Please select your home edition
Edition
GAC Pindar Superyacht Services

Lunar and tidal influences

by Gary Brown on 18 Sep 2013
The fish were right at Alan’s feet Gary Brown
The effect that the moon, sun and tides has on fishing is incredible. In this brief article, I will explain how to use the lunar and Tidal influences to your advantage.


Lunar Cycle

The lunar cycle has nine phases in it (ref to diagram 1), and all of these phases have an effect on the tides which in turn play an important part in the day to day life of the angler and the fish species that they are targeting. You have the New moon, Full moon, First quarter, Last Quarter, Waning and Waxing Crescent and the Waning and Waxing Gibbous.


Ocean Currents

Australia’s fish species are influenced by currents, wind drifts and eddies. If you take a look at the map of Australia (ref to Diagram 2) that has the schematic view of ocean currents that are found around Australia you may start to realize why there can be an overlapping of fish species that are found in Australia. Australia is affected by the South Equatorial current that is found in the top northwest part of Australia, which in turn joins up with the Leeuwin current that is found off the west coast of WA and part of South Australia. From there the coast of Australia is influenced by the Flinders current and the West Wind Drift. While the east coast of Victoria, NSW and Queensland has the East Coast eddies and the East Australian Current.

Effects on the Tides

Tides are periodic short-term changes in the height of the surface at a particular place caused by a combination of the gravitational force of the moon, sun and the motion of the earth.

The ocean responds simultaneously to inertia and to the gravitational forces of both the sun and the moon. If earth, moon and sun are all in a line, the lunar and solar tides (spring tides) will go to their extreme. This will result in higher high tides and lower low tides. But if the earth, moon and sun form a right angle (neap tides), the solar tide will tend to diminish the lunar tide.

Now if you have ever looked at a tide chart and wondered why there is a slight difference between the tides on one day to the next. It is because the lunar day (24 hours 53 minutes) is longer than the 24 hour clock that we base our day on. Therefore the highest tide will arrive 53 minutes later each day.


Tidal Patterns

You will find that in most populated parts of Australia there will be a tide change approximately every 53 minutes. How great the difference between the low and high water will depend on where you are fishing in Australia and at what stage the 28 day lunar cycle is at.

The rise and fall in the sea level as a tide crest approaches and pauses will cause a tidal current of water to flow into and out of bays and harbours. This water rushing into an enclosed area, due to a rise in the sea level is called a flood tide and water rushing out because of the fall in the sea level is called the ebb current.

For example, you could be fishing the Parramatta River in Sydney for yellowfin bream at the beginning of the month when the moon is in the first quarter and you have a high tide of 1.5 metres. Then come back and fish the same place when there is a new moon in the same lunar cycle, and find that you have a high tide of 1.9 metres. What this does for the yellowfin bream at this spot in the Parramatta River is that it allows them to forage further up the bank to areas that they normally won’t be able to get to, which then enables the angler more areas to target the yellowfin bream.


As an angler you need to take note of these different tidal conditions, because these changes in the tidal current (flow) will governed whether you will need to change or adjust your rigs to suit the conditions.

To help you out I will give you three examples of what I mean:

Example 1 Estuary:


If you were fishing for luderick near the top of the tide on the run-out and the current/flow of the water was not fast you would be able to let your float go along with the current/flow. But what you would find as the tide started to get half way down the tidal current/flow would have increase to a point where you would have to slow your float down by holding it back.

Example 2 Beach:

Sand whiting and mullet are usually one of the first fish to start to forage up in the shallower areas of the beach. This will start to happen when the water starts to flood over sand spits, bars and right at your feet at the water’s edge. This rise in the tide will indicate to the pipis, crabs, beach and tube worms that it is also time for them to start and look for a feed. You will also find that the movement of the waves will dislodge some of these creatures ready for the whiting to pounce on. The sand whiting will also tend to be one of the last to leave these areas as well, making them easy prey for the larger fish species that will patrol the deep parts of the beach looking for a feed.


Dusky flathead will be one of those larger fish species that will be waiting just off the edge where it drops into a gutter, channel or a hole. This will usually occur during the last part of the falling tide as the whiting are leaving the shallow areas. Dusky flathead will also go up onto the sand flats and bars and bury themselves and lay in wait for the unsuspecting fish that are foraging at high tide.


Example 3 Rocks:

I have been fishing off the rocks just before the top of the tide and have seen drummer and luderick come up with a wave and lay on their side to feed off the green weed and cabbage that is usually out of reach. There has been no more than 10cm of water. This would be a good time to use an unweighted piece of green weed or cabbage.

Pantaenius - Worldwide SupportGAC Pindar Sailing NewsBarz Optics - Melanin Lenses

Related Articles

Cyclone Debbie forces evacuations in Australia
Residents in northern Australia begun evacuating as cyclone carrying winds up to 230km/h moves towards Queensland coast Residents in northern Australia have begun evacuating as a cyclone carrying winds up to 230km/h (143 mph) moves towards the Queensland coast. Cyclone Debbie is tipped to become a Category 4 system - the second most severe - when it arrives early on Tuesday local time, authorities said. Some people have refused to leave despite warnings the destructive core could be as wide as 100km (62 miles).
Posted today at 7:13 am
Tropical Cyclone Debbie to impact the Queensland Coast on Tuesday
Tropical Cyclone Debbie has reached Category 2 strength and is forecast to further intensify to Category 4 strength Tropical Cyclone Debbie has reached Category 2 strength and is forecast to further intensify to Category 4 strength, crossing the Queensland coast on Tuesday between Rollingstone and Proserpine. Queensland Regional Director Bruce Gunn said this cyclone is very dangerous, and of a size not seen in Queensland since Yasi in 2011.
Posted today at 3:07 am
Ayr, Airlie Beach and the Whitsundays to meet Cyclone Debbie
Having intensified to a Cat4 TC now, Debbie is expected to hit during the course of Monday night and into Tuesday mornin Having intensified to a Cat3 TC now and Cat4 when it will make landfall, Debbie is expected to hit during the course of Monday night and into Tuesday morning (0400hrs). Thus far, there have been police enforced evacuations around Ayr, as it is expected that this will be the biggest event since the all-powerful TC5 Yasi hit back in 2011. There are also reports of residents refusing to leave
Posted on 26 Mar
MotorGuide makes Tuross Head Flathead and Bream Tournament a success
Tuross Head Flathead and Bream Tournament has been an outstanding success with 255 competitors taking to the water At the end of the weekend catch-and-release fishing tournament, the experienced David Fraser took home the winner’s trophy with his two best flatheads (48 and 72.6 cm) and two best bream (32.3 and 27.5 cm) giving him a total of 248.1 points, and a comfortable 10-point gap on Stuart Walker in second place.
Posted on 24 Mar
HDS Carbon has landed
SolarMAX™ HD technology gives you an ultra-wide 180 degree viewing angle to make sure you can see your display clearly Built to match the needs of the modern angler, Lowrance HDS Carbon displays sport powerful new dual-core processors for smoother operation of demanding high-performance accessories like StructureScan® 3D.
Posted on 24 Mar
Aquasports Marine marks 10 Years with Mercury
Boat range is extensive, running from runabouts, offshore fishing, and bowriders to cuddy cabins and family all-rounders Situated in the Perth suburb of Midland, the team at Aquasports Marine not only supply and service the full range of Mercury and MerCruiser engines, they provide boat lovers with everything they could need – including new and used boats, full boat and motor servicing and repairs, finance, insurance, fishing gear, watersport equipment, boat chandlery, oils and motor spare parts.
Posted on 23 Mar
Lowrance® celebrates 60 years of domination
Lowrance®, a world-leader in fishing electronics since 1957 — announced plans for celebration of its 60th Anniversary. Lowrance®, a world-leader in fishing electronics since 1957 — announced today plans for the celebration of its 60th Anniversary. For six decades, the iconic brand has led the industry in product innovation and customer service, supported professional anglers around the globe and dominated the tournament trail.
Posted on 23 Mar
New Garmin GPSMAP models now available
Garmin’s popular GPSMAP multifunction display series, new 752xs/952xs touchscreen are now available in Australia. Further expanding Garmin’s popular GPSMAP multifunction display series, the new 752xs/952xs touchscreen and 1022xsv/1222xsv rotary control/keyed units are now available in Australia.
Posted on 23 Mar
Coral Bleaching Again - Call to Action
Last week I attended latest Reef 2050 Long Term Sustainability Plan meeting of the Reef Advisory Committee in Brisbane It has become abundantly obvious to CAREFISH that climate change has eventuated and massive scale disruption and or destruction of our environment, particularly the Great Barrier Reef (GBR), is currently being experienced and is escalating. Whilst it is acknowledged that Governments are attending to some aspects and attempting to mitigate effect...
Posted on 22 Mar
New Listing – 2013MY Pursuit C 260
With a huge bathroom, great seating and the huge deck, this boat has it all.The price includes a virtually new Sea Pen. This late model US built boat makes for the perfect fishing and offshore vessel or is just as at home cruising enclosed waters with the family. With a huge bathroom, great seating and the huge aft deck this boat really has it all.The price includes a virtually new Sea Pen.
Posted on 22 Mar