Playa de Seaia Surf Forecast and Surf Report

Alright, let's get into it. The next couple of weeks are a bit of a rollercoaster for Playa de Seaia. We've got some clean windows, but plenty of days where the wind just won’t play ball. Let’s break it down.

The real standout here is the Thursday morning session on September 10th. That’s the one to circle. We’re looking at a moderate 5ft swell out of the NNW with a decent 10-second period. The combined energy is a solid moderate 452. What makes it special is the glassy conditions – dead calm, 5 km/h from the NNE, turning that morning into a smooth, clean lineup. For a spot that can get a bit ordinary, this is the gem. It’s a beginner-friendly break, so that size is perfect for learning or just cruising on a log. The water temp is sitting at 67°, which is 1° above the norm – nothing crazy, just a touch warmer than average for this time of year.

Before that, Tuesday September 8th is a write-off. Morning has a 4ft WNW swell with a 20 km/h SSW wind, giving us clean-ish lines but the conditions are just very ordinary. The afternoon sees the swell bump to 6ft, but the wind swings to a messy cross-onshore, making it choppy. Not worth paddling out.

Wednesday September 9th looks bleak too. The swell is picking up – 4ft in the morning and 5ft in the afternoon – but the wind is strong and onshore from the NE. There’s some serious energy in the water (466 and 798 respectively), but it’s all spoiled by the breeze.

After Thursday’s glory, Friday September 11th through to Sunday September 13th is a hard pass. Friday has a 4ft WNW swell, but the NE wind ruins it. Saturday and Sunday see even stronger onshore winds with swell up to 6ft. The combined energy hits 1103 on Sunday morning, but it’s a blown-out mess.

Monday September 14th has a bit of a drop – 3ft to 3ft – light winds, but it’s cross-onshore in the morning, leaving conditions poor. The afternoon is marginally better with a light onshore, but nothing to write home about.

Tuesday September 15th offers a tiny 2ft wave for the morning with a light SW offshore, making it clean but tiny. Surfable if you’re desperate, but not a session to plan around.

From Wednesday September 16th through to Friday September 18th, we get some serious swell size – up to 8ft – but the wind is relentless, strong, and onshore. These are kite-surfing conditions for sure, not for a paddle surfer looking for a clean wave. The energy is high (926 on the 16th afternoon, 929 on the 18th afternoon), but the quality is zero.

Now, Saturday September 19th – this is another standout. The morning session is glassy again with a 3ft WNW swell, 10-second period, and combined energy of 371. That light ESE breeze will have the surface butter-smooth. Perfect for a fun, small-wave session at this beginner-friendly break.

Sunday September 20th continues the trend with a clean morning – 4ft NW swell, 5 km/h offshore from the SW, and combined energy of 365. Another solid option for a relaxed surf.

Then things get interesting. Monday September 21st brings a massive 8ft NW swell in the afternoon with a very long 15-second period. The combined energy is an enormous 2854 – that is strong to very strong energy. However, the wind is a gentle cross-onshore, so the sets will be powerful and lined-up, but a bit bumpy. This is expert territory, and the long period means it’ll be best on the points or reefs, though at a beach break it might close out. Tuesday September 22nd still has plenty of swell (7ft) but the wind stays messy.

We round out the outlook with Wednesday September 23rd – a 4ft NW swell spoiled by a NNE onshore breeze. Nothing to get excited about.

So, to sum it up: Thursday September 10th morning is the top pick, and Saturday September 19th and Sunday September 20th mornings are also excellent. The rest is a mix of blown-out swell or small clean days. There are no big gaps with zero recommendations – just a lot of ordinary days to skip.

Rusty.

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