September weather forecastBallybay, Ireland
September
Weather in September
The first month of the autumn, September, is still a mild month in Ballybay, Ireland, with an average temperature fluctuating between 8.2°C (46.8°F) and 14.9°C (58.8°F).Temperature
The weather during September records an average high-temperature of a mild 14.9°C (58.8°F), closely mirroring the preceding month. The nighttime temperature dips to a frosty 8.2°C (46.8°F) on average during September.Humidity
In Ballybay, the average relative humidity in September is 90%.Rainfall
The month with the least rainfall in Ballybay, Ireland, is September, when the rain falls for 11.2 days and typically collects 14mm (0.55") of precipitation.Snowfall
In Ballybay, snow does not fall in April through November.Daylight
In September, the average length of the day in Ballybay is 12h and 41min.On the first day of September, sunrise is at 6:36 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:05 pm IST.
Sunshine
In September, the average sunshine in Ballybay is 4.8h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Prioritize safety - Recommendations to avert sunburn are shared. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ballybay, Ireland
- Average high temperature in September: 14.9°C
The warmest month (with the highest average high temperature) is July (17.2°C).
The month with the lowest average high temperature is January (5.9°C).
- Average low temperature in September: 8.2°C
The month with the highest average low temperature is July (9.9°C).
The coldest months (with the lowest average low temperature) are January and February (1.3°C).
Average pressure in September
Ballybay, Ireland
- 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
Ballybay, Ireland
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is January (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.2km/h).
Average humidity in September
Ballybay, Ireland
- Average humidity in September: 90%
The months with the highest relative humidity are January, November and December (92%).
The month with the lowest relative humidity is April (86%).
Average rainfall in September
Ballybay, Ireland
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is August (34mm).
The driest month (with the least rainfall) is September (14mm).
Average rainfall days in September
Ballybay, Ireland
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is September (11.2 days).
Average snowfall in September
Ballybay, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (20mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Ballybay, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Ballybay, Ireland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 4h and 48min
The month with the most sunshine is June (Average sunshine: 6h and 6min).
The months with the least sunshine are January, February and October (Average sunshine: 3h and 24min).
Average sunshine days in September
Ballybay, Ireland
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is October (12.9 days).
The month with the least sunshine days is July (7 days).
Average UV index in September
Ballybay, Ireland
- Average UV index in September: 3
The month with the highest UV index is June (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Ballybay, Ireland
- Average cloud cover in September: 69
The month with the most cloud cover is August (Cloud cover 73).
The month with the least cloud cover is April (Cloud cover 62).
Average visibility in September
Ballybay, Ireland
- Average visibility in September: 7km
The month with the highest visibility is March (9km).
The months with the lowest visibility are July, August and September (7km).
