Viana do Castelo Surf Forecast and Surf Report

G’day, Rusty here. Look, I’ll be straight with you—this stretch at Viana do Castelo starts off pretty grim. The first few days are a write-off, with rain, wind from all the wrong angles, and junky little waves. Water temp is sitting at 62°, which is a hefty 5° colder than normal for this time of year, so you’ll be wanting a good thick steamer.

The first real glimmer comes on the morning of Friday the 28th of August. A solid WNW swell rolls in at 8 ft with a clean 11-second period, and the wind swings offshore out of the north. The wave energy is cranking—strong as anything (1576)—and the river mouth setup should be handling that size. Thing is, that swell is pushing past the comfort zone for most, so this one’s for the experienced crew only. Crowds are often a thing here, and with conditions that clean, you can bet there’ll be a few locals out.

Saturday the 29th backs off a fair bit. Morning brings a smaller 4 ft NW swell with glassy winds again—clean as a whistle. It’s a much more doable size for the average surfer, but don’t expect any fireworks. The afternoon gets a bit bumpy with a cross-shore kicking in.

Nothin’ much happens Sunday the 30th—just small, ordinary stuff. Then we get a proper run from Monday the 31st into Tuesday the 1st of September. Mornings are the go: clean, cross-off breeze, with a consistent 6 ft NW groundswell running on a solid 10-second period. Wave energy is solidly in the moderate-to-strong range (597 to 646). That's the pick of the first week for the everyday surfer—good shape, good push, not too big.

After that, the second week gets a bit messy. Swell dips and picks up again, but a lot of it comes with stronger winds or tricky tide issues. Friday the 4th of September afternoon picks up a clean but punchy 5 ft WNW swell with an 11-second interval, but the wind is fresh, making it a marginal call.

The standout of the whole outlook is the morning of Saturday the 5th of September. A solid 7 ft WNW swell with a 12-second period, very clean under a light offshore breeze, and the wave energy is meaty at 1608. That’s the one to circle on the calendar. Just keep in mind we’re looking at a week and a half out, so plans might shift, but if it holds, it’ll be proper.

Later on, the 7th of September sees a monster 13 ft swell rolling in with a 17-second pulse, but that’s way too big for this river break—expert only, and even then, sketchy. The wind is cross-onshore too, so not ideal.

Overall, Viana do Castelo has a slow start, but the mornings from the 28th of August through the 1st of September, and especially the 5th of September, are your real windows. The river mouth can handle a longer-period groundswell well, so don’t be scared off by the 11- to 12-second stuff—it’ll shape up nice and fat.

Stay wet,
Rusty

Read more