September weather forecastAsthall, United Kingdom
September
Weather in September
September, the first month of the autumn in Asthall, is also an enjoyable month, with an average temperature varying between 9.9°C (49.8°F) and 17.6°C (63.7°F).Temperature
The advent of September sees the average high-temperature at a comfortable 17.6°C (63.7°F), subtly shifted from August's 20.1°C (68.2°F). Nighttime temperatures consistently average a frosty 9.9°C (49.8°F) during September.Humidity
In Asthall, the average relative humidity in September is 82%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 23mm (0.91") of precipitation is accumulated. Throughout the year, there are 178.1 rainfall days, and 375mm (14.76") of precipitation is accumulated.Snowfall
In Asthall, snow does not fall in April through October.Daylight
In Asthall, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:52 pm. On the last day of September, in Asthall, sunrise is at 7:06 am and sunset at 6:45 pm BST.
Sunshine
The average sunshine in September in Asthall is 6.8h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Asthall, United Kingdom
- Average high temperature in September: 17.6°C
The warmest month (with the highest average high temperature) is July (20.5°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in September
Asthall, United Kingdom
- Average pressure in September: 1016.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.1mbar).
Average wind speed in September
Asthall, United Kingdom
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is February (18.4km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in September
Asthall, United Kingdom
- Average humidity in September: 82%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (80%).
Average rainfall in September
Asthall, United Kingdom
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is June (45mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Asthall, United Kingdom
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Asthall, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Asthall, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Asthall, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 6h and 48min
The month with the most sunshine is July (Average sunshine: 7h and 24min).
The months with the least sunshine are February and November (Average sunshine: 3h and 42min).
Average sunshine days in September
Asthall, United Kingdom
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is June (7.1 days).
Average UV index in September
Asthall, 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
Asthall, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is November (Cloud cover 64).
The months with the least cloud cover are April and September (Cloud cover 53).
Average visibility in September
Asthall, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, July, August and December (9km).
The months with the lowest visibility are April, May, June, September, October and November (8km).
