Playa de Rio Sieira / As Furnas Surf Forecast and Surf Report

Alright, folks, Rusty here. Let’s talk about what’s on the menu for the next few weeks.

Honestly, looking at the charts for Playa de Rio Sieira / As Furnas, it’s a pretty quiet stretch. We’re not seeing any proper swell pulses coming through, just a lot of small, weak energy. The water temp is sitting at 67°, which is just about bang on for this time of year, so nothing weird going on there.

The first real chance to get wet comes in on Saturday morning, the 8th of August. It’s tiny, only 1 foot from the west. The wind is a light cross-off from the south, so the surface will be clean, but the energy is weak (26). You’ll be on a small wave board, and it’s really just a paddle to stretch the arms. Sunday morning, the 9th, is a bit better with 3 feet from the west-southwest and light cross-off winds, so the surface stays clean. The combined energy ticks up to a moderate 117, so there’s a little more push. The period is short at 7 seconds, so expect lumpy, weak waves that close out a bit. It’s surfable, but nothing to write home about.

Monday morning, the 10th, is a glassy one with 1 feet from the northwest and a 5-second period. The wind is dead calm, so it’ll look like a pond with a tiny bump. It’s clean, but the energy is a measly 55. Tuesday the 11th is also glassy in the morning, with 1 foot from the west-northwest at a 10-second period, which adds a little bit of shape, but the energy is still weak (45). You’ll get a few cleaner lines, but it’s strictly for the longboard or a foamie.

From Wednesday the 12th through to the 19th of August, the onshore winds kick in hard. We get a mix of cross-on and onshore breezes, mostly from the north and northwest, with speeds up to 19 mph. The swell height hangs around 2 feet to 3 feet, but the quality is poor. The combined energy does get up to moderate levels, hitting 209 on Thursday the 13th, but it’s all blown out and choppy. The water will be lumpy, and it’s really not worth paddling out. Honestly, for a beach and reef setup like this, it looks more interesting for a kite session than a surf session during that stretch.

We do have a little window on Wednesday the 19th of August. The morning is glassy, with a light SSW wind, and 3 feet from the northwest at 8 seconds. The energy is a moderate 150. It’s small, but it’ll be the cleanest surf we’ve seen in over a week. For a beginner, this is actually the best on offer. The consistency is fairly consistent, but you might have to share it with a few others as crowds are sometimes around.

The last few days, from the 20th to the 23rd, are a mixed bag of tiny, weak waves. The 22nd of August (Saturday) sees a bit of offshore wind from the SSE in the morning, with 1 foot from the southwest and a long 15-second period. That long period will draw out the lines, but the energy is weak (63), so it’s more of a longboard glide than a proper wave. The 23rd of August has a bit more size at 2 feet from the northwest, with light cross-off winds and a moderate energy of 119, but it’s still small.

The standout: If you’re a beginner or just want to get a clean paddle, the Wednesday morning, 19th of August at Playa de Rio Sieira / As Furnas is your best bet. The glassy conditions and the 3-foot swell from the northwest will give you the cleanest, most user-friendly waves of the whole forecast. For everyone else, it’s a quiet spell.

Rusty.

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