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 arrival of September brings an average high-temperature of a mild 15.5°C (59.9°F), closely following the temperature pattern of August. Llanallgo's average low temperature, barely cooler than the daytime high, steadies at a cool 12.7°C (54.9°F) during September.Humidity
In September, the average relative humidity in Llanallgo is 83%.Rainfall
In September, in Llanallgo, the rain falls for 15.4 days. Throughout September, 31mm (1.22") of precipitation is accumulated. In Llanallgo, during the entire year, the rain falls for 196.7 days and collects up to 430mm (16.93") of precipitation.Snowfall
In Llanallgo, snow does not fall in April through October.Daylight
In Llanallgo, the average length of the day in September is 12h and 41min.On the first day of September in Llanallgo, sunrise is at 6:27 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 6:55 pm BST.
Sunshine
In Llanallgo, 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 of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Llanallgo in September?
What is the average humidity in September in Llanallgo?
How much does it rain in Llanallgo in September?
When it does not snow in Llanallgo?
How many hours of daylight does Llanallgo have in September?
When is the sunrise / sunset in September in Llanallgo?
How long on average sun shines in September in Llanallgo?
What are the months with the highest UV index in Llanallgo?
What is the UV index reading in September in Llanallgo?
Average temperature in September
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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
Llanallgo, 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).
