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 weather during September records an average high-temperature of a still refreshing 15.4°C (59.7°F), closely mirroring the preceding month. Llandderfel experiences a mean temperature of 7.9°C (46.2°F) during September nights.Humidity
The average relative humidity in September in Llandderfel is 89%.Rainfall
September is the month with the least rainfall in Llandderfel, United Kingdom. Rain falls for 16.5 days and accumulates 36mm (1.42") of precipitation.Snowfall
In Llandderfel, snow does not fall in June through October.Daylight
In September, the average length of the day is 12h and 40min.On the first day of September in Llandderfel, sunrise is at 6:25 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:53 pm BST.
Sunshine
In September, the average sunshine is 4.8h.UV index
The average daily maximum UV index in September in Llandderfel is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What are September temperatures in Llandderfel?
What is the average humidity in September in Llandderfel?
What is the driest month in Llandderfel?
How much does it rain in Llandderfel in September?
When it does not snow in Llandderfel?
How many hours of daylight does Llandderfel have in September?
When are sunrise and sunset in September in Llandderfel?
How long on average sun shines in September in Llandderfel?
How high is the UV index in September in Llandderfel?
Average temperature in September
Llandderfel, United Kingdom
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is July (18°C).
The month with the lowest average high temperature is January (5.4°C).
- Average low temperature in September: 7.9°C
The months with the highest average low temperature are July and August (9.9°C).
The coldest month (with the lowest average low temperature) is February (0.6°C).
Average pressure in September
Llandderfel, United Kingdom
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is May (1016.3mbar).
The month with the lowest atmospheric pressure is November (1009.2mbar).
Average wind speed in September
Llandderfel, United Kingdom
- Average wind speed in September: 11.4km/h
The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is June (10.5km/h).
Average humidity in September
Llandderfel, United Kingdom
- Average humidity in September: 89%
The month with the highest relative humidity is November (93%).
The months with the lowest relative humidity are April and May (84%).
Average rainfall in September
Llandderfel, United Kingdom
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is September (36mm).
Average rainfall days in September
Llandderfel, United Kingdom
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is July (21.9 days).
The months with the least rainy days are January and February (15 days).
Average snowfall in September
Llandderfel, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Llandderfel, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Llandderfel, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 4h and 5min
The month with the most sunshine is July (Average sunshine: 5h and 54min).
The month with the least sunshine is November (Average sunshine: 2h and 36min).
Average sunshine days in September
Llandderfel, United Kingdom
- Average sunshine days in September: 9.3 days
The month with the most sunshine days is January (10.9 days).
The month with the least sunshine days is July (5.4 days).
Average UV index in September
Llandderfel, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June and August (UV index 4).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Llandderfel, United Kingdom
- Average cloud cover in September: 71
The month with the most cloud cover is November (Cloud cover 77).
The month with the least cloud cover is April (Cloud cover 64).
Average visibility in September
Llandderfel, United Kingdom
- Average visibility in September: 6km
The months with the highest visibility are January, February, March, April, May, June, July, August and December (7km).
The months with the lowest visibility are September, October and November (6km).
Llandderfel, United Kingdom
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