Viana do Castelo Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s take a long, hard look at what’s coming up for the next couple of weeks at Viana do Castelo. We’ve got a classic river-mouth setup here, exposed to the west, so it’s all about picking the right windows when the wind plays ball and the swell isn't just raw power.

First things first, the water’s sitting at 62.4°, which is a noticeable 3.4° cooler than average for this time of year. You’ll want a good 4/3, maybe even booties if you’re feeling the cold.

Right off the bat, Sunday the 13th isn’t your day. We’ve got a 4.6ft NW swell, but the cross-shore wind and marginal conditions mean it’s a hard pass. You’re better off waiting.

Monday the 14th is where it starts to get interesting. The morning is a real gem – glassy conditions with a light southerly breeze, and a clean 2.6ft NW swell rolling in. The energy is moderate at 229, but with that glassy surface, it’s going to be fun, user-friendly waves. This is the pick of the first few days for a relaxed session. The afternoon turns cross-on and drops off, so get it while it’s good.

Tuesday the 15th is a write-off. The morning has tiny, weak 1.6ft surf (energy 116), and the afternoon gets hammered by a fresh 22 mph NNW breeze. That’s kite-surfing weather, not paddle-surfing.

Wednesday the 16th sees the swell jump up. Morning is a powerful 6.6ft NNW swell, but the period is a short, weak 8 seconds, and with 19 mph winds, it’s going to be a messy, blown-out mess. The afternoon is bigger at 7.5ft and even windier. That’s too much juice for this spot, and the forecast agrees – this is expert-only territory at best.

Now we’re talking. Thursday the 17th morning is a standout. We’ve got a clean 6.2ft NW swell with a moderate 10-second period, and here’s the kicker – a 9 mph NNE offshore wind. That’s going to groom the waves beautifully. The energy is solid at 678. This is the best session of the first week, no question. Get out there. The afternoon, however, gets blown out again by that fresh NNW wind and the swell pushes over 6.9ft – too big and messy.

Friday the 18th morning is salvageable with a clean 5.6ft NW swell and light winds, but the afternoon is another no-go. That 7.5ft NW swell with a 15-second period has a massive 2827 energy reading, but the 16 mph cross-off wind and the sheer size make it a beast for experts only. That long period will make it wall up at a river mouth, so it might be a bit straight.

Saturday the 19th morning is glassy, with a 6.9ft NW groundswell (13-second period, 1425 energy). It sounds incredible, but the forecast is clear: it’s too big for this break. A real shame. The afternoon cleans up a bit but the energy is still high.

Sunday the 20th morning is another absolute beauty. Glassy conditions, a clean 4.9ft NW swell with a 10-second period, and moderate energy at 512. This is a proper, clean, fun-size wave. The afternoon turns cross-off but remains clean.

And then we hit the sweet spot. Monday the 21st is the absolute highlight of the whole outlook. Morning is glassy, 6.6ft NW groundswell with a 13-second period and a whopping 1387 energy reading. The forecast calls it excellent for experienced surfers. This is a serious, powerful, well-shaped wave with no wind. The afternoon is just as good – 5.9ft, 14-second period, 1215 energy, and clean. If you can only pick one day, this is it. Just be warned, it’s a step up in size and power.

Tuesday the 22nd morning is another glassy, very good session with a 4.9ft NW swell. After that, things taper off fast. The rest of the week and into the next sees tiny, weak swell and poor conditions. There’s a long gap of ordinary to poor surf from the afternoon of the 22nd all the way through to the morning of the 28th. That’s nearly six days of nothing special.

Finally, on Monday the 28th, we get a small bump of hope. Morning sees a clean 3.6ft WNW swell with a 9-second period and light cross-off winds. It’s not big, but it’s clean and surfable after a long flat spell. The afternoon gets hammered by 25 mph rain and onshore wind, so don’t bother.

So, to sum it up: Monday the 21st is your absolute standout – two sessions of excellent, powerful, glassy groundswell for experienced surfers. Thursday the 17th morning is your best bet for the first week with that offshore wind and solid 6.2ft swell. And if you want a more relaxed, fun-sized wave, Monday the 14th morning and Sunday the 20th morning are your glassy, clean options. The rest is either too small, too windy, or too

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