Offshore Stays

Surf Aljezur in December

Surfing Aljezur in December: outside the main surf season, air around 12°C, sea around 17°C, 2.1 mm of rain a day on average. Wetsuit: a 4/3mm full wetsuit.

Surf season

Off-season

Air temperature

12°C

Sea temperature

17°C

Rain

2.1 mm/day

Wind

18 km/h avg

Average wave height

2.4 m (8 ft)

Big days (top 10%)

3.7 m (12 ft)+

Swell period

13 s

Main swell direction

From NW (315°)

What to wear: with the sea around 17°C in December, expect a 4/3mm full wetsuit.

Surf size in Aljezur in December

Offshore of Aljezur, waves in December average 2.4 m (8 ft), above the year-round average of 1.9 m — the 3rd biggest month of the year. One hour in ten is 3.7 m (12 ft) or bigger. The dominant swell runs at about 13 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.

December in the context of Aljezur's surf season

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

Full Aljezur surf and remote-work guide →

Frequently asked questions

Is December a good month to surf Aljezur?
December is outside Aljezur's main surf season (April–June, September–November), so surf is less reliable, though it can still work on the right day.
How warm is the sea in Aljezur in December?
About 17°C on average, which calls for a 4/3mm full wetsuit.
What is the weather like in Aljezur in December?
Air temperature averages 12°C, with about 2.1 mm of rain per day and average winds of 18 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.