Offshore Stays

Surf Aljezur in May

Surfing Aljezur in May: in the main surf season, air around 18°C, sea around 16°C, 1.0 mm of rain a day on average. Wetsuit: a 4/3mm full wetsuit.

Surf season

In season

Air temperature

18°C

Sea temperature

16°C

Rain

1.0 mm/day

Wind

17 km/h avg

Average wave height

1.6 m (5 ft)

Big days (top 10%)

2.3 m (8 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 Aljezur in May

Offshore of Aljezur, waves in May average 1.6 m (5 ft), below the year-round average of 1.9 m — the 8th biggest month of the year. One hour in ten is 2.3 m (8 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 Aljezur's surf season

Aljezur's main surf season runs April–June, September–November. May is inside it.

Full Aljezur surf and remote-work guide →

Frequently asked questions

Is May a good month to surf Aljezur?
Yes — May falls in Aljezur's main surf season (April–June, September–November).
How warm is the sea in Aljezur in May?
About 16°C on average, which calls for a 4/3mm full wetsuit.
What is the weather like in Aljezur in May?
Air temperature averages 18°C, with about 1.0 mm of rain per day and average winds of 17 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 37.5°N 9.0°W), retrieved 22 Oct 2026.