September weather forecastLisselton, Ireland
September
Weather in September
The first month of the autumn, September, is also a moderate month in Lisselton, Ireland, with an average temperature fluctuating between 15.6°C (60.1°F) and 10.7°C (51.3°F).Temperature
The transition from August to September sees average high-temperatures adjusting to a moderate 15.6°C (60.1°F), from a not significantly different 16.7°C (62.1°F). The nighttime temperature in Lisselton, Ireland, in September experiences a minor dip, averaging a cool 10.7°C (51.3°F).Humidity
July through October, with an average relative humidity of 86%, are the most humid months in Lisselton.Rainfall
In Lisselton, in September, during 17.7 rainfall days, 46mm (1.81") of precipitation is typically accumulated. In Lisselton, during the entire year, the rain falls for 229.7 days and collects up to 704mm (27.72") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Lisselton is 12h and 40min.On the first day of September in Lisselton, sunrise is at 6:50 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:17 pm IST.
Sunshine
In Lisselton, the average sunshine in September is 5.8h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. To guard against the harmful effects of the Sun, minimize exposure during midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lisselton, Ireland
- Average high temperature in September: 15.6°C
The warmest month (with the highest average high temperature) is July (16.8°C).
The month with the lowest average high temperature is January (8.2°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is February (4.7°C).
Average pressure in September
Lisselton, Ireland
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is May (1016.1mbar).
The month with the lowest atmospheric pressure is November (1008.5mbar).
Average wind speed in September
Lisselton, Ireland
- Average wind speed in September: 17.8km/h
The windiest month (with the highest average wind speed) is December (23.8km/h).
The calmest month (with the lowest average wind speed) is July (15.5km/h).
Average humidity in September
Lisselton, Ireland
- Average humidity in September: 86%
The months with the highest relative humidity are July, August, September and October (86%).
The month with the lowest relative humidity is April (82%).
Average rainfall in September
Lisselton, Ireland
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is December (80mm).
The driest month (with the least rainfall) is May (42mm).
Average rainfall days in September
Lisselton, Ireland
- Average rainfall days in September: 17.7 days
The month with the highest number of rainy days is January (21.8 days).
The month with the least rainy days is April (16.5 days).
Average snowfall in September
Lisselton, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Lisselton, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 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
Lisselton, Ireland
- Average daylight in September: 12h and 42min
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: 5h and 48min
The month with the most sunshine is June (Average sunshine: 7h and 42min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Lisselton, Ireland
- Average sunshine days in September: 9.6 days
The month with the most sunshine days is April (10.8 days).
The month with the least sunshine days is August (6.2 days).
Average UV index in September
Lisselton, Ireland
- Average UV index in September: 3
The months with the highest UV index are May, June and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Lisselton, Ireland
- Average cloud cover in September: 59
The month with the most cloud cover is July (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 53).
Average visibility in September
Lisselton, Ireland
- 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).
