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
In Llanfaelog, September's average high-temperature stands at a still refreshing 15.5°C (59.9°F), closely related to the preceding month. Nights in Llanfaelog during September maintain a steady temperature, averaging at a still moderate 13.5°C (56.3°F).Humidity
In Llanfaelog, the average relative humidity in September is 81%.Rainfall
In Llanfaelog, United Kingdom, in September, during 19.5 rainfall days, 61mm (2.4") of precipitation is typically accumulated. In Llanfaelog, during the entire year, the rain falls for 233.6 days and collects up to 739mm (29.09") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Llanfaelog is 12h and 40min.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 Llanfaelog, sunrise is at 7:18 am and sunset at 6:56 pm BST.
Sunshine
In September, the average sunshine is 6.8h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index in Llanfaelog. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Llanfaelog?
What is the average humidity in September in Llanfaelog?
How much does it rain in Llanfaelog in September?
When it does not snow in Llanfaelog?
How many hours of daylight does Llanfaelog have in September?
When are sunrise and sunset in September in Llanfaelog?
How many hours of sunshine does Llanfaelog have in September?
What is the month with the highest UV index in Llanfaelog?
What is the UV index intensity in September in Llanfaelog?
Average temperature in September
Llanfaelog, 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 (7.8°C).
- Average low temperature in September: 13.5°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).
Average pressure in September
Llanfaelog, United Kingdom
- Average pressure in September: 1015.6mbar
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
Llanfaelog, United Kingdom
- Average wind speed in September: 23.5km/h
The windiest month (with the highest average wind speed) is December (31.3km/h).
The calmest month (with the lowest average wind speed) is June (18.7km/h).
Average humidity in September
Llanfaelog, United Kingdom
- Average humidity in September: 81%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is November (79%).
Average rainfall in September
Llanfaelog, United Kingdom
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is May (36mm).
Average rainfall days in September
Llanfaelog, United Kingdom
- Average rainfall days in September: 19.5 days
The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is April (15.6 days).
Average snowfall in September
Llanfaelog, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and December (4mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Llanfaelog, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Llanfaelog, United Kingdom
- Average daylight in September: 12h and 4min
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 5min
The month with the most sunshine is May (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Llanfaelog, United Kingdom
- Average sunshine days in September: 8.1 days
The month with the most sunshine days is May (12.3 days).
The month with the least sunshine days is December (4.3 days).
Average UV index in September
Llanfaelog, 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 and December (UV index 2).
Average cloud cover in September
Llanfaelog, 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
Llanfaelog, 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).
Llanfaelog, United Kingdom
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