Marengo Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a look at what’s coming down the line for Marengo.

The next couple of days are pretty quiet, but things kick into gear from Friday the 28th of August. That’s when the first real pulse of swell arrives, and honestly, the whole 16-day window has a lot of potential if you pick your moments. There are a couple of absolute standouts though, so pay attention.

Starting off, Thursday the 27th is a write-off for any real surfing. You’ve got a tiny 2.6ft SSW swell with a 11-second period, decent for a paddle but not worth getting wet for. The energy is weak (312). Wait for Friday.

Now, Friday the 28th of August is where it gets interesting. We see a solid 5.2ft SW groundswell rolling in with an 18-second period. That’s a long period, meaning well-shaped waves with good gaps between sets. The wind is offshore from the WSW, so the surface will be clean and lined up. The combined wave energy is already strong (1522). This is a good one for experienced surfers. The water temp is sitting about average for this time of year, nothing unusual.

Saturday the 29th keeps the 4.3ft SW swell going with 14-second period and clean offshore winds. It’s a bit smaller than Friday but still very rideable and clean – a solid day for all skill levels, with moderate energy (746).

Sunday the 30th builds back up to 5.2ft to 5.9ft SW swell, but the wind is offshore and moderate. It’s still good, but nothing like Monday.

The standout of the entire forecast is Monday the 31st of August. This is the one you wait for. We’ve got a 6.2ft to 7.2ft SW groundswell with a 16 to 17-second period – that’s serious, long-period energy. But the real magic is the wind. It’s glassy. Flat calm. The combined swell energy is pumping at 2120 to 2832, meaning there is plenty of power in the water. This is clean, powerful, and perfectly lined-up. For experienced surfers, this is as good as it gets. Crowds are going to be thick, because everyone knows about Marengo, but for a Monday it might be manageable.

Tuesday the 1st of September is a bit of a letdown after that. The swell drops a little to 4.6ft to 5.2ft, and while the wind is cross-off, the fresh breeze makes it messy. The score suggests it’s marginal, and I’d say skip it unless you’re desperate.

Wednesday the 2nd sees a return of a fresh offshore wind, but the swell is a similar 4.9ft to 5.2ft. The morning has some light rain, but the afternoon cleans up. It’s okay, not a standout.

Thursday the 3rd and Friday the 4th are a mixed bag. Thursday is clean with a moderate cross-off wind, but Friday the 4th brings a massive spike in size – we’re talking 19.7ft of WSW swell on Friday morning. That’s enormous. The wave energy is off the charts (16887), but the wind is cross-off and the break is going to be too big for most. Only experts should even look at it, and even then, it might be more of a big-wave expedition. The afternoon drops to 9.8ft, but still big.

Saturday the 5th of September is still pumping big, with 9.8ft SW swell and a 16-second period, but the wind is offshore and gentle in the morning. This is one for the experienced crew who can handle big, clean groundswell. The energy is huge (4663).

Sunday the 6th of September is a real beast. The afternoon sees a 27.9ft WSW swell with a 16-second period and a wave energy reading of 42623. That’s not surfing; that’s survival. The forecast says it’s too big for the break. Don’t even bother.

Monday the 7th of September is your second big standout. After the chaos of Sunday, the swell backs down to a much more manageable 6.2ft to 7.2ft SW groundswell with a 17-second period. The wind is moderate offshore, and the energy is still very strong (2485 to 2761). This will produce clean, powerful, well-shaped waves. For experienced surfers, this is another belter of a day.

Tuesday the 8th builds back up to 18.0ft in the morning – again, too big for this break. But the afternoon drops to a much more manageable 13.1ft with a gentle offshore wind. The energy (13507) is extreme, but the wave size and the wind are a better mix. This is expert territory only.

From the 9th of September onward, the swell slowly drops but stays good. Wednesday the 9th has 9.8ft to 11.5ft SW swell with a 17-second period and cross-off winds. Thursday the 10th and Friday the 11th are in the 6.9ft to 16.4ft range, but the wind becomes more cross-shore. That Friday morning has a 16.

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