacombe, United Kingdom
- Average cloud cover in September: 56
The month with the most cloud cover is November (Cloud cover 66).
The month with the least cloud cover is May (Cloud cover 50).
Average visibility in September
Challacombe, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
