Cable Bay (Porth Trecastell) Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a proper look at what’s on the cards for Cable Bay (Porth Trecastell) over the next couple of weeks. I’ll be straight with you – it’s a pretty bleak run for a wave. We’ll be sitting this one out for the most part.

Right off the bat, the water is sitting at 63°, which is a touch warmer than normal for this time of year, so at least the paddle won't be a shock to the system. But don’t get your hopes up for any decent surf.

The whole first week, from Sunday the 26th of July right through to Saturday the 1st of August, is a total write-off. We’ve got a mix of onshore and cross-onshore winds, mostly from the west and southwest, blowing consistently at 12 to 22 mph. The swell is tiny, all under 3 ft, and what little energy there is has a weak combined swell energy reading (between 5 and 68). The period is short and choppy. It’s just poor surf conditions, day after day. Not worth getting the board wet.

There’s then a gap with a few days of tiny, low-energy dribble through the start of the second week. Tuesday the 4th of August brings rain showers and strong southwest winds, but the swell is barely 1 ft. Not a thing to ride.

The first flicker of something interesting arrives on Thursday the 6th of August in the afternoon. We see a spike in the swell, jumping to 7 ft from the SSW with a period of 6 seconds. The combined wave energy is moderate at 290. The wind is a light, gentle cross-shore breeze from the NW, which would keep things reasonably clean. Now, 7 ft is a solid size, but short period means it’ll be a bit crumbly and fat. It’s not a standout, but it’s the biggest wave in the entire forecast. Still, the model has it marked as poor surf conditions, so I wouldn’t call it a good day. This size is pushing it for beginners.

After that, Friday the 7th of August sees another pulse of southwest swell at 4 ft, but it’s hammered by strong cross-onshore winds, making for a messy, lumpy ocean. Not your friend.

The end of the run, from the 8th of August onward, is back to tiny, weak surf. While the wind turns clean and offshore at times, the swell is barely a ripple. The 8th of August morning has a clean, cross-offshore wind, but the wave is only 1.0 ft. The 10th of August is flat.

Honestly, for the next 16 days, there is not a single window that offers a proper surf. The most notable event is the afternoon of Thursday the 6th of August with that 7 ft cross-shore swell, but even then, the quality is poor and the period is short. If you’re desperate for a paddle, that’s your one and only look, but don’t expect any real waves. It’s a blank run, which for this area at this time of year isn’t totally out of the ordinary. Keep an eye on the charts; it tends not to stay this flat forever.

Rusty.

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