September weather forecastKillanena, Ireland
September
Weather in September
September, the first month of the autumn in Killanena, is still a refreshing month, with an average temperature varying between 9.4°C (48.9°F) and 15.8°C (60.4°F).Temperature
The transition into September notes an average high-temperature of a moderate 15.8°C (60.4°F), revealing a mild distinction from the 17.4°C (63.3°F) in August. September brings with it a nighttime average temperature of 9.4°C (48.9°F) in Killanena.Humidity
In September, the average relative humidity in Killanena is 88%.Rainfall
September is the month with the least rainfall in Killanena. Rain falls for 13.2 days and accumulates 20mm (0.79") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Killanena, the average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 6:46 am and sunset at 8:23 pm. On the last day of September, in Killanena, Ireland, sunrise is at 7:35 am and sunset at 7:13 pm IST.
Sunshine
In September, the average sunshine in Killanena, Ireland, is 5.5h.UV index
In Killanena, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Killanena, Ireland
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is January (7.8°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is August (11.2°C).
The coldest month (with the lowest average low temperature) is February (2.9°C).
Average pressure in September
Killanena, Ireland
- Average pressure in September: 1015.3mbar
The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1008.1mbar).
Average wind speed in September
Killanena, Ireland
- Average wind speed in September: 15.4km/h
The windiest month (with the highest average wind speed) is January (20.2km/h).
The calmest month (with the lowest average wind speed) is July (14km/h).
Average humidity in September
Killanena, Ireland
- Average humidity in September: 88%
The months with the highest relative humidity are November and December (89%).
The month with the lowest relative humidity is April (84%).
Average rainfall in September
Killanena, Ireland
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is August (39mm).
The driest month (with the least rainfall) is September (20mm).
Average rainfall days in September
Killanena, Ireland
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Killanena, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Killanena, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Killanena, 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: 5h and 30min
The month with the most sunshine is June (Average sunshine: 7h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Killanena, Ireland
- Average sunshine days in September: 11 days
The month with the most sunshine days is December (13.9 days).
The month with the least sunshine days is August (5.9 days).
Average UV index in September
Killanena, Ireland
- Average UV index in September: 3
The months with the highest UV index are May and June (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
Killanena, Ireland
- Average cloud cover in September: 62
The month with the most cloud cover is July (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 56).
Average visibility in September
Killanena, Ireland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (9km).
The months with the lowest visibility are July, August and September (8km).
