Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In September, Castleisland's weather conditions record an average high-temperature of a still refreshing 15.6°C (60.1°F), demonstrating little divergence from the preceding month. Castleisland's average temperature during the nights of September is recorded at a fresh 10.7°C (51.3°F).Humidity
July through October, with an average relative humidity of 86%, are the most humid months.Rainfall
In Castleisland, in September, during 17.7 rainfall days, 46mm (1.81") of precipitation is typically accumulated. In Castleisland, during the entire year, the rain falls for 229.7 days and collects up to 704mm (27.72") of precipitation.Snowfall
In Castleisland, snow does not fall in April through October.Daylight
In September, the average length of the day in Castleisland, Ireland, is 12h and 39min.On the first day of September in Castleisland, sunrise is at 6:50 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:17 pm IST.
Sunshine
In Castleisland, Ireland, the average sunshine in September is 5.8h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What are September temperatures in Castleisland?
What is the most humid month in Castleisland?
What is the average humidity in September in Castleisland?
How much does it rain in Castleisland in September?
When it does not snow in Castleisland?
How many hours of daylight does Castleisland have in September?
What time are sunrise and sunset in September in Castleisland?
How many hours of sunshine does Castleisland have in September?
What is the UV index intensity in September in Castleisland?
Average temperature in September
Castleisland, Ireland
- Average high temperature in September: 15.6°C
The warmest month (with the highest average high temperature) is July (16.8°C).
The month with the lowest average high temperature is January (8.2°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is February (4.7°C).
Average pressure in September
Castleisland, Ireland
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is May (1016.1mbar).
The month with the lowest atmospheric pressure is November (1008.5mbar).
Average wind speed in September
Castleisland, Ireland
- Average wind speed in September: 17.8km/h
The windiest month (with the highest average wind speed) is December (23.8km/h).
The calmest month (with the lowest average wind speed) is July (15.5km/h).
Average humidity in September
Castleisland, Ireland
- Average humidity in September: 86%
The months with the highest relative humidity are July, August, September and October (86%).
The month with the lowest relative humidity is April (82%).
Average rainfall in September
Castleisland, Ireland
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is December (80mm).
The driest month (with the least rainfall) is May (42mm).
Average rainfall days in September
Castleisland, Ireland
- Average rainfall days in September: 17.7 days
The month with the highest number of rainy days is January (21.8 days).
The month with the least rainy days is April (16.5 days).
Average snowfall in September
Castleisland, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Castleisland, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 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
Castleisland, Ireland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 5h and 5min
The month with the most sunshine is June (Average sunshine: 7h and 42min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Castleisland, Ireland
- Average sunshine days in September: 9.6 days
The month with the most sunshine days is April (10.8 days).
The month with the least sunshine days is August (6.2 days).
Average UV index in September
Castleisland, Ireland
- Average UV index in September: 3
The months with the highest UV index are May, June and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Castleisland, Ireland
- Average cloud cover in September: 59
The month with the most cloud cover is July (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 53).
Average visibility in September
Castleisland, Ireland
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Castleisland, Ireland
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