What is the best moon phase for mulloway in WA?

New moon is the classic window — three nights either side, fished into the slack at the top of a pushing tide. Darkness gives mulloway, which hunt by their lateral line, the upper hand over bait in the shallows. Full moon still produces in deeper water where bait silhouettes against the surface, so it's a change of location rather than a write-off.

Is new moon or full moon better for mulloway?

New moon is the higher-percentage bet in shallow water and surf gutters because mulloway hunt in near-total darkness. Full moon shifts the fish onto deeper drop-offs and structure where the extra light helps them pick off silhouetted bait. Pick your spot to suit the phase rather than abandoning the session.

Does the moon matter for mulloway in Perth?

Less than the east coast forums claim. Perth's tide range is tiny — often a 40–50cm swing — so the moon's physical influence is small. Cloud cover, wind-driven water levels, barometric pressure and low light around dawn and dusk often matter more than the lunar phase itself.

What tide is best for mulloway?

Moving water past structure, with the bites concentrated around the slack-to-run change at either end of the tide. Spring tides near the new and full moon push the most bait through pinch points. Dead, still water rarely produces.

Where can you catch mulloway around Perth?

On a dark new moon the Narrows Bridge pylons, Point Walter drop-off and the deep holes off Ashfield Flats fish well in the Swan, while metro beaches like Floreat, Scarborough and Mullaloo turn on when the water's black and the tide is pushing. On full moon switch to deeper marks such as North Mole and the reef edges at Trigg.

The Best Moon Phase for Mulloway in WA

Every mulloway angler in the country has an opinion on the moon. New moon devotees reckon anything else is a waste of bait. Full moon believers swear by the silhouette game. The truth sits in the middle — and in WA it sits a long way off what the east coast forums will tell you.

Here’s what moon phase actually does to mulloway, how it interacts with tide, and the Perth caveats that blow the textbook advice apart.

The Theory: Why Mulloway Care About the Moon

Mulloway aren’t sight-hunters in the way a tailor or a trevally is. Their lateral line does most of the work, picking up vibration and displacement well beyond what their eyes can resolve. That single fact is why moon phase matters at all.

On a new moon, when ambient light is near zero, mulloway have the home-ground advantage. Bait can’t see them coming, they don’t need to see the bait, and they hunt with confidence in the shallows. That’s why “three days either side of new moon” has been the classic jewie window forever.

Full moon flips it. The water’s lit up, bait spots predators at range, and mulloway in skinny water get twitchy. But on deeper drop-offs, full-moon light helps them — bait silhouettes against the surface from below, and a big jewie in eight metres picks targets off like a sniper. The phase doesn’t stop them feeding. It changes where.

New Moon: The Classic Jewie Window

If you had to pick one window for a serious WA jewie trip, this is it. Three nights either side of new moon, pushing tide into the slack at the top, is as close to a guarantee as fishing gets — which is to say, no guarantee at all, but better odds than most.

The Narrows Bridge pylons come into their own on a dark new-moon run, fish ambushing bait against the concrete without worrying about silhouettes overhead. Point Walter fishes well too — the drop-off at the end of the sandbar holds fish moving along the edge. The deep holes out from Ashfield Flats sit quiet and black on a new moon and reward anglers willing to sit out there for six hours with a thermos and no WiFi.

On the beaches, new moon at Floreat Beach or Scarborough Beach is a proper session, especially lined up with a pushing tide through the first couple of hours of dark. Fish that wouldn’t come inside the second bank on a bright night cruise the wash when the water’s black.

Full Moon: Not a Write-Off, Just a Different Game

The forum orthodoxy that full moon “kills” jewie fishing is lazy. It changes the game, and in some spots improves it. Fish where the phase works for you, not against.

Deeper water is your friend on full moon. The groyne at North Mole has genuine depth close in, and fish sit at the drop-off picking off silhouetted bait. Trigg Beach has the reef and depth to fish well on a bright night, as long as you work the edges rather than open sand. The deeper Narrows pylons keep producing — the shadow line against the concrete is a full-moon gold zone.

What doesn’t work is ankle-deep gutters on a clean, open beach. Cast there all night and the fish will ghost you. Timing shifts too — on a bright night the bite often lands earlier or later towards dawn, fish using the edges of the night rather than the brightest hours.

Tide and Moon: The Interplay That Matters

You can’t separate phase from tide. Around new and full moons you get spring tides — the biggest movement of the cycle — and around the quarters you get neaps with minimal shift. Spring tides push more bait through a pinch point and crank the conveyor belt that feeds mulloway.

The actual trigger is the change. Dead water catches bugger-all. Moving water past structure gets bait organised and predators interested, but the slack-to-run transition at either end is where the real bites come. Line up a spring change with a new moon and last light and you’ve built a session.

Check actual water movement on the tides page and how moon, sun and tide stack up for your night on the BiteCompass solunar view. The majors-and-minors model was built for places with proper tidal range, so treat it as one input rather than gospel.

The Perth Caveat: Why Our Moon Matters Less

Now for the bit interstate gurus leave out. Perth’s tide range makes east coast anglers laugh — a mixed day swings 40 or 50 centimetres, sometimes less. The moon’s influence here is physically a much smaller event than in Sydney.

Light conditions often outweigh phase. A cloudy full-moon night fishes like a new moon. A clear quarter moon can fish like a full because the water’s still brighter than the fish like. Dusk and dawn bridges — the first hour of dark, the last hour before light — produce fish almost regardless of where the moon sits. If your session falls on a full moon but the satellite shows thick cloud rolling in from the sou-west, fish it anyway. The cloud is doing the phase’s job for you.

Wind moves more water than the moon does. A 20-knot sou-wester loads the coast regardless of what the tide chart predicted; a persistent easterly pulls it off. Read pressure and wind alongside moon and tide and you’ll pick sessions on nights the forum crowd has written off.

Putting It Together

The honest short answer: three nights either side of new moon, pushing tide into the first hour of dark, at a spot with genuine structure or depth — Narrows Bridge, Point Walter, or a proper gutter at Mullaloo Beach — is your best statistical shot at a WA jewie.

The longer answer is that the moon is one lever among several, and in Perth it’s a smaller lever than most believe. Cloud cover, wind-driven water levels, barometric pressure and tide change lined up with low light all matter at least as much. A clever angler who reads those out-fishes a doctrinaire new-moon purist nine times out of ten.

For more on the fish, the mulloway page has the rundown.

Before you load the car for a long cold night on the bank, check wind, tide, solunar and moon phase on BiteCompass. Pick the night where moon, tide, light and wind point the same direction and the river — or the beach — will do the rest.