September weather forecastLlithfaen, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Llithfaen, United Kingdom, with an average temperature fluctuating between 13.4°C (56.1°F) and 15.4°C (59.7°F).Temperature
As September takes hold, the average high-temperature is a moderate 15.4°C (59.7°F), nearly mirroring that of the previous month. Llithfaen upholds a consistent average temperature of 13.4°C (56.1°F) throughout the nights of September.Humidity
The average relative humidity in September in Llithfaen is 82%.Rainfall
In Llithfaen, in September, it is raining for 17.9 days, with typically 58mm (2.28") of accumulated precipitation. In Llithfaen, during the entire year, the rain falls for 222.9 days and collects up to 765mm (30.12") of precipitation.Snowfall
In Llithfaen, snow does not fall in April through November.Daylight
In Llithfaen, the average length of the day in September is 12h and 40min.On the first day of September in Llithfaen, sunrise is at 6:28 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:56 pm BST.
Sunshine
In Llithfaen, the average sunshine in September is 6.7h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Llithfaen, United Kingdom
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is August (16.3°C).
The month with the lowest average high temperature is February (7.7°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is February (5.7°C).
Average pressure in September
Llithfaen, United Kingdom
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.9mbar).
Average wind speed in September
Llithfaen, United Kingdom
- Average wind speed in September: 22.6km/h
The windiest month (with the highest average wind speed) is December (30.9km/h).
The calmest month (with the lowest average wind speed) is June (18km/h).
Average humidity in September
Llithfaen, United Kingdom
- Average humidity in September: 82%
The months with the highest relative humidity are June, July and August (84%).
The month with the lowest relative humidity is November (79%).
Average rainfall in September
Llithfaen, United Kingdom
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is November (97mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days in September
Llithfaen, United Kingdom
- Average rainfall days in September: 17.9 days
The month with the highest number of rainy days is December (23.1 days).
The month with the least rainy days is April (14.5 days).
Average snowfall in September
Llithfaen, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (7mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Llithfaen, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Llithfaen, United Kingdom
- Average daylight in September: 12h and 42min
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: 6h and 42min
The month with the most sunshine is May (Average sunshine: 8h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Llithfaen, United Kingdom
- Average sunshine days in September: 9.4 days
The months with the most sunshine days are April and May (13.5 days).
The month with the least sunshine days is December (4.5 days).
Average UV index in September
Llithfaen, 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 and December (UV index 2).
Average cloud cover in September
Llithfaen, United Kingdom
- Average cloud cover in September: 54
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility in September
Llithfaen, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
