Mawgan Porth Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s break down what’s happening at Mawgan Porth.

We’re staring down a rough start. Thursday (3rd September) is a total loss with howling cross-onshore winds and junk surf. Friday (4th September) isn’t much better – the swell’s around, but it’s onshore and lumpy, not worth getting wet for. We’re looking at a couple of real poor days.

The first real window opens on Saturday morning (5th September). The wind goes glassy – flat calm – and we’ve got a clean 5ft groundswell from the WNW with an 11-second period. That’s a proper setup for a river-mouth break like this. The longer period gives the waves some shape and push, though it can make things a bit straight at the beach. The water is a touch warmer than normal for the time of year, running about 64°F. This is your best shot in the first week, no contest. The afternoon turns a bit cross-onshore, so get out there early.

The rest of the first week and into the next is a mess of onshore winds and chop. Sunday (6th September) is tiny and weak. Monday (7th) and Tuesday (8th) pump in some serious size – 8ft to 8ft with combined energy (1480 and 1106) – but it’s all blown out with strong cross-onshore or onshore winds. That’s expert-only size, and the wind is going to trash it. For a river break, that’s more of a kite-surfing session than a clean paddle.

We hit a gap of several days after that with no real recommendations. The surf goes small and poor.

Then, circling back to Tuesday (15th September) morning and afternoon – we get another interesting one. A clean offshore wind (NNE) and a very long-period groundswell (15-16 seconds) from the WNW. That’s some serious energy (1035 in the afternoon). This is a long-range standout, so take it with a pinch of salt, but the potential is there. The long period will favour a river-mouth break, giving it good shape, but at 5ft that’s still a solid, punchy wave. The Wednesday (16th) after that still has some cleanish swell, but the wind turns onshore, so it’s not as good.

The final days of the outlook fade into tiny, weak surf with nothing to get excited about.

So, bottom line: for the cleanest, most fun waves, get yourself down there Saturday morning (5th September). That’s the real standout. For a more powerful, long-period option with clean wind, keep an eye on Tuesday (15th September) – but it’s a long way out, so don’t get your hopes up too high just yet.

Rusty.

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