A game fish leaping offshore

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Offshore from Umkomaas

Deep-sea fishing,
the moon and the tides.

Charter boats launch through the surf at Umkomaas, 23 km south of Cabana Mio, onto some of the warmest, fishiest water on the South African coast. Here is what you can catch, and what the moon really has to do with it.

23 kmto Umkomaas launch
21–26°Csea temperature
~14.8 daysbetween spring tides
Dawnthe usual launch

What's out there

Off this coast the warm Agulhas Current brings game fish close inshore. Recent KZN fishing reports name couta (king mackerel), dorado, yellowfin tuna, wahoo and sailfish offshore, with snoek around Toti and Umkomaas, and reef fish on the bottom. What bites depends on the season and the water: winter often brings wahoo and big yellowfin, while summer's warm blue water brings dorado and sailfish.

Most trips are trolling (lures or bait pulled behind the boat) or bottom fishing over reef. Charters supply the tackle; bring a hat, sunscreen and a seasickness tablet.

Does the moon affect fishing?

Partly, and mostly through the tides. The moon and sun together drive the tides. Around new moon and full moon they line up, giving spring tides: the biggest rise and fall, and the strongest tidal currents. Around the quarter moons the pull is weaker, giving neap tides with less water movement.

Moving water moves bait, and many fish feed when bait is moving, so many skippers and shore anglers favour the days around a new or full moon, often the turn of the tide. The effect is strongest inshore and on the reefs; far offshore, current, water temperature, wind and bait shoals usually matter more.

Solunar tables, which predict feeding windows from moonrise and moonset, date from John Alden Knight in 1926. They are popular, but controlled studies have not shown a consistent link, so treat them as folklore with a grain of truth rather than science.

Before you go

  • Book with a licensed skipper; launches depend on the surf and are often cancelled in strong wind or big swell
  • Expect an early start: boats usually launch at first light
  • A recreational fishing permit is required in South Africa (charters can advise)
  • Respect bag limits and closed seasons; many skippers tag and release billfish
  • Ask the office to arrange it when you book: tick 'Deep-sea fishing'

Moon phases & spring tides, the next 12 months

Spring tides (the biggest tides and strongest currents) run for a day or two either side of each new and full moon. Times are South African time. For exact tide times, use the SA Navy Hydrographic Office tide tables for Durban.

MoonDateTimeSpring tides around
Full moonMon, 26 Oct 202606:11Sun, 25 Oct – Wed, 28 Oct
New moonMon, 09 Nov 202609:02Sun, 08 Nov – Wed, 11 Nov
Full moonTue, 24 Nov 202616:53Mon, 23 Nov – Thu, 26 Nov
New moonWed, 09 Dec 202602:52Tue, 08 Dec – Fri, 11 Dec
Full moonThu, 24 Dec 202603:28Wed, 23 Dec – Sat, 26 Dec
New moonThu, 07 Jan 202722:24Wed, 06 Jan – Sat, 09 Jan
Full moonFri, 22 Jan 202714:17Thu, 21 Jan – Sun, 24 Jan
New moonSat, 06 Feb 202717:56Fri, 05 Feb – Mon, 08 Feb
Full moonSun, 21 Feb 202701:23Sat, 20 Feb – Tue, 23 Feb
New moonMon, 08 Mar 202711:30Sun, 07 Mar – Wed, 10 Mar
Full moonMon, 22 Mar 202712:43Sun, 21 Mar – Wed, 24 Mar
New moonWed, 07 Apr 202701:51Tue, 06 Apr – Fri, 09 Apr
Full moonWed, 21 Apr 202700:27Tue, 20 Apr – Fri, 23 Apr
New moonThu, 06 May 202712:58Wed, 05 May – Sat, 08 May
Full moonThu, 20 May 202712:59Wed, 19 May – Sat, 22 May
New moonFri, 04 Jun 202721:40Thu, 03 Jun – Sun, 06 Jun
Full moonSat, 19 Jun 202702:44Fri, 18 Jun – Mon, 21 Jun
New moonSun, 04 Jul 202705:02Sat, 03 Jul – Tue, 06 Jul
Full moonSun, 18 Jul 202717:45Sat, 17 Jul – Tue, 20 Jul
New moonMon, 02 Aug 202712:05Sun, 01 Aug – Wed, 04 Aug
Full moonTue, 17 Aug 202709:29Mon, 16 Aug – Thu, 19 Aug
New moonTue, 31 Aug 202719:41Mon, 30 Aug – Thu, 02 Sept
Full moonThu, 16 Sept 202701:03Wed, 15 Sept – Sat, 18 Sept
New moonThu, 30 Sept 202704:36Wed, 29 Sept – Sat, 02 Oct
Full moonFri, 15 Oct 202715:47Thu, 14 Oct – Sun, 17 Oct

Calculated with the standard astronomical method (Meeus), accurate to a few minutes. Neap tides fall about a week after each phase, around the quarter moons.

Questions

Is fishing better at full moon?

Full and new moons bring spring tides and stronger currents, which often help inshore and reef fishing. Offshore, water temperature, current and bait matter more. Solunar tables have not been proven by controlled studies.

Where do the boats launch?

Umkomaas is the nearest launch, 23 km (about 20 minutes) south of Cabana Mio. Boats also launch from Durban and further down the South Coast.

Do I need a permit?

Yes: a recreational fishing permit is required in South Africa. Your charter can advise.

Sources: Island Fisherman: how the moon affects fishing · Windy.app: solunar theory, science or fiction · East Coast Radio: KZN deep sea fishing update · Moon phases: calculated (Meeus, Astronomical Algorithms). Facts checked October 2026; confirm dates with the organisers.