September weather forecastMalahide, Ireland
September
Weather in September
Malahide greets September with a gentle whisper of autumn. While the sea temperature lingers around a comfortable 14.8°C (58.6°F), the sun begins to set earlier. This phase acts as a cue for the town to prepare for the changing seasons. Although the weather remains pleasant, the air carries a tinge of cooler days ahead. September's weather offers a soothing breather after the lively summer.Sea temperature
In Malahide, Ireland, the average seawater temperature in September is 14.8°C (58.6°F).Note: In 14.8°C (58.6°F), even brief exposure to 13°C (55.4°F) feels biting, and anything less than 10°C (50°F) risks cold shock and impaired breathing, considering one's health.
Daylight
The average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 6:34 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:03 pm IST.
Updated: Jan 27, 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
In Malahide, Ireland, in September, the average water temperature is 14.8°C (58.6°F). Swimming in 14.8°C (58.6°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
The average day length in September is 12h and 41min.
On the first day of September in Malahide, Ireland, sunrise is at 6:34 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:03 pm IST.
Average sea temperature in September
Malahide, Ireland
- Average sea temperature in September: 14.8°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 (8.4°C).
Average daylight in September
Malahide, 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).





