September weather forecastLlanbabo, United Kingdom
September weather for Llanbabo, United Kingdom: May through September, with an average maximum UV index of 4, are months with the highest UV index in Llanbabo, United Kingdom. September, the first month of the autumn in Llanbabo, is still a refreshing month, with an average temperature fluctuating between 12.7°C (54.9°F) and 15.5°C (59.9°F).
September
Weather in September
September, the first month of the autumn in Llanbabo, is still a refreshing month, with an average temperature fluctuating between 12.7°C (54.9°F) and 15.5°C (59.9°F).Temperature
September's onset sees an average high-temperature of a moderate 15.5°C (59.9°F), exhibiting a slight fluctuation from the previous month. Llanbabo records a slight downturn to an average a fresh 12.7°C (54.9°F) during the nights of September.Humidity
In September, the average relative humidity in Llanbabo is 83%.Rainfall
In Llanbabo, during September, the rain falls for 15.4 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, in Llanbabo, United Kingdom, there are 196.7 rainfall days, and 430mm (16.93") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Llanbabo, United Kingdom, the average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 6:28 am and sunset at 8:06 pm. On the last day of September, in Llanbabo, sunrise is at 7:18 am and sunset at 6:56 pm BST.
Sunshine
In Llanbabo, the average sunshine in September is 6.8h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Take precautions - Protection against sun damage is advised. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Llanbabo, United Kingdom
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is August (16.6°C).
The month with the lowest average high temperature is February (7.3°C).
- Average low temperature in September: 12.7°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°C).
Average pressure in September
Llanbabo, United Kingdom
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is May (1016.1mbar).
The month with the lowest atmospheric pressure is November (1008.7mbar).
Average wind speed in September
Llanbabo, United Kingdom
- Average wind speed in September: 21.4km/h
The windiest month (with the highest average wind speed) is December (28.6km/h).
The calmest month (with the lowest average wind speed) is June (17.2km/h).
Average humidity in September
Llanbabo, United Kingdom
- Average humidity in September: 83%
The months with the highest relative humidity are July and August (84%).
The months with the lowest relative humidity are April and November (80%).
Average rainfall in September
Llanbabo, United Kingdom
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is November (51mm).
The driest months (with the least rainfall) are April and May (21mm).
Average rainfall days in September
Llanbabo, United Kingdom
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is June (13.2 days).
Average snowfall in September
Llanbabo, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (10mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Llanbabo, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 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
Llanbabo, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 6h and 48min
The month with the most sunshine is May (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Llanbabo, United Kingdom
- Average sunshine days in September: 11 days
The month with the most sunshine days is June (14.7 days).
The month with the least sunshine days is December (6.2 days).
Average UV index in September
Llanbabo, 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
Llanbabo, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is May (Cloud cover 46).
Average visibility in September
Llanbabo, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
