Is September a good month to surf Byron Bay?

Yes — September falls in Byron Bay's main surf season (March–September).

How warm is the sea in Byron Bay in September?

About 21°C on average, which calls for a 2mm shorty or springsuit.

What is the weather like in Byron Bay in September?

Air temperature averages 20°C, with about 1.2 mm of rain per day and average winds of 23 km/h.

Surf Byron Bay in September

Surfing Byron Bay in September: in the main surf season, air around 20°C, sea around 21°C, 1.2 mm of rain a day on average. Wetsuit: a 2mm shorty or springsuit.

Surf season

In season

Air temperature

20°C

Sea temperature

21°C

Rain

1.2 mm/day

Wind

23 km/h avg

Average wave height

1.5 m (5 ft)

Big days (top 10%)

2.1 m (7 ft)+

Swell period

9 s

Main swell direction

From SSE (158°)

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

Surf size in Byron Bay in September

Offshore of Byron Bay, waves in September average 1.5 m (5 ft), below the year-round average of 1.6 m — the 9th biggest month of the year. One hour in ten is 2.1 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.

September in the context of Byron Bay's surf season

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

Full Byron Bay surf and remote-work guide →

Frequently asked questions

Is September a good month to surf Byron Bay?: Yes — September falls in Byron Bay's main surf season (March–September).
How warm is the sea in Byron Bay in September?: About 21°C on average, which calls for a 2mm shorty or springsuit.
What is the weather like in Byron Bay in September?: Air temperature averages 20°C, with about 1.2 mm of rain per day and average winds of 23 km/h.