Rosa Surf Forecast and Surf Report

Alright folks, Rusty here. Let's break down what's on the menu for the Rosa area. It’s a bit of a mixed bag, but there are a few windows worth paddling out for.

The forecast kicks off with a small pulse on Sunday the 13th afternoon, but it’s nothing to get excited about with 5-foot south swell and a short period. The real story starts to build from Monday morning the 14th. We’ve got a solid, long-period groundswell arriving from the south, with 4-foot waves and a period of 11 seconds. The combined energy is moderate at 495, but the clean cross-off wind from the SW is what makes this a standout for a morning session. This is the pick of the first week.

The swell dips a bit through Tuesday, but Wednesday morning the 16th sees it jump back up to 6 feet from the south, again with clean cross-off winds. However, by Wednesday afternoon the wind picks up from the south at 15 mph, ruining the shape. A similar pattern follows for Thursday the 17th – a promising 6-foot morning with light cross-winds, but the afternoons get messy. Friday and Saturday are write-offs with onshore winds and choppy conditions.

The biggest swell of the period arrives on Sunday the 20th. We’re looking at 8 feet from the northeast with a combined energy reading of 1964, which is strong. This is expert territory only, and the wind is light and cross-shore, so it won't be a total washout, but the conditions are only marginal.

Then, a true gem appears. Monday morning the 21st. It's glassy, with zero wind, and a clean 6-foot east-northeasterly swell. This is the best chance for a truly perfect session, but keep in mind the northeast direction isn't the optimum for Rosa, and the energy is moderate at 512. Still, glassy conditions make everything better.

After that, the surf settles into a routine. Tuesday the 22nd and Wednesday the 23rd offer clean, smaller waves in the 4-foot to 5-foot range with cross-off winds, perfect for a log or a fun mid-length. Then, another stretch of poor onshore conditions hits from Thursday the 24th through Friday the 25th. There's a brief, glassy moment on Saturday the 26th with small 4-foot to 4-foot waves, and a late-season pulse on Sunday the 27th with clean, 6-foot waves but marginal conditions. The forecast ends on Monday the 28th with another glassy morning and 5-foot waves, a good way to finish.

The water temperature is a bit colder than normal for this time of year, sitting at 62°F, which is a notable 4°F below average, so you'll want a decent wetsuit.

Standout #1: Monday morning, September 14th. A solid 4-foot south groundswell (11 second period) with clean, cross-off SW wind. This is the most reliable, good-quality surf early on.
Standout #2: Monday morning, September 21st. Glassy conditions with 6-foot east-northeasterly swell. If it lines up, it could be the session of the whole forecast.

Rusty, signing off.

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