December
Weather in December
Sea temperature
In Rosslare, Ireland, the average seawater temperature in December is 11.5°C (52.7°F).Note: Danger awaits those who swim in 11.5°C (52.7°F) without protection. Falling below 10°C (50°F) means intense cold shock and hyperventilation.
Daylight
December has the shortest days of the year in Rosslare, Ireland, with an average of 7h and 48min of daylight.On the first day of the month, sunrise is at 8:13 am and sunset at 4:16 pm. On the last day of December, sunrise is at 8:34 am and sunset at 4:22 pm GMT.
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
What is the water temperature in December in Rosslare?
In December, the average sea temperature in Rosslare is 11.5°C (52.7°F). Swimming in 11.5°C (52.7°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.
What is the month with the shortest days in Rosslare?
The month with the shortest days is December, with an average of 7h and 48min of daylight.
What is the average length of the day in December in Rosslare?
In Rosslare, Ireland, the average day length in December is 7h and 48min.
When is the sunrise / sunset in December in Rosslare?
In December, on the first day of the month, sunrise is at 8:13 am and sunset at 4:16 pm. On the last day of the month, in Rosslare, sunrise is at 8:34 am and sunset at 4:22 pm GMT.
Average sea temperature in December
Rosslare, Ireland
- Average sea temperature in December: 11.5°C
The best month for swimming (with the highest average sea temperature) is August (15.4°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).
Average daylight in December
Rosslare, Ireland
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
