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Trepang Bay
Shoreline·Northern Territory·Australia·
Field notes
Large open bay on the northern Cobourg Peninsula between Vashon Head and Smith Point. Mix of sand, weed and scattered reef patches; targeted by Cobourg charters for golden snapper, black jewfish and reef species.
Current conditions
Wind
10.8 kt E
Gusts 25.9 kt
Waves
0.2 m
Period 2.8 s
Swell
0.2 m
Period 2.4 s
Sea temp
28.9°C
Air 30.7°C
Next 12 hours
13:00
10.8 E
0.2m
14:00
11.4 E
0.2m
15:00
11.6 E
0.2m
16:00
9.2 E
0.2m
17:00
8.2 E
0.2m
18:00
7.2 E
0.1m
19:00
6.1 E
0.1m
20:00
7.6 E
0.1m
21:00
7.8 E
0.1m
22:00
7.7 E
0.1m
23:00
7.5 E
0.1m
00:00
7.6 ESE
0.1m
Tides
Nearest BOM tide station: Smith Point - West ↗ (9.2 km · secondary)
We don't predict tides on-site — BOM's published tables are authoritative.
BOM · North Tiwi CoastIssued at 8:30 pm CST on Tuesday 19 May 2026
Situation. A ridge of high pressure strengthening over Central Australia is directing moderate to fresh southeasterly winds over coastal waters, persisting for most of the week.
Tuesday 19 May until midnight. Winds: Southeasterly 15 to 20 knots. Seas: Below 1 metre, increasing to 1 to 1.5 metres offshore south of Channel Point. Swell: Below 0.5 metres. Weather: Partly cloudy.
Wednesday 20 May. Winds: Southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres, decreasing to 1 metre by early evening. Swell: East to northeasterly below 1 metre. Weather: Partly cloudy.
Thursday 21 May. Winds: Southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon. Swell: East to northeasterly around 1 metre offshore. Weather: Sunny.
Friday 22 May. Winds: East to southeasterly 15 to 20 knots becoming variable about 10 knots during the day. Seas: Around 1 metre. Swell: Northeasterly below 1 metre. Weather: Sunny. North Tiwi Coast: Cape Fourcroy to Cape Don
Source: Open-Meteo Marine + ECMWF (15-min cache) · BOM (1-hr cache). Not for navigation.
Sun & moon
Today
Sun↑ 06:52↓ 18:27
Moon↑ —↓ 20:51
PhaseWaxing crescent 10%
Best windows
- Dawn06:29 – 07:52
- Dusk17:27 – 18:49
Tomorrow
Sun↑ 06:52↓ 18:26
Moon↑ 10:10↓ 21:56
PhaseWaxing crescent 18%
Best windows
- Dawn06:30 – 07:52
- Dusk17:26 – 18:49
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
Shoreline
Region
Northern Territory, Australia
Fishing style
land-based fishing and estuary fishing
Structure
Typically holds drop-offs and flats — work the structure for holding fish.
Licence
Recreational fishing licence may apply — check the Northern Territory fisheries regulator before fishing.
Closures
Always confirm current marine park / closure status and seasonal bag limits.
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