Cape Byron Deep
Canyon·New South Wales·Australia·
Field notes
The shelf drops fast east of Cape Byron, with the continental edge in close - Australia's mainland easternmost point. Black marlin run heavy from September, Spanish mackerel and wahoo push down on the warm current. Note Cape Byron Marine Park sanctuary zones inshore.
Current conditions
Wind
5.6 kt SSE
Gusts 18.3 kt
Waves
2.3 m
Period 9.1 s
Swell
2.2 m
Period 7.5 s
Sea temp
20.7°C
Air 19.1°C
Next 12 hours
10:00
5.6 SSE
2.3m
11:00
7.3 SE
2.3m
12:00
8.7 SE
2.2m
13:00
8.8 SE
2.2m
14:00
9.2 SE
2.2m
15:00
8.7 SE
2.1m
16:00
7.2 SE
2.1m
17:00
5.5 SSE
2.1m
18:00
4.6 SSE
2.1m
19:00
3.5 SSE
2m
20:00
2.1 SSE
2m
21:00
1.4 SSE
2m
Tides
Nearest BOM tide station: Brunswick Heads ↗ (17.7 km · secondary)
We don't predict tides on-site — BOM's published tables are authoritative.
BOM · Byron CoastIssued at 4:05 pm EST on Tuesday 21 July 2026
Situation. Northerly winds are becoming west to northwesterly as a ridge extending from a high over the Tasman Sea recedes ahead of a cold front approaching the state from the southwest. The cold front will then cross the coastal waters on Thursday into early Friday, with a fresh to strong southwesterly wind change in its wake.
Tuesday 21 July until midnight. Winds: Southeasterly 10 to 15 knots. Seas: Around 1 metre. 1st Swell: Easterly 2 metres. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy.
Wednesday 22 July. Winds: Easterly 10 to 15 knots becoming variable about 10 knots before dawn. Seas: Below 1 metre. 1st Swell: Easterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy.
Thursday 23 July. Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Easterly 1 to 1.5 metres, decreasing to around 1 metre around midday. Weather: Mostly sunny.
Friday 24 July. Winds: Southerly 15 to 25 knots. Seas: Below 1 metre, increasing to 1 to 2 metres during the morning. 1st Swell: Southerly around 1 metre, increasing to 1 to 1.5 metres during the afternoon or evening. 2nd Swell: Easterly around 1 metre. Weather: Partly cloudy. 60% chance of showers.
Source: Open-Meteo Marine + ECMWF (15-min cache) · BOM (1-hr cache). Not for navigation.
Sun & moon
Today
Sun↑ 06:35↓ 17:09
Moon↑ 10:42↓ 00:09
PhaseFirst quarter 49%
Best windows
- Dawn06:10 – 07:35
- Dusk16:09 – 17:34
Tomorrow
Sun↑ 06:35↓ 17:10
Moon↑ 11:13↓ 01:06
PhaseFirst quarter 59%
Best windows
- Dawn06:10 – 07:35
- Dusk16:10 – 17:35
Best windows combine civil twilight with the hour either side of sun transit — the universal low-light feeding window most species respond to. Moon phase influence is folkloric; full and new moons coincide with the strongest tide swings.
What's biting
Recent reports from the community. Sign in to log your own catches.
Access & logistics
Spot type
Canyon
Region
New South Wales, Australia
Fishing style
offshore and bluewater fishing
Structure
Typically holds drop-offs — work the structure for holding fish.
Licence
Recreational fishing licence may apply — check the New South Wales fisheries regulator before fishing.
Closures
Always confirm current marine park / closure status and seasonal bag limits.
Saved.
Comments
Sign in to leave a comment.
No comments yet — be the first.