September weather forecastWilliton, United Kingdom
September
Weather in September
September, the first month of the autumn in Williton, is still a refreshing month, with an average temperature fluctuating between 17°C (62.6°F) and 10.2°C (50.4°F).Temperature
In September, Williton experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 18.7°C (65.7°F) in August to a still comfortable 17°C (62.6°F). Williton records a mean low-temperature of 10.2°C (50.4°F) in September.Humidity
The average relative humidity in September is 86%.Rainfall
The months with the least rainfall are May and September Rain falls for 14.7 days and accumulates 30mm (1.18") of rain.Snowfall
In Williton, United Kingdom, snow does not fall in May through October.Daylight
In September, the average length of the day in Williton is 12h and 38min.On the first day of September in Williton, sunrise is at 6:27 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:53 pm BST.
Sunshine
In September, the average sunshine in Williton is 6.6h.UV index
In Williton, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Make use of precautions - It is urged to ward off sun damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Williton, United Kingdom
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (19.3°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is August (12.4°C).
The coldest months (with the lowest average low temperature) are January and February (2.9°C).
Average pressure in September
Williton, 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
Williton, United Kingdom
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is February (20.4km/h).
The calmest months (with the lowest average wind speed) are June and July (13.9km/h).
Average humidity in September
Williton, 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, May and July (84%).
Average rainfall in September
Williton, United Kingdom
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is December (59mm).
The driest months (with the least rainfall) are May and September (30mm).
Average rainfall days in September
Williton, United Kingdom
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is February (14 days).
Average snowfall in September
Williton, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (25mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Williton, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.1 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
Williton, 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 36min
The month with the most sunshine is July (Average sunshine: 7h and 48min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days in September
Williton, United Kingdom
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is May (12.9 days).
The month with the least sunshine days is November (7.9 days).
Average UV index in September
Williton, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (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
Williton, United Kingdom
- Average cloud cover in September: 56
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 51).
Average visibility in September
Williton, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (9km).
The months with the lowest visibility are July, August and September (8km).
