Avellanas Rivermouth Surf Forecast and Surf Report

Alright, let’s get into it. The long-range picture out here is a bit of a mixed bag. We’ve got a solid stretch of south swell running, but the winds are the real story, and they’re going to dictate when you actually want to be in the water. Overall, it’s not big, but there are some clean windows where the rivermouth will be firing.

We’re starting off on Tuesday the 8th. Morning looks pretty average, with a moderate easterly breeze messing things up. There’s some swell there, around 2ft from the SW with a long 18-second period, but it’s not doing much for us. The energy is moderate at 629, but it’s just not clean. By the afternoon, things change completely. The wind drops to a glassy 3 mph from the west, and all of a sudden it’s clean. The swell is still small at 2ft, but the conditions are right. This is a good sign of things to come.

Wednesday the 9th is a bit of a washout in the morning with a moderate ENE breeze making it rough. The afternoon brings a cross-on breeze and marginal conditions, so not a great day.

Thursday the 10th is when we start to see some more size. Morning has a moderate cross-on wind, but the swell is picking up to 4ft. The energy is moderate at 1130. It’s not perfect, but it’s building. The afternoon is where it’s at. The wind swings to a gentle cross-off from the SW, and the forecast says “very good surf conditions.” This is the first standout of the period. The swell direction is SW, which is right in the wheelhouse for Avellanas Rivermouth.

Friday the 11th follows a similar pattern: average morning with cross-on wind, but the afternoon cleans up nicely with a cross-off breeze and clean conditions. Swell holds around 4ft. Another good afternoon session.

The weekend is a bit more mixed. Saturday the 12th is smaller, around 3ft, but the afternoon is clean with a light cross-off wind. Sunday the 13th drops further to 2-2ft, but the afternoon stays clean. Not much power there.

There’s a bit of a lull in the middle of the week. Monday the 14th has some long-period swell, 19 seconds, but it’s tiny, only 1ft in the morning. Afternoon sees a slight bump to 2ft and clean conditions. Tuesday the 15th is similar, with the swell picking up to around 3ft by the afternoon but with a cross-on wind. It’s there, but not great.

Wednesday the 16th brings a bit more size, 4ft in the morning, but the winds are onshore and it’s messy. Not worth it. Thursday the 17th is a better bet. The afternoon sees a light cross-off wind and clean conditions, with the swell around 3ft. The forecast is “very good surf conditions” again. Another standout window.

After that, the energy starts to fade. Friday the 18th and Saturday the 19th have some clean pockets, especially Saturday morning when the wind is dead calm and glassy. The swell is small, around 2ft, but it’s clean.

Then we get one more real highlight. On Sunday the 20th, the swell picks up again with a long 19-second period, and the winds are favorable. The morning has a light cross-off breeze and clean conditions, and the afternoon is even better with a gentle offshore wind. Swell is only 3ft, but the quality is there. This is probably the best combination of clean conditions and good swell direction for the whole run.

The last couple of days, Monday the 21st and Tuesday the 22nd, have some clean afternoon windows with light cross-off winds, but the swell is dropping. Wednesday the 23rd is pretty much done. The period between the 21st and the 23rd is a slow fade, with nothing that stands out.

So, if you’re looking for the best of it, focus on Thursday the 10th in the afternoon, and Sunday the 20th, which is a bit further out but promising. The swell direction is consistently SW, which is exactly what this place wants. Water temp is 86°F, which is a touch warmer than normal for this time of year, so you won’t need a wetsuit.

One thing to watch: the swells are long-period, especially the 17-19 second stuff. That’s great for a rivermouth setup like this, as it focuses the energy nicely. It’s not a beach break, so it should hold up well. There will be times it’s a bit too straight, but overall, the quality will be there.

Crowds are likely, this place is fairly consistent, so be prepared to share the peak, especially on those clean afternoons. It’s intermediate-level surf, so if you’re just starting out, keep an eye on the days when it’s over 5ft... but honestly, we don’t get there in this forecast. It never really gets big, so it’s all pretty manageable.

Overall, it’s not a huge swell window, but there are definitely enough clean sessions to make it worth your while. Get on those glassy afternoons and you’ll be smiling.

Rusty

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