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Tides

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

Monday 13 July 2026 · Australia/Perth

Tide now — water rising, 11 h 37 m to next high (3:53 pm)

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

Today Time Height (m)
Low 1:00 am -0.26
High 3:53 pm 0.64

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

Sun
↑ 7:19 am · ↓ 5:26 pm
Moon
↑ 6:16 am · ↓ 3:55 pm
Moon phase
New · 3%
Sea temp
16.9°C
Swell (max)
1.1 m @ 11 s SW
Best bite
10:30 pm–12:00 am

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
Mon 13 Jul Today 1.1 m 11 s SW
Tue 14 Jul 1.0 m 11 s SW
Wed 15 Jul 0.9 m 11 s W
Thu 16 Jul 1.3 m 6 s W
Fri 17 Jul 1.3 m 8 s W
Sat 18 Jul 2.4 m 9 s W
Sun 19 Jul 2.6 m 9 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)

Day 1st High 1st Low Range (m) Open
Mon 13 Jul Today 3:53 pm (0.64 m) 1:00 am (-0.26 m) 0.9
Tue 14 Jul 4:53 pm (0.63 m) 1:56 am (-0.34 m) 0.97
Wed 15 Jul 5:53 pm (0.75 m) 2:47 am (-0.3 m) 1.05
Thu 16 Jul 6:04 pm (0.79 m) 3:37 am (-0.06 m) 0.85
Fri 17 Jul 8:30 am (0.37 m) 4:06 am (0.1 m) 0.69
Sat 18 Jul 8:06 am (0.41 m) 5:04 am (0.28 m) 0.21
Sun 19 Jul 5:30 am (0.17 m) 3:00 am (0.14 m) 0.23
Mon 20 Jul 6:30 am (0.19 m) 3:00 am (0.1 m) 0.16
Tue 21 Jul 7:30 am (0.21 m) 1:00 pm (0.18 m) 0.13
Wed 22 Jul 8:30 am (0.2 m) 12:54 am (-0.11 m) 0.35
Thu 23 Jul — — —
Fri 24 Jul — — —
Sat 25 Jul — — —
Sun 26 Jul — — —

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 0.9 m (moon 3% 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 0.7 m. The biggest swing this week falls on Wednesday (~1.05 m).

Across the next fortnight, the biggest spring tides at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) peak around Wednesday 15 Jul at about 1.05 m (around the new moon), and the smallest neap tides fall around Tuesday 21 Jul at about 0.13 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 tide at Bunbury Koombana Bay (Inner Harbour / The Plug / Casuarina Boat Harbour) is at 3:53 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 1:00 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 0.9 m (moon 3% 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 10:30 pm–12:00 am.

Nearby tide spots