September weather forecastClonmacnoise, Ireland
September
Weather in September
The first month of the autumn, September, is also a moderate month in Clonmacnoise, Ireland, with temperature in the range of an average low of 8.5°C (47.3°F) and an average high of 15.5°C (59.9°F).Temperature
An average high-temperature of a moderate 15.5°C (59.9°F) marks September, exhibiting a close resemblance to the conditions in August. An average low-temperature of 8.5°C (47.3°F) is observed during September nights.Humidity
In Clonmacnoise, Ireland, the average relative humidity in September is 90%.Rainfall
September is the month with the least rainfall in Clonmacnoise. Rain falls for 17.1 days and accumulates 34mm (1.34") of precipitation.Snowfall
April through October are months without snowfall in Clonmacnoise.Daylight
The average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 6:42 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:10 pm IST.
Sunshine
In September, the average sunshine in Clonmacnoise is 5.3h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 3 in September translates into these instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clonmacnoise, Ireland
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is July (17.7°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (10.5°C).
The coldest month (with the lowest average low temperature) is February (1.9°C).
Average pressure in September
Clonmacnoise, 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
Clonmacnoise, Ireland
- Average wind speed in September: 14.2km/h
The windiest month (with the highest average wind speed) is February (18.8km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in September
Clonmacnoise, Ireland
- Average humidity in September: 90%
The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are March, April and May (86%).
Average rainfall in September
Clonmacnoise, Ireland
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is November (67mm).
The driest month (with the least rainfall) is September (34mm).
Average rainfall days in September
Clonmacnoise, Ireland
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is February (15.5 days).
Average snowfall in September
Clonmacnoise, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (21mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Clonmacnoise, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 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
Clonmacnoise, Ireland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 5h and 18min
The month with the most sunshine is June (Average sunshine: 6h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Clonmacnoise, Ireland
- Average sunshine days in September: 9.4 days
The month with the most sunshine days is November (11.6 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in September
Clonmacnoise, 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
Clonmacnoise, Ireland
- Average cloud cover in September: 65
The month with the most cloud cover is July (Cloud cover 71).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in September
Clonmacnoise, Ireland
- Average visibility in September: 8km
The months with the highest visibility are February, March and December (9km).
The month with the lowest visibility is July (7km).
