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
The transition into September marks the average high-temperature at a still comfortable 17°C (62.6°F), differing minimally from August's 18.6°C (65.5°F). The temperature in Duffryn lowers to an average of 11.2°C (52.2°F) during September nights.Humidity
In September, the average relative humidity in Duffryn is 83%.Rainfall
In Duffryn, in September, it is raining for 13.7 days, with typically 31mm (1.22") of accumulated precipitation. In Duffryn, during the entire year, the rain falls for 184.4 days and collects up to 507mm (19.96") of precipitation.Snowfall
April through October are months without snowfall in Duffryn.Daylight
In Duffryn, the average length of the day in September is 12h and 38min.On the first day of September in Duffryn, sunrise is at 6:25 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:51 pm BST.
Sunshine
The average sunshine in September is 7.3h.UV index
The months with the highest UV index in Duffryn are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the average September temperature in Duffryn?
What is the average humidity in September in Duffryn?
How many days does it rain in September in Duffryn?
When it does not snow in Duffryn?
What is the average length of the day in September in Duffryn?
When is the sunrise / sunset in September in Duffryn?
How long on average sun shines in September in Duffryn?
What is the month with the highest UV index in Duffryn?
How high is the UV index in September in Duffryn?
Average temperature in September
Duffryn, United Kingdom
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (18.9°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is February (3.6°C).
Average pressure in September
Duffryn, United Kingdom
- Average pressure in September: 1016.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.9mbar).
Average wind speed in September
Duffryn, United Kingdom
- Average wind speed in September: 16km/h
The windiest month (with the highest average wind speed) is February (22km/h).
The calmest months (with the lowest average wind speed) are June and July (14.9km/h).
Average humidity in September
Duffryn, United Kingdom
- Average humidity in September: 83%
The months with the highest relative humidity are January, November and December (86%).
The months with the lowest relative humidity are March, April and May (82%).
Average rainfall in September
Duffryn, United Kingdom
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is November (64mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Duffryn, United Kingdom
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is November (18.8 days).
The month with the least rainy days is April (12.7 days).
Average snowfall in September
Duffryn, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Duffryn, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.6 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
Duffryn, 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: 7h and 2min
The month with the most sunshine is July (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 4h and 0min).
Average sunshine days in September
Duffryn, United Kingdom
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is April (14.7 days).
The month with the least sunshine days is November (8 days).
Average UV index in September
Duffryn, 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
Duffryn, United Kingdom
- Average cloud cover in September: 49
The month with the most cloud cover is November (Cloud cover 60).
The months with the least cloud cover are April and May (Cloud cover 47).
Average visibility in September
Duffryn, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Duffryn, United Kingdom
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