SeasonMapClifden (Connemara) weather in December
Ireland
December in Clifden: cold, soaked, with clean air — a gamble, with 20 rainy days.
#12 of 12 months in Clifden · #1044 of 1383 destinations to visit in December · comfort 54/100 (tier D)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Clifden in December
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Clifden climate normals — December
| Daytime high | 9°C / 48°F | 🧥 cold |
|---|---|---|
| Nighttime low | 6°C / 43°F | |
| Sea temperature | 10°C / 49°F | 🥶 cold sea |
| Rainfall | 156 mm / 6.2 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 5°C / 40°F | |
| Sunshine | 3.5 h/day | |
| Daylight | 7.6 h | |
| Wind | 34 km/h / 21 mph | |
| Snowfall | 0.6 cm / 0.2 in | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Clifden in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyChristmas break in Ireland, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Clifden's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherClifden's weather peaks May–July.
December coincides with Atlantic gale season.
Best weatherFair weatherToughest weather
What's on in Clifden in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Atlantic gale season
15 Oct – 15 Mar · usuallyStorm seasonNamed storms come in off the ocean with nothing between here and Newfoundland to slow them. Power goes out in the townlands, and the coast road at Streamstown takes spray across it. Source ↗
- Season
Winter shutdown
1 Nov – 15 Mar · usuallyOff-season shutdownClosuresMost of the guesthouses, the boat trips and a fair share of the restaurants close after October, leaving a handful of pubs and one hotel. The landscape is unchanged and there is nobody in it. Source ↗
Nearby, and something's on
Within 300 km of Clifden — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Clifden?
Clifden in December — FAQ
- Is December a good time to visit Clifden?
- December in Clifden: cold, soaked, with clean air — a gamble, with 20 rainy days. It ranks #12 of 12 months for Clifden on SeasonMap's comfort score (54/100).
- What is the weather like in Clifden in December?
- In December, Clifden averages a daily high of 8.8°C and a low of 6°C, with about 156.3 mm of rain over roughly 20.2 rainy days.
- What is the air quality in Clifden in December?
- Clifden has a mean US Air Quality Index of about 41 in December.
Other months in Clifden
Compare Clifden in December
Warmer or cooler than Clifden in December
Similar destinations in Northern Europe — December
Within 300 km: Dingle's Other Voices around 28 Nov – 10 Dec, and Killarney's Christmas in Killarney around 20 Nov – 31 Dec.