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
The advent of September presents an average high-temperature of an enjoyable 17.8°C (64°F), maintaining a close correlation with the preceding month. Knook's September nights cool down to an average low-temperature of 10.1°C (50.2°F).Humidity
The average relative humidity in September in Knook is 83%.Rainfall
September is the month with the least rainfall in Knook. Rain falls for 12.4 days and accumulates 23mm (0.91") of precipitation.Snowfall
April through October are months without snowfall in Knook.Daylight
The average length of the day in September is 12h and 38min.On the first day of September in Knook, sunrise is at 6:22 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:48 pm BST.
Sunshine
In Knook, United Kingdom, the average sunshine in September is 7.1h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Knook?
What is the average humidity in September in Knook?
What is the driest month in Knook?
How many days does it rain in September in Knook?
When it does not snow in Knook?
How many hours of daylight does Knook have in September?
When is the sunrise / sunset in September in Knook?
How long on average sun shines in September in Knook?
When is the highest UV index in Knook?
What is the UV index reading in September in Knook?
Average temperature in September
Knook, United Kingdom
- Average high temperature in September: 17.8°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 10.1°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 (1.9°C).
Average pressure in September
Knook, United Kingdom
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Knook, United Kingdom
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is February (17.2km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity in September
Knook, United Kingdom
- Average humidity in September: 83%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is July (80%).
Average rainfall in September
Knook, United Kingdom
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is December (52mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in September
Knook, United Kingdom
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is September (12.4 days).
Average snowfall in September
Knook, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Knook, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Knook, United Kingdom
- Average daylight in September: 12h and 4min
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: 7h and 1min
The month with the most sunshine is July (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Knook, United Kingdom
- Average sunshine days in September: 13.7 days
The months with the most sunshine days are March and September (13.7 days).
The month with the least sunshine days is August (9.1 days).
Average UV index in September
Knook, 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
Knook, United Kingdom
- Average cloud cover in September: 51
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 51).
Average visibility in September
Knook, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are February and March (9km).
The months with the lowest visibility are January, April, May, June, July, August, September, October, November and December (8km).
