Mary River Mouth

River Mouth·Northern Territory·Australia

Field notes

Wide tidal mouth of the Mary River entering Chambers Bay; long-running charter ground for big run-off barra and threadfin salmon. Mud banks at the entrance hold blue salmon on the drop tide.

Current conditions

Wind
8.4 kt ESE
Gusts 17.9 kt
Waves
m
Period —
Swell
m
Period —
Sea temp
25.5°C
Air 26.1°C
Next 12 hours
10:00
8.4 ESE
11:00
8.4 ESE
12:00
7.1 SE
13:00
5.7 SE
14:00
5.5 SSE
15:00
5.9 SSE
16:00
4.9 S
17:00
2.9 SSW
18:00
0.9 NW
19:00
3.2 NNW
20:00
3.9 WNW
21:00
3.2 WNW
Tides
Nearest BOM tide station: Chambers Bay ↗ (16.5 km · secondary)
We don't predict tides on-site — BOM's published tables are authoritative.
BOM · Van Diemen GulfIssued at 2:30 pm CST on Tuesday 21 July 2026
Situation. A weakening ridge of high pressure directs an east to southeasterly flow over coastal waters. Winds will ease slightly before strengthening again towards the end of the week as a new ridge builds over central Australia.
Tuesday 21 July until midnight. Winds: Northeast to southeasterly 10 to 15 knots tending southeast to southwesterly in the late afternoon. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Clear.
Wednesday 22 July. Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots offshore during the morning. Winds becoming variable about 10 knots in the late afternoon. Seas: Around 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.
Thursday 23 July. Winds: South to southeasterly about 10 knots tending east to southeasterly 10 to 15 knots before dawn then becoming variable about 10 knots in the late afternoon. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Sunny.
Friday 24 July. Winds: East to southeasterly 15 to 20 knots tending south to southeasterly during the day. Seas: Around 1 metre, increasing to 1 to 1.5 metres south of Channel Point during the morning. Swell: East to northeasterly below 1 metre. Weather: Mostly 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↑ 07:05↓ 18:34
Moon↑ 11:58↓ 00:47
PhaseFirst quarter 49%
Best windows
  • Dawn06:42 – 08:05
  • Dusk17:34 – 18:57
Tomorrow
Sun↑ 07:05↓ 18:35
Moon↑ 12:37↓ 01:38
PhaseFirst quarter 59%
Best windows
  • Dawn06:42 – 08:05
  • Dusk17:35 – 18:57
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

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Access & logistics

Spot type
River Mouth
Region
Northern Territory, Australia
Fishing style
estuary fishing and land-based fishing
Structure
Typically holds drop-offs, holes and gutters — 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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