Offshore Stays

Surf Mundaka in May

Surfing Mundaka in May: outside the main surf season, air around 15°C, sea around 16°C, 2.3 mm of rain a day on average. Wetsuit: a 4/3mm full wetsuit.

Surf season

Off-season

Air temperature

15°C

Sea temperature

16°C

Rain

2.3 mm/day

Wind

16 km/h avg

Average wave height

1.1 m (4 ft)

Big days (top 10%)

1.7 m (6 ft)+

Swell period

10 s

Main swell direction

From NW (315°)

What to wear: with the sea around 16°C in May, expect a 4/3mm full wetsuit.

Surf size in Mundaka in May

Offshore of Mundaka, waves in May average 1.1 m (4 ft), below the year-round average of 1.5 m — the 9th biggest month of the year. One hour in ten is 1.7 m (6 ft) or bigger. The dominant swell runs at about 10 seconds from the NW.

These are open-ocean figures from 10 years of hourly wave data, not a beach forecast: a sheltered break will be smaller, an exposed reef or point can be bigger.

May in the context of Mundaka's surf season

Mundaka's main surf season runs September–March. May is outside it.

Full Mundaka surf and remote-work guide →

Frequently asked questions

Is May a good month to surf Mundaka?
May is outside Mundaka's main surf season (September–March), so surf is less reliable, though it can still work on the right day.
How warm is the sea in Mundaka in May?
About 16°C on average, which calls for a 4/3mm full wetsuit.
What is the weather like in Mundaka in May?
Air temperature averages 15°C, with about 2.3 mm of rain per day and average winds of 16 km/h.
Climate: NASA POWER (MERRA-2) monthly climatology, 2001–2020. Sea temperature: NOAA Coral Reef Watch CoralTemp v3.1, 5 km monthly SST, 2015–2025 mean (nearest ocean cell). Surf season is Offshore Stays editorial. Waves: Open-Meteo Marine API, ECMWF ERA5-Ocean hourly reanalysis, 2016–2025 (offshore grid cell 43.5°N 2.5°W), retrieved 22 Oct 2026.