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
September
Weather in September
Temperature
With the arrival of September, Ballymun's average high-temperature registers at a mild 15.6°C (60.1°F), indicating a subtle variation from the previous month. In September, Ballymun experiences a marginal drop in temperature, with averages of 10.6°C (51.1°F) at night.Humidity
In Ballymun, the average relative humidity in September is 85%.Rainfall
In Ballymun, in September, during 10.9 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Ballymun, during the entire year, the rain falls for 159.4 days and collects up to 362mm (14.25") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 41min.On the first day of the month, sunrise is at 6:35 am and sunset at 8:14 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:03 pm IST.
Sunshine
In September, the average sunshine in Ballymun, Ireland, is 7h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Ballymun in September?
What is the average humidity in September in Ballymun?
How many days does it rain in September in Ballymun?
When it does not snow in Ballymun?
How many hours of daylight does Ballymun have in September?
What time are sunrise and sunset in September in Ballymun?
How long on average sun shines in September in Ballymun?
When is the highest UV index in Ballymun?
What is the UV index reading in September in Ballymun?
Average temperature in September
Ballymun, Ireland
- Average high temperature in September: 15.6°C
The warmest month (with the highest average high temperature) is July (17.4°C).
The month with the lowest average high temperature is January (7.6°C).
- Average low temperature in September: 10.6°C
The months with the highest average low temperature are July and August (12.1°C).
The coldest months (with the lowest average low temperature) are February and March (3.9°C).
Average pressure in September
Ballymun, Ireland
- Average pressure in September: 1015.2mbar
The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.2mbar).
Average wind speed in September
Ballymun, Ireland
- Average wind speed in September: 18.1km/h
The windiest month (with the highest average wind speed) is January (24.2km/h).
The calmest month (with the lowest average wind speed) is June (15.2km/h).
Average humidity in September
Ballymun, Ireland
- Average humidity in September: 85%
The months with the highest relative humidity are July and December (86%).
The months with the lowest relative humidity are March, April and May (83%).
Average rainfall in September
Ballymun, Ireland
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is November (51mm).
The driest month (with the least rainfall) is May (19mm).
Average rainfall days in September
Ballymun, Ireland
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.7 days).
Average snowfall in September
Ballymun, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Ballymun, 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
Ballymun, Ireland
- Average daylight in September: 12h and 4min
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: 7h and 0min
The months with the most sunshine are April, May and June (Average sunshine: 7h and 30min).
The months with the least sunshine are January, February and November (Average sunshine: 4h and 18min).
Average sunshine days in September
Ballymun, Ireland
- Average sunshine days in September: 16.4 days
The months with the most sunshine days are January and December (16.8 days).
The month with the least sunshine days is July (11 days).
Average UV index in September
Ballymun, Ireland
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Ballymun, Ireland
- Average cloud cover in September: 50
The months with the most cloud cover are January and February (Cloud cover 57).
The months with the least cloud cover are April and September (Cloud cover 50).
Average visibility in September
Ballymun, Ireland
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, October, November and December (10km).
The months with the lowest visibility are April, May, June, July, August and September (9km).
