September weather forecastAllhallows, United Kingdom
September
Weather in September
September, the first month of the autumn in Allhallows, is still a refreshing month, with temperature in the range of an average high of 18.3°C (64.9°F) and an average low of 13.3°C (55.9°F).Temperature
The onset of September brings an average high-temperature of an enjoyable 18.3°C (64.9°F), nearly matching the August temperature. Allhallows notes a steady average temperature of 13.3°C (55.9°F) during the nights of September.Humidity
In September, the average relative humidity is 77%.Rainfall
In Allhallows, in September, it is raining for 11.3 days, with typically 24mm (0.94") of accumulated precipitation. In Allhallows, during the entire year, the rain falls for 163.3 days and collects up to 373mm (14.69") of precipitation.Snowfall
In Allhallows, United Kingdom, snow does not fall in April through October.Daylight
In September, the average length of the day in Allhallows, United Kingdom, is 12h and 38min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:43 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:37 pm BST.
Sunshine
In September, the average sunshine in Allhallows is 7.9h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Allhallows, United Kingdom
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is August (20.4°C).
The month with the lowest average high temperature is January (7.2°C).
- Average low temperature in September: 13.3°C
The month with the highest average low temperature is August (15.2°C).
The coldest months (with the lowest average low temperature) are January and February (3.8°C).
Average pressure in September
Allhallows, 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 (1010.8mbar).
Average wind speed in September
Allhallows, United Kingdom
- Average wind speed in September: 17.6km/h
The windiest month (with the highest average wind speed) is December (23.5km/h).
The calmest month (with the lowest average wind speed) is July (15.8km/h).
Average humidity in September
Allhallows, United Kingdom
- Average humidity in September: 77%
The month with the highest relative humidity is December (86%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Allhallows, United Kingdom
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is October (43mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Allhallows, United Kingdom
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is November (16.5 days).
The months with the least rainy days are February and September (11.3 days).
Average snowfall in September
Allhallows, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Allhallows, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 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
Allhallows, 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: 7h and 54min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is August (Average sunshine: 8h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Allhallows, United Kingdom
- Average sunshine days in September: 15.3 days
The months with the most sunshine days are April and May (15.5 days).
The month with the least sunshine days is November (9.5 days).
Average UV index in September
Allhallows, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Allhallows, United Kingdom
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 41).
Average visibility in September
Allhallows, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and December (10km).
The months with the lowest visibility are January, February and November (9km).
