Viana do Castelo Surf Forecast and Surf Report

Alright, folks, Rusty here. Let’s get into it. This forecast for Viana do Castelo is a bit of a mixed bag. We’ve got some swell coming, but a lot of it gets hammered by wind or just doesn't line up right. The water’s sitting around 69°, which is a touch warmer than we’d usually expect for this time of year, so that’s a nice little bonus if you’re getting in.

We start off quiet. Tuesday the 11th is pretty much a write-off with a weak 3 ft NW swell and a messy cross-shore wind that’s only pushing 192 units of energy. Not worth suiting up.

The first real glimmer of hope comes Wednesday morning, the 12th. We’ve got a clean 3 ft W swell, with glassy conditions. That light air is a major positive – it’s going to be smooth out there. The energy is moderate (220). This is your best bet early on for a clean, fun session.

After that, things get ordinary. Thursday morning the 13th has a touch more size at 4 ft, but it’s on the cross-onshore wind, so the shape will be grotty. Friday the 14th sees the swell drop to 3 ft, and while the wind is clean, the energy is weak at 116. Just small and average.

Saturday the 15th is where it gets interesting, but not in a good way for most of us. The morning jump to 6 ft (424 energy) from the NW with a short 8-second period, but the wind is clean. By the afternoon, it’s pumping 10 ft with a massive 936 energy, but that’s well over 8 ft and paired with 25 mph wind. That’s expert territory only, and it will be a beast.

Sunday the 16th and Monday the 17th mornings are your next windows. On Sunday morning, we’ve got 6 ft (341 energy) from the NNW, clean with a light breeze. Monday morning is similar at 5 ft (245 energy). Both have short 7-second period, so it’ll be a bit weak and choppy, but the clean conditions make them surfable.

The standout of the whole run, if you have the skills, is actually Thursday afternoon, the 20th of August. The swell is hitting 8 ft from the NW with 907 energy. The wind is clean. However, the forecast says it’s simply too big for this break. For the rest of us, stick to the Wednesday 12th morning or the Sunday 16th and Monday 17th mornings.

The second week drops off hard. From the 22nd onwards, it’s all poor surf or cleaning-up wind that’s too strong, with swell sizes bouncing between 2 ft and 6 ft but always with messy conditions. Don’t hold your breath for that period.

Signing off, Rusty.

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