Blarney Weather in December

Blarney in December sees low temperatures, with highs around 10°C (50°F) and overnight lows of 5°C (41°F). Rainfall is fairly high at around 96 mm (3.8 in) on average, so pack waterproofs just in case.

Rainfall in Blarney in December

Historically, approximately 20 days this month are expected to have rain, averaging 96 mm (3.8 in). Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in Blarney in December

December in Blarney brings low temperatures, with highs of 10°C (50°F) and nights around 5°C (41°F). December marks the winter season. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Blarney in December

This month is characterized by fewer sunny days, with about 56 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

Wind Speed in Blarney in December

Wind speeds average 6 m/s (12 knots) during December. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.

Average water temperature in December

The water temperature is only 10°C (50°F) this month — cold enough that most people will want to stay out. Hardy swimmers may manage a quick dip, but it won't be comfortable.

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

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 Ireland, check out our Blarney's climate page.

Blarney Temperature in December

Min Temperature 5°C (41°F)  

Max Temperature 10°C (50°F)  

Water Temperature 10°C (50°F) *  

Chance of Rain 68%  

Precipitation 96 mm (3.8 in)  

Rainy days 20 days  

Humidity 85% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 56 hours *  

Percentage Sunshine 20% *  

* Data from: Cork, Ireland (10 KM, 6 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Blarney typically stay consistent throughout December, with daily highs averaging around 10°C (50°F). Nights are cold, with lows around 4°C (39°F).

Average temperatures in December

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in December

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Blarney in December

Browse day-by-day weather records for Blarney spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Blarney historical weather extremes in December

Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Blarney.

• The warmest day in December was on December 21, 1991, with a maximum of 16°C (61°F).
• Blarney experienced its chilliest December day on December 22, 2010, reaching only -3°C (27°F).
• The coldest night in December in Blarney was on December 21, 2010, with a minimum of -7°C (19°F).

What to Wear in Blarney in December

The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. 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. With limited sunshine expected, sunglasses aren't a priority for packing.

What To Do in Blarney in December

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

Swimming

4/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

6/10

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 Ireland, check out our Blarney's climate page.

More climate data for Blarney

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Blarney climate overview or explore weather in Ireland.