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
As Llanilar transitions into September, the average high-temperature stands at a mild 15.4°C (59.7°F), offering little variation from the preceding month. Llanilar's nighttime temperature during September is consistently averaged at a chilly 9.7°C (49.5°F).Humidity
January, August through December, with an average relative humidity of 88%, are the most humid months.Rainfall
In September, in Llanilar, the rain falls for 16.4 days. Throughout September, 53mm (2.09") of precipitation is accumulated. Throughout the year, in Llanilar, there are 212.2 rainfall days, and 781mm (30.75") of precipitation is accumulated.Snowfall
In Llanilar, snow does not fall in May through October.Daylight
The average length of the day in September in Llanilar is 12h and 40min.On the first day of September in Llanilar, sunrise is at 6:28 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:55 pm BST.
Sunshine
In September, the average sunshine is 6.4h.UV index
In Llanilar, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Llanilar?
What are the most humid months in Llanilar?
What is the average humidity in September in Llanilar?
How much does it rain in Llanilar in September?
When it does not snow in Llanilar?
How many hours of daylight does Llanilar have in September?
What time are sunrise and sunset in September in Llanilar?
How long on average sun shines in September in Llanilar?
What is the UV index reading in September in Llanilar?
Average temperature in September
Llanilar, United Kingdom
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is July (17.5°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is August (11.5°C).
The coldest month (with the lowest average low temperature) is January (2.6°C).
Average pressure in September
Llanilar, United Kingdom
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in September
Llanilar, United Kingdom
- Average wind speed in September: 15.4km/h
The windiest month (with the highest average wind speed) is December (21.3km/h).
The calmest month (with the lowest average wind speed) is June (13.5km/h).
Average humidity in September
Llanilar, United Kingdom
- Average humidity in September: 88%
The months with the highest relative humidity are January, August, September, October, November and December (88%).
The month with the lowest relative humidity is April (82%).
Average rainfall in September
Llanilar, United Kingdom
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is December (93mm).
The driest month (with the least rainfall) is May (38mm).
Average rainfall days in September
Llanilar, United Kingdom
- Average rainfall days in September: 16.4 days
The month with the highest number of rainy days is August (20.3 days).
The month with the least rainy days is February (14.4 days).
Average snowfall in September
Llanilar, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (32mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Llanilar, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.9 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
Llanilar, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 30min).
Average sunshine days in September
Llanilar, United Kingdom
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is March (11.8 days).
The month with the least sunshine days is August (7 days).
Average UV index in September
Llanilar, 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, November and December (UV index 2).
Average cloud cover in September
Llanilar, United Kingdom
- Average cloud cover in September: 56
The month with the most cloud cover is December (Cloud cover 66).
The months with the least cloud cover are April and May (Cloud cover 51).
Average visibility in September
Llanilar, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
