Marengo Surf Forecast and Surf Report

G’day, Rusty here. Let’s break down what’s in store for Marengo over the next couple of weeks.

It’s a slow burner, but the first real action hits on Thursday, the 3rd of September. We’ve got a solid SW swell rolling in at 13ft with a 14-second period, and the wave energy is pumping hard (8038). The wind is a fresh offshore from the W at 22 mph, keeping things clean. The water’s sitting at 58°, which is a touch warmer than normal for this time of year. This is a reef and point setup, so that long-period groundswell will line up nicely, but 13ft is big—not for beginners. Crowds are only sometimes a problem, so you might have a bit of company, but it’s worth it. Thursday afternoon goes even bigger: 18ft from the WSW, still offshore, and the energy is off the charts (15539). This is a standout. If you’re experienced, this is your window.

Friday the 4th drops back to 10ft SW, but the period stretches to 16 seconds—proper groundswell. The wind is cross-off from the NW, clean, and the afternoon session is excellent for experienced surfers. Still a solid day.

Saturday the 5th gets messy. The swell is still there at 7ft, but the wind is howling offshore from the WNW at 22 mph, and there’s a risk of thunderstorms. It’s clean but hard work. Sunday the 6th is more relaxed: 6ft SW, gentle cross-off winds, and clean conditions. The energy is moderate (1402).

Monday the 7th sees the swell drop to 2ft. It’s small, but the wind is offshore and light. Not a standout, but surfable. Tuesday the 8th is a pleasant surprise: 4ft SW with a very long 18-second period, light offshore wind, and clean conditions. The energy is moderate (1295). That’s a lovely, clean day for a point break.

Now, here’s the big one. Wednesday the 9th of September—mark it. The afternoon brings an 12ft SW swell with a 20-second period and energy surging to 10835. The wind is cross-off from the SSW, clean. This is exceptional for expert surfers. The morning is 8ft, also clean. If you’re chasing size and power, this is the best of the run.

Thursday the 10th holds onto that size with 12ft SSW in the morning, dropping to 10ft in the afternoon. Wind is light to gentle, cross-off, and clean. Excellent for those who know what they’re doing.

Then, from Friday the 11th through to Sunday the 13th, things go quiet. The wind turns onshore or cross-shore, the swell drops, and it’s not worth paddling out for about three days.

Monday the 14th to Tuesday the 15th picks up again with 5ft to 7ft SW swell, but the wind is fresh offshore, so it’s clean but marginal. Not a standout.

Wednesday the 16th is a nice window: 5ft SW, light NW wind, cross-off, and clean. The energy is moderate (1127). A good solid midweek session.

Thursday the 17th is a hidden gem: 5ft SSW, light wind from the north, clean cross-off conditions. The energy is moderate (1011), and it’s a pleasant, uncrowded surf.

Finally, Friday the 18th of September brings a fresh 8ft SW swell, but the wind is cross-off and strong from the NNW. The afternoon cleans up nicely with light wind and 7ft swell. Good for experienced surfers.

Overall, the standout days are Thursday the 3rd and Wednesday the 9th. Thursday the 3rd has the biggest size with clean offshore wind, and Wednesday the 9th has that incredible 20-second period groundswell with excellent conditions. If you’re only paddling out once, make it one of those.

Rusty.

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