Randalstown Weather in December

In Randalstown, December brings low daytime temperatures around 9°C (48°F), with nights cooling to 3°C (37°F). Expect quite a bit of rainfall this month.

Rainfall in Randalstown in December

You can typically expect 21 days of rain this month, averaging around 83 mm (3.3 in). This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.

Temperature in Randalstown in December

December in Randalstown brings low temperatures, with highs of 9°C (48°F) and nights around 3°C (37°F). December is in the winter season. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. Nights fall to 3°C (37°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Randalstown in December

This month is characterized by fewer sunny days, with about 39 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

Wind Speed in Randalstown in December

December has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in December

The water sits at 10°C (50°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Randalstown. Our weather planner can help you explore destinations with more pleasant weather conditions.