Offshore Stays

Surf Azores (São Miguel) in September

Surfing Azores (São Miguel) in September: in the main surf season, air around 22°C, sea around 23°C, 1.9 mm of rain a day on average. Wetsuit: a 2mm shorty or springsuit.

Surf season

In season

Air temperature

22°C

Sea temperature

23°C

Rain

1.9 mm/day

Wind

20 km/h avg

Average wave height

1.7 m (6 ft)

Big days (top 10%)

2.4 m (8 ft)+

Swell period

11 s

Main swell direction

From NNW (338°)

What to wear: with the sea around 23°C in September, expect a 2mm shorty or springsuit.

Surf size in Azores (São Miguel) in September

Offshore of Azores (São Miguel), waves in September average 1.7 m (6 ft), below the year-round average of 2.1 m — the 9th biggest month of the year. One hour in ten is 2.4 m (8 ft) or bigger. The dominant swell runs at about 11 seconds from the NNW.

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.

September in the context of Azores (São Miguel)'s surf season

Azores (São Miguel)'s main surf season runs September–February. September is inside it.

Full Azores (São Miguel) surf and remote-work guide →

Frequently asked questions

Is September a good month to surf Azores (São Miguel)?
Yes — September falls in Azores (São Miguel)'s main surf season (September–February).
How warm is the sea in Azores (São Miguel) in September?
About 23°C on average, which calls for a 2mm shorty or springsuit.
What is the weather like in Azores (São Miguel) in September?
Air temperature averages 22°C, with about 1.9 mm of rain per day and average winds of 20 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 38.0°N 25.5°W), retrieved 22 Oct 2026.