Is May a good month to surf Cascais?

May is outside Cascais's main surf season (March–April, September–November), so surf is less reliable, though it can still work on the right day.

How warm is the sea in Cascais in May?

About 16°C on average, which calls for a 4/3mm full wetsuit.

What is the weather like in Cascais in May?

Air temperature averages 17°C, with about 1.0 mm of rain per day and average winds of 20 km/h.

Surf Cascais in May

Surfing Cascais in May: outside the main surf season, air around 17°C, sea around 16°C, 1.0 mm of rain a day on average. Wetsuit: a 4/3mm full wetsuit.

Surf season

Off-season

Air temperature

17°C

Sea temperature

16°C

Rain

1.0 mm/day

Wind

20 km/h avg

Average wave height

1.6 m (5 ft)

Big days (top 10%)

2.3 m (7 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 Cascais in May

Offshore of Cascais, 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 (7 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 Cascais's surf season

Cascais's main surf season runs March–April, September–November. May is outside it.

Full Cascais surf and remote-work guide →

Frequently asked questions

Is May a good month to surf Cascais?: May is outside Cascais's main surf season (March–April, September–November), so surf is less reliable, though it can still work on the right day.
How warm is the sea in Cascais in May?: About 16°C on average, which calls for a 4/3mm full wetsuit.
What is the weather like in Cascais in May?: Air temperature averages 17°C, with about 1.0 mm of rain per day and average winds of 20 km/h.