Offshore Stays

Surf Byron Bay in August

Surfing Byron Bay in August: in the main surf season, air around 18°C, sea around 21°C, 1.7 mm of rain a day on average. Wetsuit: a 2mm shorty or springsuit.

Surf season

In season

Air temperature

18°C

Sea temperature

21°C

Rain

1.7 mm/day

Wind

22 km/h avg

Average wave height

1.5 m (5 ft)

Big days (top 10%)

2.2 m (7 ft)+

Swell period

9 s

Main swell direction

From SSE (158°)

What to wear: with the sea around 21°C in August, expect a 2mm shorty or springsuit.

Surf size in Byron Bay in August

Offshore of Byron Bay, waves in August average 1.5 m (5 ft), below the year-round average of 1.6 m — the 10th biggest month of the year. One hour in ten is 2.2 m (7 ft) or bigger. The dominant swell runs at about 9 seconds from the SSE.

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.

August in the context of Byron Bay's surf season

Byron Bay's main surf season runs March–September. August is inside it.

Full Byron Bay surf and remote-work guide →

Frequently asked questions

Is August a good month to surf Byron Bay?
Yes — August falls in Byron Bay's main surf season (March–September).
How warm is the sea in Byron Bay in August?
About 21°C on average, which calls for a 2mm shorty or springsuit.
What is the weather like in Byron Bay in August?
Air temperature averages 18°C, with about 1.7 mm of rain per day and average winds of 22 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 29.0°S 153.5°E), retrieved 22 Oct 2026.