Marengo Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s talk about what’s on the table for the next couple of weeks.

We’ve got some solid SW groundswell lining up, but it’s a bit of a slow burn at the start. The first real action kicks off on Monday the 24th. The swell is already pushing 5 feet from the SW, with a period of 14 seconds pumping a decent 902 units of energy. It’s not perfect with a cross-off breeze, but there’s plenty of push. Marengo (reef and point) is the spot to watch. The water temp is about average for this time of year.

Tuesday the 25th sees a slight drop in size, but the swell direction is still good. The morning’s a bit messy with an onshore wind, but the afternoon cleans up nicely with a WSW cross-off and 4 feet of swell. Not a stand-out, but rideable.

Wednesday the 26th is a bit of a write-off. The wind gets up to 12 mph from the WSW, making the large 5 foot afternoon swell look a bit average. The energy is moderate at 680 units. The waves will be there, just not clean.

Now, Thursday the 27th… this is where it gets interesting. The morning is glassy. Zero wind, 3 feet of SSW swell, and a period of 11 seconds. The energy is only 328 units, but the clean conditions will make it look way better than the numbers suggest. A sneaky little session for a log or a mid-length.

But the real highlight—the one you’ve been waiting for—is Friday the 28th. The morning delivers a beauty: 5 feet of SW swell with a period of 18 seconds. That’s a very long period groundswell, and the energy is a massive 1518 units. With a light N cross-off breeze, the waves at Marengo will be clean, powerful, and offering some great lines. This is one for the experienced crew. The water is still about average temp.

Saturday the 29th goes glassy again in the morning with 4 feet of SW swell, but the energy is down to 482 units. The afternoon is clean but small. Good for a cruise, not a highlight.

Sunday the 30th is a teaser. The morning is glassy with 4 feet of SW swell and a period of 18 seconds, pushing 1027 units of energy. The afternoon sees a jump to 6 feet, but the wind turns cross-on, making it a bit lumpy. The morning is the pick.

Monday the 31st is another standout. Offshore wind in the morning, 5 feet of SW swell, and a period of 17 seconds. The energy is 1849 units. The afternoon is bigger at 6 feet with a 15-second period and a clean offshore breeze. This is a solid day for the shortboard.

The first week of September keeps the swell going. Tuesday the 1st and Wednesday the 2nd both have 5 feet of SW swell with clean conditions. The energy is moderate to strong, around 1000-1281 units. Good, consistent surf.

Then we get a bit of a lull on Thursday the 3rd and Friday the 4th. The swell drops to 4 feet and then 3 feet. The energy is low. Not worth getting excited about.

But hang on, because Saturday the 5th is a stunner. The afternoon delivers 6 feet of SW swell, a period of 17 seconds, and a gentle offshore breeze. The energy is 2044 units. This is another big one for experienced surfers.

Sunday the 6th and Monday the 7th see the swell get big—7 feet to 8 feet from the SW. The wind is cross-off, but the energy is well over 2000 units. This is serious, powerful surf. It’s going to be a handful, with big walls of water. Not for the faint of heart.

Finally, Tuesday the 8th of September, the morning offers 7 feet of SW swell, a 15-second period, and a moderate offshore wind. The energy is 2089 units. Perfect for the experts who have been waiting for a true, clean, big swell day.

If you’re looking for the best of the best, set your alarm for Friday the 28th of August morning and Saturday the 5th of September afternoon. Those are the standouts.

Stay safe out there.

Rusty.

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