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
The onset of September manifests an average high-temperature of a mild 15.9°C (60.6°F), demonstrating a minor variation from the preceding month. Llangrannog registers an average low-temperature of 11.9°C (53.4°F) throughout September, a modest decrease from its daytime highs.Humidity
In September, the average relative humidity is 84%.Rainfall
In Llangrannog, in September, it is raining for 14.8 days, with typically 32mm (1.26") of accumulated precipitation. In Llangrannog, during the entire year, the rain falls for 198.1 days and collects up to 426mm (16.77") of precipitation.Snowfall
In Llangrannog, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 39min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:18 am and sunset at 6:57 pm BST.
Sunshine
In September, the average sunshine is 6.7h.UV index
The months with the highest UV index in Llangrannog are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Llangrannog in September?
What is the average humidity in September in Llangrannog?
How many days does it rain in September in Llangrannog?
When it does not snow in Llangrannog?
What is the average length of the day in September in Llangrannog?
When are sunrise and sunset in September in Llangrannog?
How many hours of sunshine does Llangrannog have in September?
What are the months with the highest UV index in Llangrannog?
What is the UV index reading in September in Llangrannog?
Average temperature in September
Llangrannog, United Kingdom
- Average high temperature in September: 15.9°C
The warmest month (with the highest average high temperature) is July (17.6°C).
The month with the lowest average high temperature is February (7.7°C).
- Average low temperature in September: 11.9°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in September
Llangrannog, United Kingdom
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in September
Llangrannog, United Kingdom
- Average wind speed in September: 18.3km/h
The windiest month (with the highest average wind speed) is December (24.6km/h).
The calmest month (with the lowest average wind speed) is June (15.2km/h).
Average humidity in September
Llangrannog, United Kingdom
- Average humidity in September: 84%
The months with the highest relative humidity are January, July, August and December (85%).
The months with the lowest relative humidity are April and May (82%).
Average rainfall in September
Llangrannog, United Kingdom
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is November (53mm).
The driest month (with the least rainfall) is May (20mm).
Average rainfall days in September
Llangrannog, United Kingdom
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is November (20.1 days).
The month with the least rainy days is April (13.5 days).
Average snowfall in September
Llangrannog, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is December (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Llangrannog, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (1.3 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
Llangrannog, 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 4min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in September
Llangrannog, United Kingdom
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is April (14.3 days).
The month with the least sunshine days is November (6.8 days).
Average UV index in September
Llangrannog, 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, March and December (UV index 2).
Average cloud cover in September
Llangrannog, 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 48).
Average visibility in September
Llangrannog, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, September, October and November (10km).
The months with the lowest visibility are January, April, May, June, July, August and December (9km).
