September weather forecastUpper Colwall, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Upper Colwall, United Kingdom, with temperature in the range of an average high of 17.5°C (63.5°F) and an average low of 9.8°C (49.6°F).Temperature
A minimal variation is noted in Upper Colwall's average high-temperature at the onset of September, reaching a still refreshing 17.5°C (63.5°F) from August's 19.7°C (67.5°F). During September, Upper Colwall observes a consistent average nighttime temperature of 9.8°C (49.6°F).Humidity
In Upper Colwall, United Kingdom, the average relative humidity in September is 83%.Rainfall
In Upper Colwall, in September, it is raining for 10.8 days, with typically 16mm (0.63") of accumulated precipitation. Throughout the year, in Upper Colwall, there are 146.1 rainfall days, and 247mm (9.72") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 39min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:48 pm BST.
Sunshine
In Upper Colwall, the average sunshine in September is 6.7h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. 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
Upper Colwall, United Kingdom
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is July (20.2°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Upper Colwall, United Kingdom
- Average pressure in September: 1016.5mbar
The months with the highest atmospheric pressure are May and September (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in September
Upper Colwall, United Kingdom
- Average wind speed in September: 13km/h
The windiest month (with the highest average wind speed) is February (17.9km/h).
The calmest months (with the lowest average wind speed) are June and July (12.4km/h).
Average humidity in September
Upper Colwall, United Kingdom
- Average humidity in September: 83%
The months with the highest relative humidity are January, November and December (90%).
The months with the lowest relative humidity are July and August (82%).
Average rainfall in September
Upper Colwall, United Kingdom
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is June (32mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Upper Colwall, United Kingdom
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is August (15 days).
The month with the least rainy days is February (10 days).
Average snowfall in September
Upper Colwall, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (7mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Upper Colwall, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 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
Upper Colwall, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 6h and 42min
The month with the most sunshine is July (Average sunshine: 7h and 30min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days in September
Upper Colwall, United Kingdom
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is March (17.3 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in September
Upper Colwall, 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
Upper Colwall, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is November (Cloud cover 62).
The months with the least cloud cover are April and September (Cloud cover 53).
Average visibility in September
Upper Colwall, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, May and December (9km).
The months with the lowest visibility are April, June, July, August, September, October and November (8km).
