Offshore Stays

Surf Siargao in May

Surfing Siargao in May: outside the main surf season, air around 28°C, sea around 30°C, 5.6 mm of rain a day on average. Wetsuit: boardshorts or a rash vest.

Surf season

Off-season

Air temperature

28°C

Sea temperature

30°C

Rain

5.6 mm/day

Wind

14 km/h avg

Average wave height

0.8 m (3 ft)

Big days (top 10%)

1.1 m (4 ft)+

Swell period

9 s

Main swell direction

From ENE (68°)

What to wear: with the sea around 30°C in May, expect boardshorts or a rash vest.

Surf size in Siargao in May

Offshore of Siargao, waves in May average 0.8 m (3 ft), below the year-round average of 1.1 m — the 8th biggest month of the year. One hour in ten is 1.1 m (4 ft) or bigger. The dominant swell runs at about 9 seconds from the ENE.

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 Siargao's surf season

Siargao's main surf season runs August–November. May is outside it.

Full Siargao surf and remote-work guide →

Frequently asked questions

Is May a good month to surf Siargao?
May is outside Siargao's main surf season (August–November), so surf is less reliable, though it can still work on the right day.
How warm is the sea in Siargao in May?
About 30°C on average, which calls for boardshorts or a rash vest.
What is the weather like in Siargao in May?
Air temperature averages 28°C, with about 5.6 mm of rain per day and average winds of 14 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 10.0°N 126.0°E), retrieved 22 Oct 2026.