Killarney weather
Our guide to the weather in Killarney during December
We've looked at the most up-to-date weather data for Killarney, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Killarney weather in December.
What's the temperature like in Killarney during December?
The temperature reaches around 8℃ during the daytime in December, falling away to 3℃ at night. The UV index will be low at this time of year, so not something to worry about. However, if you're going to be outside for long periods it's always a good idea to apply a small amount of sunscreen to exposed skin.
Does it snow in Killarney during December?
Possibly. There's a chance of snow during December but not as much as you might think. Check the local forecast before you leave home so that you can pack appropriate footwear and clothing.
Does it rain in Killarney during December?
December is typically the wettest month in Killarney. On average, there will be 11 rainy days during the month, amounting to 149.2mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Killarney during December?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during December. With cool air temperatures, any breeze will feel cold.
Weather in Killarney
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December