Roundstone Weather in December
Roundstone in December sees low temperatures, with highs around 10°C (50°F) and overnight lows of 6°C (43°F). Rainfall is fairly high at around 173 mm (6.8 in) on average, so pack waterproofs just in case.
Rainfall in Roundstone in December
Historically, the month has about 24 days of rain, averaging 173 mm (6.8 in) in total. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Roundstone in December
December in Roundstone sees highs of 10°C (50°F) and lows of 6°C (43°F) overnight. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. At 6°C (43°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Roundstone in December
The area experiences limited sunny days, amounting to roughly 35 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Roundstone. Our weather planner can help you explore destinations with more pleasant weather conditions.
Roundstone Temperature in December
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Roundstone Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Roundstone - and find the best time to visit.
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Roundstone 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
Daily Historical Precipitation
47-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Roundstone in December
Browse day-by-day weather records for Roundstone spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Roundstone historical weather extremes in December
Our historical data for Roundstone spans 1999 to 2025, revealing these weather extremes.
- The hottest December day on record in Roundstone reached 15°C (59°F) (December 9, 2025).
- Roundstone experienced its chilliest December day on December 30, 2000, reaching only -4°C (25°F).
- The wettest December day on record brought 34 mm (1.3 in) of precipitation to Roundstone (December 3, 2006).
Best Places in Ireland in December
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Roundstone 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. It's going to pour! Pack a good poncho and prepare for very wet conditions. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.
What To Do in Roundstone in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Cycling5/10 -
Walking5/10 -
Camping3/10 -
Outdoor sports5/10
Roundstone 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Roundstone climate overview or explore weather in Ireland.
Popular in December
Where to go in December - average daytime high across popular destinations.
Doolin
11°C (52°F) Cork11°C (52°F) Westport9°C (48°F) Kilkenny
9°C (48°F) Kenmare10°C (50°F) Killarney10°C (50°F) Galway10°C (50°F) Dublin10°C (50°F) 
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