September weather forecastGlenavy, United Kingdom
September weather for Glenavy, United Kingdom: On the first day of September in Glenavy, United Kingdom, sunrise is at 6:33 am and sunset at 8:16 pm. In Glenavy, United Kingdom, in September, during 10 rainfall days, 12mm (0.47") of precipitation is typically accumulated.
September
Weather in September
September, the first month of the autumn in Glenavy, is still a refreshing month, with an average temperature varying between 9.3°C (48.7°F) and 14.8°C (58.6°F).Temperature
As Glenavy welcomes September, the average high-temperature records at a moderate 14.8°C (58.6°F), marking an insignificant deviation from the prior month. Throughout September, Glenavy encounters an average temperature drop to a chilly 9.3°C (48.7°F).Humidity
The average relative humidity in September is 88%.Rainfall
In Glenavy, United Kingdom, in September, during 10 rainfall days, 12mm (0.47") of precipitation is typically accumulated. In Glenavy, during the entire year, the rain falls for 138.5 days and collects up to 195mm (7.68") of precipitation.Snowfall
In Glenavy, snow does not fall in April through November.Daylight
In Glenavy, United Kingdom, the average length of the day in September is 12h and 43min.On the first day of September in Glenavy, United Kingdom, sunrise is at 6:33 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:03 pm BST.
Sunshine
In Glenavy, United Kingdom, the average sunshine in September is 5.6h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 3 in September translates into this advice:
Exercise prevention - Precautions against solar damage are endorsed. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Glenavy, United Kingdom
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (17°C).
The month with the lowest average high temperature is January (6.2°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is August (10.8°C).
The coldest month (with the lowest average low temperature) is February (2.2°C).
Average pressure in September
Glenavy, United Kingdom
- Average pressure in September: 1014.1mbar
The month with the highest atmospheric pressure is May (1015.5mbar).
The month with the lowest atmospheric pressure is November (1007.2mbar).
Average wind speed in September
Glenavy, United Kingdom
- Average wind speed in September: 15.4km/h
The windiest month (with the highest average wind speed) is January (19.9km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in September
Glenavy, United Kingdom
- Average humidity in September: 88%
The months with the highest relative humidity are January and December (90%).
The months with the lowest relative humidity are April and May (84%).
Average rainfall in September
Glenavy, United Kingdom
- Average rainfall in September: 12mm
The wettest months (with the highest rainfall) are June and August (23mm).
The driest months (with the least rainfall) are January and May (11mm).
Average rainfall days in September
Glenavy, United Kingdom
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in September
Glenavy, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (13mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Glenavy, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 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
Glenavy, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 5h and 36min
The month with the most sunshine is June (Average sunshine: 7h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in September
Glenavy, United Kingdom
- Average sunshine days in September: 16.2 days
The months with the most sunshine days are May and December (16.3 days).
The month with the least sunshine days is August (12 days).
Average UV index in September
Glenavy, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are June 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
Glenavy, United Kingdom
- Average cloud cover in September: 61
The month with the most cloud cover is July (Cloud cover 65).
The month with the least cloud cover is April (Cloud cover 57).
Average visibility in September
Glenavy, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, September, October, November and December (9km).
The months with the lowest visibility are June, July and August (8km).
