September weather forecastBallygannon, Ireland
September weather forecast for Ballygannon, Ireland: September, the first month of the autumn in Ballygannon, is still a refreshing month, with an average temperature varying between 11.4°C (52.5°F) and 15.1°C (59.2°F). On the first day of September in Ballygannon, sunrise is at 6:36 am and sunset at 8:13 pm.
September
Weather in September
September, the first month of the autumn in Ballygannon, is still a refreshing month, with an average temperature varying between 11.4°C (52.5°F) and 15.1°C (59.2°F).Temperature
Ballygannon records a slight change with September's average high-temperatures adjusting to a moderate 15.1°C (59.2°F) from August's 16.6°C (61.9°F). In Ballygannon, nights during September observe an average temperature decrease to a fresh 11.4°C (52.5°F).Humidity
In September, the average relative humidity is 85%.Rainfall
In September, in Ballygannon, the rain falls for 10.1 days. Throughout September, 18mm (0.71") of precipitation is accumulated. Throughout the year, there are 149.4 rainfall days, and 284mm (11.18") of precipitation is accumulated.Snowfall
In Ballygannon, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 40min.On the first day of September in Ballygannon, sunrise is at 6:36 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:03 pm IST.
Sunshine
In Ballygannon, the average sunshine in September is 7.2h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Be vigilant - Suggestions to stave off sun damage are provided. When the Sun is at its strongest around midday, find shade and limit exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ballygannon, Ireland
- Average high temperature in September: 15.1°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 (7.8°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (4.8°C).
Average pressure in September
Ballygannon, Ireland
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.6mbar).
Average wind speed in September
Ballygannon, Ireland
- Average wind speed in September: 19.5km/h
The windiest month (with the highest average wind speed) is December (26.9km/h).
The calmest month (with the lowest average wind speed) is July (16.6km/h).
Average humidity in September
Ballygannon, Ireland
- Average humidity in September: 85%
The months with the highest relative humidity are June, July and August (86%).
The month with the lowest relative humidity is March (82%).
Average rainfall in September
Ballygannon, Ireland
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is November (38mm).
The driest months (with the least rainfall) are January and May (16mm).
Average rainfall days in September
Ballygannon, Ireland
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is September (10.1 days).
Average snowfall in September
Ballygannon, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (7mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Ballygannon, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 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
Ballygannon, Ireland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 7h and 12min
The months with the most sunshine are May and June (Average sunshine: 7h and 48min).
The months with the least sunshine are February and November (Average sunshine: 4h and 6min).
Average sunshine days in September
Ballygannon, Ireland
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Ballygannon, Ireland
- 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 and November (UV index 2).
Average cloud cover in September
Ballygannon, Ireland
- Average cloud cover in September: 49
The months with the most cloud cover are February and November (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 49).
Average visibility in September
Ballygannon, Ireland
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (10km).
The months with the lowest visibility are May and July (9km).
