September
Weather in September
Sea temperature
In Bundoran, Ireland, the average seawater temperature in September is 14.4°C (57.9°F).Note: One needs to be cautious in 14.4°C (57.9°F) waters. 13°C (55.4°F) is already forbidding, but sub-10°C (14°F) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.
Daylight
In September, the average length of the day is 12h and 42min.On the first day of September, sunrise is at 6:41 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:11 pm IST.
Updated: Aug 16, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is the water in September?
In Bundoran, the average seawater temperature in September is 14.4°C (57.9°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
What is the average length of the day in September?
In Bundoran, the average day length in September is 12h and 42min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 6:41 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:11 pm IST.
Average sea temperature in September
Bundoran, Ireland
- Average sea temperature in September: 14.4°C
The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (9.2°C).
Average daylight in September
Bundoran, Ireland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).
