September weather forecastCelbridge, Ireland
September
Weather in September
September marks the official onset of autumn in Celbridge, thus, bringing a sharp contrast in weather conditions. Falling average temperatures, from 15.6°C (60.1°F) down to 9°C (48.2°F), usher in the start of the colder half of the year. While rainfall subsides a bit in September, those seeking the autumn sunshine will still encounter frequent showers, which along with the dropping temperatures bring the feel of a true Irish autumn. The fall in daylight hours, despite a marginal rise in sunshine hours, signifies the receding summer. The sublime changes brought by the onset of autumn, present a unique opportunity for witnessing Ireland's nature and landscapes under a diverse array of conditions.Temperature
Celbridge registers an average high-temperature of a still refreshing 15.6°C (60.1°F) at the commencement of September, closely related to the preceding month. An average low-temperature of 9°C (48.2°F) is recorded during the nights in September in Celbridge.Humidity
The average relative humidity in September is 89%.Rainfall
In Celbridge, in September, it is raining for 12.7 days, with typically 20mm (0.79") of accumulated precipitation. In Celbridge, during the entire year, the rain falls for 170.7 days and collects up to 271mm (10.67") of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 6:36 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:04 pm IST.
Sunshine
In Celbridge, the average sunshine in September is 5.8h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Celbridge, Ireland
- Average high temperature in September: 15.6°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 (6.9°C).
- Average low temperature in September: 9°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).
Average pressure in September
Celbridge, Ireland
- Average pressure in September: 1015.2mbar
The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1008.2mbar).
Average wind speed in September
Celbridge, Ireland
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is January (20.3km/h).
The calmest months (with the lowest average wind speed) are June and July (13.3km/h).
Average humidity in September
Celbridge, Ireland
- Average humidity in September: 89%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are March and April (85%).
Average rainfall in September
Celbridge, Ireland
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is August (33mm).
The driest months (with the least rainfall) are January, April and October (16mm).
Average rainfall days in September
Celbridge, Ireland
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in September
Celbridge, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (15mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Celbridge, 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, October and November (0 days).
Average daylight in September /
Average sunshine in September
Celbridge, 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 48min
The month with the most sunshine is April (Average sunshine: 6h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Celbridge, Ireland
- Average sunshine days in September: 10.7 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in September
Celbridge, 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, March, November and December (UV index 2).
Average cloud cover in September
Celbridge, Ireland
- Average cloud cover in September: 60
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
Celbridge, Ireland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).
