September weather forecastCastledermot, Ireland
September
Weather in September
September, the first month of the autumn in Castledermot, is still a refreshing month, with an average temperature varying between 15.5°C (59.9°F) and 8.4°C (47.1°F).Temperature
Castledermot, Ireland, starts September with an average high-temperature of a still refreshing 15.5°C (59.9°F), hinting at a minimal fluctuation from August. During September, Castledermot's temperature averages to a chilly 8.4°C (47.1°F) at night.Humidity
In Castledermot, the average relative humidity in September is 90%.Rainfall
In Castledermot, Ireland, during September, the rain falls for 11.3 days and regularly aggregates up to 17mm (0.67") of precipitation. Throughout the year, there are 167.6 rainfall days, and 283mm (11.14") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Castledermot.Daylight
The average length of the day in September in Castledermot is 12h and 40min.On the first day of the month, sunrise is at 6:38 am and sunset at 8:15 pm. On the last day of September, in Castledermot, Ireland, sunrise is at 7:28 am and sunset at 7:06 pm IST.
Sunshine
In September, the average sunshine is 5.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Castledermot, Ireland
- Average high temperature in September: 15.5°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°C).
- Average low temperature in September: 8.4°C
The month with the highest average low temperature is July (10.6°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).
Average pressure in September
Castledermot, Ireland
- Average pressure in September: 1015.7mbar
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
Castledermot, Ireland
- Average wind speed in September: 13.9km/h
The windiest month (with the highest average wind speed) is February (19km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in September
Castledermot, Ireland
- Average humidity in September: 90%
The months with the highest relative humidity are November and December (92%).
The month with the lowest relative humidity is April (86%).
Average rainfall in September
Castledermot, Ireland
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is November (41mm).
The driest month (with the least rainfall) is March (16mm).
Average rainfall days in September
Castledermot, Ireland
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is September (11.3 days).
Average snowfall in September
Castledermot, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is November (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Castledermot, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 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
Castledermot, 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 54min
The month with the most sunshine is May (Average sunshine: 6h and 24min).
The months with the least sunshine are February, November and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Castledermot, Ireland
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is November (13.9 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Castledermot, Ireland
- Average UV index in September: 3
The months with the highest UV index are June and August (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
Castledermot, Ireland
- Average cloud cover in September: 62
The month with the most cloud cover is July (Cloud cover 68).
The month with the least cloud cover is April (Cloud cover 58).
Average visibility in September
Castledermot, Ireland
- Average visibility in September: 7km
The months with the highest visibility are February, March and December (9km).
The months with the lowest visibility are July, August and September (7km).
