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.

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• January
• February
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• May
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• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Randalstown's climate page.

Randalstown Temperature in December

Min Temperature 3°C (37°F)  

Max Temperature 9°C (48°F)  

Water Temperature 10°C (50°F) *  

Chance of Rain 71%  

Precipitation 83 mm (3.3 in)  

Rainy days 21 days  

Humidity 90% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 39 hours *  

Percentage Sunshine 15% *  

* Data from: Belfast, Ireland (12 KM, 8 Miles).

What to Wear in Randalstown in December

We recommend to layer up for chilly conditions in Randalstown in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 10°C (50°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Randalstown in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

4/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Randalstown's climate page.

More climate data for Randalstown

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Randalstown climate overview or explore weather in the United Kingdom.