Mundaka weather in December
December in Mundaka: cool, soaked, with clean air — not the time — 16 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#12 of 12 months in Mundaka · #1289 of 1413 destinations to visit in December · comfort 41/100 (tier F)
- Days
- 14°C
- Nights
- 9°C
- Wet days
- 16
- Sun
- 5.2 h
- Humidity
- 80%
- Daylight
- 9 h
Traveller notes on Mundaka in December
Other months in Mundaka
Mundaka-forum reviews describe October as the real start of the Basque coast's main surf season: the legendary left-hand rivermouth wave begins waking up as autumn swells arrive, water still holds late-summer warmth even as air temperatures cool, and the point stays workable across a wide four-to-eight-foot range with fewer crowds than the peak November-December months. Weather-wise, visitor accounts are candid that this quaint fishing town's charm doesn't always come with good weather - one reviewer flatly says the weather was poor during their stay, rain included, while still calling the visit worthwhile for the views and the town itself. The general pattern regulars describe is a genuinely wet autumn, showers arriving without much warning even between swell-watching sessions. The record: 21C days, 13.8C nights, a notably high 134mm across 14 days, a 20.4C sea, 74 percent humidity and just 7.5 hours of sun - a wet, cloudy month that matches the mixed-weather reviews closely.
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Mundaka climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Mundaka 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 holidays in Spain, school holidays in 6 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Mundaka'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 weatherMundaka's weather peaks July–September.
Best weatherFair weatherToughest weather
What's on in Mundaka in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Mundaka left season
1 Oct – 28 Feb · usuallySurf seasonThe rivermouth sandbar needs a big northwest swell and the right tide, which only comes together in autumn and winter. Good spells rarely last more than a couple of days, so surfers watch forecasts and come on short notice. Source ↗
Nearby, and something's on
Within 300 km of Mundaka — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Mundaka?
Mundaka in December — FAQ
- Is December a good time to visit Mundaka?
- December in Mundaka: cool, soaked, with clean air — not the time — 16 rainy days. It ranks #12 of 12 months for Mundaka on SeasonMap's comfort score (41/100).
- What is the weather like in Mundaka in December?
- In December, Mundaka averages a daily high of 14.1°C and a low of 8.5°C, with about 209.7 mm of rain over roughly 16.4 rainy days.
- What is the air quality in Mundaka in December?
- Mundaka has a mean US Air Quality Index of about 36 in December.
Within 300 km: Bilbao's Santo Tomas fair on 21 Dec, and San Sebastián's Autumn and winter swell around 15 Sep – 31 Mar.