Killarney weather in December
Cool, with frequent heavy rain. Average highs of 10°C and lows of 5°C, with around 20 rainy days expected throughout the month.
While December isn't our top-rated month for Killarney, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
10°C
Average low
5°C
Rainy days
20 days
Best months to visit
Year-round
What to do in Killarney in December
Whatever the weather, Killarney rewards curious visitors. Here are some of the best ways to spend your time:
Take a jaunting car (horse cart) through national park
Hike the Torc Waterfall trail
Cycle or drive the Ring of Kerry loop
Explore Muckross House and estate
Kayak on Lough Leane
Visit nearby Gap of Dunloe's mountain pass
What to pack for December
Layer up — a mid-weight jacket, jumpers, and comfortable trousers. Waterproof shoes are recommended. Scarves and gloves may be useful in the evenings.
Browse other months
January
9C
Cold, with frequent heavy rain.
February
9C
Cold, with regular rainfall.
March
10C
Cool, with regular rainfall.
April
13C
Cool, with some rainy days.
May
15C
Cool, with regular rainfall.
June
18C
Mild and comfortable, with regular rainfall.
July
19C
Mild and comfortable, with regular rainfall.
August
18C
Mild and comfortable, with regular rainfall.
September
17C
Cool, with regular rainfall.
October
14C
Cool, with regular rainfall.
November
11C
Cool, with regular rainfall.
December (you are here)
10C
Cool, with frequent heavy rain.
Book your December trip to Killarney
Find hotels, tours and experiences for the perfect escape.
