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
Old Radnor, United Kingdom, records a slight change with September's average high-temperatures adjusting to a still comfortable 16.5°C (61.7°F) from August's 18.5°C (65.3°F). Old Radnor experiences an average low-temperature reading of 8.6°C (47.5°F) throughout September.Humidity
The average relative humidity in September in Old Radnor is 87%.Rainfall
The month with the least rainfall in Old Radnor is September, when the rain falls for 7.7 days and typically collects 10mm (0.39") of precipitation.Snowfall
In Old Radnor, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 39min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:51 pm BST.
Sunshine
In Old Radnor, the average sunshine in September is 6.4h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Be vigilant - Preventing sunburn is recommended. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
What is the usual temperature for Old Radnor in September?
What is the average humidity in September in Old Radnor?
What is the driest month in Old Radnor?
How much does it rain in Old Radnor in September?
When it does not snow in Old Radnor?
How many hours of daylight does Old Radnor have in September?
What time are sunrise and sunset in September in Old Radnor?
How many hours of sunshine does Old Radnor have in September?
How high is the UV index in September in Old Radnor?
Average temperature in September
Old Radnor, United Kingdom
- Average high temperature in September: 16.5°C
The warmest month (with the highest average high temperature) is July (19.2°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in September: 8.6°C
The months with the highest average low temperature are July and August (10.8°C).
The coldest months (with the lowest average low temperature) are January and February (1.2°C).
Average pressure in September
Old Radnor, United Kingdom
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).
Average wind speed in September
Old Radnor, United Kingdom
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is February (18.1km/h).
The calmest month (with the lowest average wind speed) is June (12.2km/h).
Average humidity in September
Old Radnor, United Kingdom
- Average humidity in September: 87%
The months with the highest relative humidity are November and December (91%).
The months with the lowest relative humidity are April and May (84%).
Average rainfall in September
Old Radnor, United Kingdom
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is June (25mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days in September
Old Radnor, United Kingdom
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in September
Old Radnor, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (9mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Old Radnor, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Old Radnor, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is July (Average sunshine: 7h and 6min).
The month with the least sunshine is November (Average sunshine: 3h and 30min).
Average sunshine days in September
Old Radnor, United Kingdom
- Average sunshine days in September: 19.5 days
The months with the most sunshine days are January and December (20.7 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in September
Old Radnor, 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, March, November and December (UV index 2).
Average cloud cover in September
Old Radnor, United Kingdom
- Average cloud cover in September: 58
The month with the most cloud cover is November (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 55).
Average visibility in September
Old Radnor, 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).
Old Radnor, United Kingdom
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