September weather forecastBallybrittas, Ireland
September
Weather in September
The first month of the autumn, September, is also a moderate month in Ballybrittas, Ireland, with an average temperature varying between 15.5°C (59.9°F) and 8.2°C (46.8°F).Temperature
August's transformation into September witnesses an average high-temperature of a still refreshing 15.5°C (59.9°F), noting a minor change from the preceding month. In the month of September, the nighttime temperature dips to a steady average of 8.2°C (46.8°F).Humidity
In Ballybrittas, the average relative humidity in September is 90%.Rainfall
The month with the least rainfall in Ballybrittas is September, when the rain falls for 10.5 days and typically collects 15mm (0.59") of precipitation.Snowfall
May through October are months without snowfall in Ballybrittas, Ireland.Daylight
In September, the average length of the day in Ballybrittas is 12h and 40min.On the first day of September, sunrise is at 6:39 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:07 pm IST.
Sunshine
The average sunshine in September is 5.3h.UV index
The average daily maximum UV index in September in Ballybrittas is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 3 turns into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ballybrittas, Ireland
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is July (17.7°C).
The months with the lowest average high temperature are January and December (6.9°C).
- Average low temperature in September: 8.2°C
The month with the highest average low temperature is July (10.3°C).
The coldest month (with the lowest average low temperature) is February (1.5°C).
Average pressure in September
Ballybrittas, Ireland
- Average pressure in September: 1015.4mbar
The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).
Average wind speed in September
Ballybrittas, Ireland
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is February (18.9km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in September
Ballybrittas, 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
Ballybrittas, Ireland
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (34mm).
The driest month (with the least rainfall) is September (15mm).
Average rainfall days in September
Ballybrittas, Ireland
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in September
Ballybrittas, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is November (19mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Ballybrittas, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.6 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
Ballybrittas, 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 April (Average sunshine: 5h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Ballybrittas, Ireland
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Ballybrittas, 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
Ballybrittas, Ireland
- Average cloud cover in September: 66
The month with the most cloud cover is July (Cloud cover 72).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in September
Ballybrittas, Ireland
- Average visibility in September: 7km
The months with the highest visibility are February and March (9km).
The months with the lowest visibility are July, August and September (7km).
