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Tides

Tide times at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour)

Tuesday 13 October 2026 · Australia/Perth

Tide now — water rising, 3 h 36 m to next high (12:30 pm)

Today's high and low tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour)

Today Time Height (m)
Low 4:54 am -0.27
High 7:30 am -0.22
High 12:30 pm -0.09
High 8:15 pm 0.33

Sun, moon and bite times at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) today

Sun
↑ 5:39 am · ↓ 6:28 pm
Moon
↑ 6:42 am · ↓ 9:15 pm
Moon phase
New · 4%
Sea temp
17.8°C
Swell (max)
0.8 m @ 10 s W
Best bite
6:00 pm–10:00 pm

See full bite times for Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) →

Sea-level curve · today

Day timeline
Major Minor Tide Twilight
First light 5:14 am Last light 6:53 pm
Low 4:54 am High 7:30 am High 12:30 pm High 8:15 pm

Drag or use arrow keys to explore

Heights are scaled to today's range (datum is global mean sea level).

Swell · next 7 days at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour)

Day Max swell Period Direction
Tue 13 Oct Today 0.8 m 10 s W
Wed 14 Oct 0.6 m 10 s W
Thu 15 Oct 1.1 m 7 s W
Fri 16 Oct 1.4 m 8 s W
Sat 17 Oct 1.7 m 9 s W
Sun 18 Oct 1.9 m 10 s W
Mon 19 Oct 1.7 m 10 s W

Open-ocean swell at the nearest offshore model cell — expect less of it inside protected water.

Next 14 days at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour)

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About Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour)

Koombana Bay is Bunbury's sheltered side — the inner harbour, the breakwater locals call the Plug, the Marlston Hill foreshore, and the Casuarina Boat Harbour rock walls.

Tide character & fortnight outlook

Today's tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) sit in the spring band — peak-to-trough range about 0.6 m (moon 4% illuminated).

Across the next 7 days at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour), the average peak-to-trough tide range is about 0.41 m. The biggest swing this week falls on Wednesday (~0.7 m).

Across the next fortnight, the biggest spring tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) peak around Wednesday 14 Oct at about 0.7 m, and the smallest neap tides fall around Monday 19 Oct at about 0.01 m.

Best tide state to fish Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour)

North-facing and tucked behind the harbour breakwaters, so Koombana Bay shelters from the prevailing south-westerly weather that shuts down the open coast. Off-shore easterly holds the surface clean for the morning window; afternoon sea breezes blow across the bay but are softened by the bay shape. Tide changes lift the squid and KGW bite; slack water is slow. Water clarity holds clear most days — clouds up after heavy rain or a strong northerly that stirs the seagrass. The Collie River discharge gives the inner end of the bay a slightly tannin tinge after winter rains.

What anglers target here

Anglers fishing Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) typically time sessions around the tide for southern calamari (squid), king george whiting, yellowfin whiting (sand whiting), southern school whiting, and australian herring.

Tide questions, answered

What time is high tide at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) today?
Today's high tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) are at 7:30 am, 12:30 pm, and 8:15 pm.
What time is low tide at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) today?
Today's low tide at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) is at 4:54 am.
Is Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) on a spring or neap tide this week?
Today's tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) sit in the spring band — peak-to-trough range about 0.6 m (moon 4% illuminated).
When is the best tide to fish Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour)?
North-facing and tucked behind the harbour breakwaters, so Koombana Bay shelters from the prevailing south-westerly weather that shuts down the open coast. Off-shore easterly holds the surface clean for the morning window; afternoon sea breezes blow across the bay but are softened by the bay shape. Tide changes lift the squid and KGW bite; slack water is slow. Water clarity holds clear most days — clouds up after heavy rain or a strong northerly that stirs the seagrass. The Collie River discharge gives the inner end of the bay a slightly tannin tinge after winter rains. Today's peak bite window runs 6:00 pm–10:00 pm.

Nearby tide spots