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
Weather in September
Temperature
September in Swindon reports an average high-temperature of a still enjoyable 17.7°C (63.9°F), slightly varied from August's 19.8°C (67.6°F). Swindon records an average nighttime low of 9.8°C (49.6°F) in September.Humidity
In September, the average relative humidity is 83%.Rainfall
The month with the least rainfall is September, when the rain falls for 12 days and typically collects 22mm (0.87") of precipitation.Snowfall
April through October are months without snowfall in Swindon, United Kingdom.Daylight
In Swindon, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:53 pm. On the last day of September, in Swindon, sunrise is at 7:07 am and sunset at 6:46 pm BST.
Sunshine
In Swindon, United Kingdom, the average sunshine in September is 6.7h.UV index
In September, the average daily maximum UV index in Swindon is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Swindon?
What is the average humidity in September in Swindon?
What is the driest month in Swindon?
How much does it rain in Swindon in September?
When it does not snow in Swindon?
How many hours of daylight does Swindon have in September?
When is the sunrise / sunset in September in Swindon?
How many hours of sunshine does Swindon have in September?
What is the UV index reading in September in Swindon?
Average temperature in September
Swindon, United Kingdom
- Average high temperature in September: 17.7°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: 9.8°C
The month with the highest average low temperature is August (12°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in September
Swindon, United Kingdom
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).
Average wind speed in September
Swindon, United Kingdom
- Average wind speed in September: 13.3km/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 (13.1km/h).
Average humidity in September
Swindon, United Kingdom
- Average humidity in September: 83%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are July and August (81%).
Average rainfall in September
Swindon, United Kingdom
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is June (39mm).
The driest month (with the least rainfall) is September (22mm).
Average rainfall days in September
Swindon, United Kingdom
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in September
Swindon, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (20mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Swindon, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 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
Swindon, United Kingdom
- Average daylight in September: 12h and 4min
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 4min
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 36min).
Average sunshine days in September
Swindon, United Kingdom
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is December (16.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in September
Swindon, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Swindon, United Kingdom
- Average cloud cover in September: 54
The month with the most cloud cover is November (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 53).
Average visibility in September
Swindon, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are February, March and July (9km).
The months with the lowest visibility are January, April, May, June, August, September, October, November and December (8km).
Swindon, United Kingdom
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