Mundaka weather by month
The best time to visit Mundaka is July to September — 91/100 in July, 24°C and 11 rainy days. The best season is summer, June to August (87/100 on average).
The worst month is December at 41/100 — cool, soaked, clean air. See December →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Spain →
Best season: June to August (87/100 on average) · worst December (41/100)
- Days
- 24°C
- Nights
- 17°C
- Wet days
- 11
- Sun
- 12.3 h
- Humidity
- 76%
- Daylight
- 15 h

Mundaka, month by month
Comfort score out of 100 for the kind of trip Mundaka is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
What's on in Mundaka through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
Crowds in Mundaka in July
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.
Peak crowdsFiestas de San Pedro, Summer beach season, Summer holidays in Spain(estimated)
Peak crowdsBusyShoulder seasonQuiet
Traveller notes on Mundaka
What people who have been say about the place — the year-round notes first, then month by month.
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.
Add your own note from Mundaka's card on the map.