Donning their swimwear, the courageous group were seen jumping around in the chilly water with some retaining their woolly hats for the adventurous gathering.
The Weather Network is predicting a longer, colder, winter this year and today will definitely turn more winter-like this afternoon with snow and blowing snow, driven by northerly winds gusting to 50 km/h.
Sunrise on the shortest days of the year begins at 8.56am and the light shines into the Newgrange chamber for 17 minutes.
Although some people think that the whole day is the solstice, there is actually a specific time in the day when the solstice occurs.
When is the winter solstice? That means our lunar neighbor should be plenty bright enough all weekend to light up your solstice celebrations. On the other hand, the winter solstice also marks the longest day of in the Southern Hemisphere.
What is the winter solstice?
In December, the Earth's North Pole turns away from the Sun, giving the Southern Hemisphere the most sunlight. It's what many consider the first day of winter.
The English Heritage celebrates the winter solstice at Stonehenge on the meteorologically accurate date which will this year fall on December 22.
Friday night is also the peak of the Ursid meteor shower, but a near-full moon and cloud cover will make for poor meteor-viewing conditions.
The two events don't perfectly line up at the same time, though.
This is when when the sun appears to be at its southernmost point in the sky; as such, the Southern Hemisphere has its longest day of the year, and the Northern Hemisphere has its shortest day of the year, on the December solstice, according to EarthSky.