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
Knowstone transitions into September recording an average high-temperature of a still comfortable 16.8°C (62.2°F), closely aligning with the preceding month's temperature. Knowstone records an average low-temperature of 10.1°C (50.2°F) throughout the month of September.Humidity
The average relative humidity in September is 86%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.1 days and typically collects 15mm (0.59") of precipitation.Snowfall
In Knowstone, snow does not fall in May through October.Daylight
In September, the average length of the day in Knowstone is 12h and 38min.On the first day of September, sunrise is at 6:29 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:54 pm BST.
Sunshine
The average sunshine in September is 6.3h.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 threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Act with care - The suggestion to avoid sunburn is emphasized. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Knowstone in September?
What is the average humidity in September in Knowstone?
What is the driest month in Knowstone?
How much does it rain in Knowstone in September?
When it does not snow in Knowstone?
What is the average length of the day in September in Knowstone?
What time are sunrise and sunset in September in Knowstone?
How long on average sun shines in September in Knowstone?
What are the months with the highest UV index in Knowstone?
What is the UV index reading in September in Knowstone?
Average temperature in September
Knowstone, United Kingdom
- Average high temperature in September: 16.8°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (7.2°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is February (2.8°C).
Average pressure in September
Knowstone, 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 (1010.1mbar).
Average wind speed in September
Knowstone, United Kingdom
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is February (21.2km/h).
The calmest month (with the lowest average wind speed) is July (14.3km/h).
Average humidity in September
Knowstone, United Kingdom
- Average humidity in September: 86%
The month with the highest relative humidity is November (89%).
The months with the lowest relative humidity are April, May and July (84%).
Average rainfall in September
Knowstone, United Kingdom
- Average rainfall in September: 15mm
The wettest months (with the highest rainfall) are November and December (31mm).
The driest month (with the least rainfall) is September (15mm).
Average rainfall days in September
Knowstone, United Kingdom
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is September (10.1 days).
Average snowfall in September
Knowstone, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Knowstone, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Knowstone, 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: 6h and 2min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is November (Average sunshine: 3h and 24min).
Average sunshine days in September
Knowstone, United Kingdom
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is August (10.3 days).
Average UV index in September
Knowstone, 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, March, November and December (UV index 2).
Average cloud cover in September
Knowstone, United Kingdom
- Average cloud cover in September: 58
The month with the most cloud cover is November (Cloud cover 67).
The months with the least cloud cover are April and May (Cloud cover 52).
Average visibility in September
Knowstone, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (9km).
The months with the lowest visibility are August and September (8km).
