September weather forecastCloonacool, Ireland
September
Weather in September
The first month of the autumn, September, is also a moderate month in Cloonacool, Ireland, with an average temperature varying between 15.3°C (59.5°F) and 9°C (48.2°F).Temperature
At the onset of September, Cloonacool records an average high-temperature of a mild 15.3°C (59.5°F), showing little deviation from the preceding month. An average nighttime temperature of 9°C (48.2°F) is noted in Cloonacool during the month of September.Humidity
In Cloonacool, the average relative humidity in September is 89%.Rainfall
The months with the least rainfall are April and September Rain falls for 21.3 days and accumulates 51mm (2.01") of rain.Snowfall
In Cloonacool, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 6:44 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:13 pm IST.
Sunshine
In Cloonacool, Ireland, the average sunshine in September is 5h.UV index
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 the ordinary person.Note: The daily high UV index of 3 in September translates into this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cloonacool, Ireland
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (17°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in September: 9°C
The month with the highest average low temperature is August (10.5°C).
The coldest month (with the lowest average low temperature) is February (2.5°C).
Average pressure in September
Cloonacool, Ireland
- Average pressure in September: 1014.3mbar
The month with the highest atmospheric pressure is May (1015.5mbar).
The month with the lowest atmospheric pressure is November (1007.2mbar).
Average wind speed in September
Cloonacool, Ireland
- Average wind speed in September: 14.8km/h
The windiest month (with the highest average wind speed) is January (19.7km/h).
The calmest month (with the lowest average wind speed) is July (13.1km/h).
Average humidity in September
Cloonacool, Ireland
- Average humidity in September: 89%
The months with the highest relative humidity are November and December (90%).
The month with the lowest relative humidity is April (84%).
Average rainfall in September
Cloonacool, Ireland
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is August (96mm).
The driest months (with the least rainfall) are April and September (51mm).
Average rainfall days in September
Cloonacool, Ireland
- Average rainfall days in September: 21.3 days
The month with the highest number of rainy days is August (27.8 days).
The month with the least rainy days is February (17 days).
Average snowfall in September
Cloonacool, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (43mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Cloonacool, Ireland
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.8 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
Cloonacool, 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: 5h and 0min
The month with the most sunshine is June (Average sunshine: 6h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Cloonacool, Ireland
- Average sunshine days in September: 4.5 days
The month with the most sunshine days is December (8.5 days).
The month with the least sunshine days is August (1.1 days).
Average UV index in September
Cloonacool, 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, November and December (UV index 2).
Average cloud cover in September
Cloonacool, Ireland
- Average cloud cover in September: 66
The months with the most cloud cover are July and August (Cloud cover 71).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in September
Cloonacool, Ireland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April and December (9km).
The month with the lowest visibility is July (7km).
