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 transition into September marks the average high-temperature at a still refreshing 16.7°C (62.1°F), differing minimally from August's 18.5°C (65.3°F). Pen-y-clawdd's average low-temperature for the month of September records at a frosty 9.2°C (48.6°F).Humidity
In Pen-y-clawdd, United Kingdom, the average relative humidity in September is 86%.Rainfall
The month with the least rainfall in Pen-y-clawdd is September, when the rain falls for 10.4 days and typically collects 15mm (0.59") of precipitation.Snowfall
In Pen-y-clawdd, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 38min.On the first day of September in Pen-y-clawdd, United Kingdom, sunrise is at 6:24 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:50 pm BST.
Sunshine
In Pen-y-clawdd, United Kingdom, the average sunshine in September is 6.9h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Pen-y-clawdd?
What is the average humidity in September in Pen-y-clawdd?
What is the driest month in Pen-y-clawdd?
How many days does it rain in September in Pen-y-clawdd?
When it does not snow in Pen-y-clawdd?
What is the average length of the day in September in Pen-y-clawdd?
When are sunrise and sunset in September in Pen-y-clawdd?
How long on average sun shines in September in Pen-y-clawdd?
When is the highest UV index in Pen-y-clawdd?
How high is the UV index in September in Pen-y-clawdd?
Average temperature in September
Pen-y-clawdd, United Kingdom
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is July (19.3°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is August (11.4°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in September
Pen-y-clawdd, United Kingdom
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in September
Pen-y-clawdd, United Kingdom
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is February (18.7km/h).
The calmest month (with the lowest average wind speed) is June (12.6km/h).
Average humidity in September
Pen-y-clawdd, United Kingdom
- Average humidity in September: 86%
The months with the highest relative humidity are November and December (90%).
The months with the lowest relative humidity are March, April, May, July and August (84%).
Average rainfall in September
Pen-y-clawdd, United Kingdom
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (37mm).
The driest month (with the least rainfall) is September (15mm).
Average rainfall days in September
Pen-y-clawdd, United Kingdom
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Pen-y-clawdd, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (13mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Pen-y-clawdd, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.2 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
Pen-y-clawdd, 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 5min
The month with the most sunshine is July (Average sunshine: 7h and 36min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days in September
Pen-y-clawdd, United Kingdom
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Pen-y-clawdd, 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
Pen-y-clawdd, United Kingdom
- Average cloud cover in September: 54
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 52).
Average visibility in September
Pen-y-clawdd, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May and December (9km).
The months with the lowest visibility are June, July, August, September, October and November (8km).
