Crumlin Weather in December

During December, Crumlin experiences low daytime temperatures of 9°C (48°F) and cooler nights around 3°C (37°F). As part of the winter season, expect quite a bit of rainfall. Around 83 mm (3.3 in) is typical.

Rainfall in Crumlin in December

Historically, approximately 21 days this month are expected to have rain, averaging 83 mm (3.3 in). Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Crumlin in December

In December, Crumlin gets low temperatures, with highs of 9°C (48°F). Nights cool to around 3°C (37°F). The month of December belongs to the winter season. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. With lows around 3°C (37°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Crumlin in December

The area sees fewer sunny days, with a projection of about 39 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.

Wind Speed in Crumlin in December

Wind speeds average 5 m/s (10 knots) during December. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in December

At 10°C (50°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Crumlin. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Crumlin Temperature in December

Min Temperature 3°C (37°F)  

Max Temperature 9°C (48°F)  

Water Temperature 10°C (50°F) *  

Chance of Rain 69%  

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 (3 KM, 2 Miles).

What to Wear in Crumlin in December

Dress warmly and in layers for your trip to Crumlin in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 10°C (50°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Crumlin 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 Crumlin's climate page.

More climate data for Crumlin

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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