Skip to main content
Tides

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

Friday 28 August 2026 · Australia/Perth

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

Today Time Height (m)
Low 2:10 am -0.1
High 9:13 am 0.27
Low 3:56 pm -0.22
High 10:21 pm 0.02

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

Sun
↑ 6:40 am · ↓ 5:57 pm
Moon
↑ 6:09 pm · ↓ 6:34 am
Moon phase
Full · 100%
Sea temp
16.4°C
Swell (max)
1.2 m @ 10 s W
Best bite
5:30 pm–7:00 pm

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

Sea-level curve · today

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
Fri 28 Aug Today 1.2 m 10 s W
Sat 29 Aug 0.8 m 12 s W
Sun 30 Aug 1.0 m 12 s W
Mon 31 Aug 1.0 m 8 s W
Tue 1 Sep 1.2 m 11 s W
Wed 2 Sep 1.2 m 10 s W
Thu 3 Sep 1.2 m 8 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)

Tap a day to open the full hourly forecast for Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour).

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 0.49 m (moon 100% 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 0.24 m. The biggest swing this week falls on Friday (~0.49 m).

Across the next fortnight, the biggest spring tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) peak around Saturday 5 Sep at about 0.65 m, and the smallest neap tides fall around Wednesday 2 Sep at about 0.04 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, western school whiting, yellowfin whiting (sand 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 9:13 am and 10:21 pm.
What time is low tide at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) today?
Today's low tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) are at 2:10 am and 3:56 pm.
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 0.49 m (moon 100% 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 5:30 pm–7:00 pm.

Nearby tide spots