Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
As West Dereham steps into September, the average high-temperature is measured at a refreshing 18°C (64.4°F), displaying minor differences from August's 20.4°C (68.7°F). September's average low-temperature reading settles at a fresh 11.6°C (52.9°F).Humidity
In September, the average relative humidity in West Dereham, United Kingdom, is 79%.Rainfall
In West Dereham, in September, during 12 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, in West Dereham, United Kingdom, there are 173.5 rainfall days, and 370mm (14.57") of precipitation is accumulated.Snowfall
In West Dereham, snow does not fall in April through October.Daylight
In West Dereham, the average length of the day in September is 12h and 40min.On the first day of September in West Dereham, United Kingdom, sunrise is at 6:10 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:37 pm BST.
Sunshine
In September, the average sunshine is 7.5h.UV index
The average daily maximum UV index in September in West Dereham, United Kingdom, is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in West Dereham?
What is the average humidity in September in West Dereham?
How many days does it rain in September in West Dereham?
When it does not snow in West Dereham?
What is the average length of the day in September in West Dereham?
What time are sunrise and sunset in September in West Dereham?
How many hours of sunshine does West Dereham have in September?
What is the UV index reading in September in West Dereham?
Average temperature in September
West Dereham, United Kingdom
- Average high temperature in September: 18°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 (6.1°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).
Average pressure in September
West Dereham, United Kingdom
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.9mbar).
Average wind speed in September
West Dereham, United Kingdom
- Average wind speed in September: 15.1km/h
The windiest month (with the highest average wind speed) is December (20.7km/h).
The calmest month (with the lowest average wind speed) is July (13.5km/h).
Average humidity in September
West Dereham, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
West Dereham, United Kingdom
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
West Dereham, United Kingdom
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
West Dereham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (26mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
West Dereham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
West Dereham, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is August (Average sunshine: 8h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
West Dereham, United Kingdom
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
West Dereham, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is 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
West Dereham, United Kingdom
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 45).
Average visibility in September
West Dereham, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is March (10km).
The months with the lowest visibility are January, February, April, May, June, July, August, September, October, November and December (9km).
