September weather forecastLisburn, United Kingdom
September
Weather in September
September, the first month of the autumn in Lisburn, is still a refreshing month, with temperature in the range of an average low of 9.1°C (48.4°F) and an average high of 14.9°C (58.8°F).Temperature
The transition into September shows a subtle variation to a moderate 14.9°C (58.8°F) from August's 16.8°C (62.2°F) in the average high-temperature. An average low-temperature of 9.1°C (48.4°F) is expected during September.Humidity
In September, the average relative humidity in Lisburn is 89%.Rainfall
In Lisburn, in September, during 17.5 rainfall days, 45mm (1.77") of precipitation is typically accumulated. Throughout the year, in Lisburn, there are 228 rainfall days, and 691mm (27.2") of precipitation is accumulated.Snowfall
In Lisburn, United Kingdom, snow does not fall in April through November.Daylight
In September, the average length of the day in Lisburn is 12h and 42min.On the first day of September, sunrise is at 6:32 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:02 pm BST.
Sunshine
In September, the average sunshine is 5.2h.UV index
In Lisburn, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. The solar radiation around mid-day is intense; avoid the Sun and stay safe. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lisburn, United Kingdom
- Average high temperature in September: 14.9°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is January (6.2°C).
- Average low temperature in September: 9.1°C
The month with the highest average low temperature is August (10.7°C).
The coldest month (with the lowest average low temperature) is February (2°C).
Average pressure in September
Lisburn, United Kingdom
- Average pressure in September: 1014.3mbar
The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.3mbar).
Average wind speed in September
Lisburn, United Kingdom
- Average wind speed in September: 14.5km/h
The windiest month (with the highest average wind speed) is January (18.5km/h).
The calmest months (with the lowest average wind speed) are June and July (12.5km/h).
Average humidity in September
Lisburn, United Kingdom
- Average humidity in September: 89%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are April and May (84%).
Average rainfall in September
Lisburn, United Kingdom
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is August (82mm).
The driest month (with the least rainfall) is January (43mm).
Average rainfall days in September
Lisburn, United Kingdom
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (26 days).
The month with the least rainy days is January (15.8 days).
Average snowfall in September
Lisburn, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (33mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Lisburn, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 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
Lisburn, 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 12min
The month with the most sunshine is June (Average sunshine: 6h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Lisburn, United Kingdom
- Average sunshine days in September: 8.1 days
The month with the most sunshine days is December (11.9 days).
The month with the least sunshine days is August (3.2 days).
Average UV index in September
Lisburn, 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
Lisburn, United Kingdom
- Average cloud cover in September: 64
The months with the most cloud cover are July and August (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in September
Lisburn, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are March, April, November and December (9km).
The months with the lowest visibility are January, February, May, June, July, August, September and October (8km).
