Viana do Castelo Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a look at what the next couple of weeks are shaping up like for Viana do Castelo. I’ll be straight with you – it’s a slow start, but there’s a flicker of hope further out.

The forecast opens with a real quiet spell. Friday the 7th through Sunday the 9th are a write-off, just tiny, weak, bumpy waves with poor conditions. You’re looking at swell heights of 1.0ft to 3ft, and the combined wave energy is barely a whisper, sitting between 24 and 137. The wind is all wrong for the river, coming from the south or west, making things choppy and messy. Not worth paddling out for.

Monday the 10th morning finally gives us a little something to work with. The wind swings around to a light NNW, turning cross-offshore, and the river cleans up. Swell is a weak 2ft from the NW with an 8-second period, and the combined energy is only 90. It’s small, but it’s clean. This is the first chance to get wet, but the conditions are still very ordinary.

Tuesday the 11th and Wednesday the 12th mornings are our next best bets. The wind goes glassy, which is a major positive. Swell stays small, around 2ft to 3ft, from the NW and W, with energy climbing to 170 by Wednesday morning. The waves are clean, but still small. The river mouth will be your best bet for a longboard or a foiler.

There’s a bit of a gap after Wednesday, with the afternoons and the following days looking rough again due to onshore winds and chop. The wind picks up, and the conditions turn poor.

Now, hang on to your leash, because things start to get interesting towards the end of the run. The standout session is Monday the 17th morning. We’ve got glassy conditions, a clean 5ft of NW swell, and the combined energy jumps to 239. This is the first time the forecast says “expect good surf conditions.” The river will have some proper push, and with the wind off, it’ll be smooth. This is the one to circle on your calendar.

Tuesday the 18th morning is a decent follow-up with 4ft of NW swell, clean cross-offshore winds, but the energy is lower at 152. It’s still surfable, just not as punchy.

The swell bumps up again on Wednesday the 19th morning with 5ft from the NW, but the wind is a stiff 12 mph side-offshore, which can make it a bit tricky. The water temperature is about average for this time of year, so no need for a thick wetsuit.

The real heavyweight arrives on Saturday the 22nd morning. The swell is 6ft from the NW, but the period is a very long 11 seconds, and the combined energy is a massive 698. This is a proper groundswell. The issue is that wind is a strong 16 mph cross-offshore. For a river break, that long period and size can make for some powerful, walled-up waves. This is for experienced surfers only. The crowd factor is likely, as it’s a popular spot.

So, the play is: wait for the glassy mornings on the 11th, 12th, and 14th for small clean waves, but the absolute winner is the 17th morning. The 22nd morning has the size and power, but it’s a bit of a wildcard with the wind.

Stay stoked, and I’ll catch you in the lineup.

Rusty

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