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 onset of September notes an average high-temperature of an enjoyable 17.8°C (64°F), subtly shifted from August's 20.2°C (68.4°F). Throughout September, the average low-temperature in Rollestone records at a cool 10.1°C (50.2°F).Humidity
The average relative humidity in September is 83%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.4 days and typically collects 23mm (0.91") of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Rollestone, United Kingdom, is 12h and 38min.On the first day of September in Rollestone, sunrise is at 6:21 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:47 pm BST.
Sunshine
The average sunshine in September in Rollestone is 7.1h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index in Rollestone. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Rollestone in September?
What is the average humidity in September in Rollestone?
What is the driest month in Rollestone?
How many days does it rain in September in Rollestone?
When it does not snow in Rollestone?
What is the average length of the day in September in Rollestone?
What time are sunrise and sunset in September in Rollestone?
How long on average sun shines in September in Rollestone?
What is the month with the highest UV index in Rollestone?
What is the UV index intensity in September in Rollestone?
Average temperature in September
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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
Rollestone, 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).
