Marengo Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s take a look at the next couple of weeks for Marengo. We’ve got a proper run of surf coming, but it’s going to be a mixed bag of some really solid, powerful swells mixed with some wild, messy conditions.

The pattern kicks off with a massive pulse of energy. Thursday afternoon the 3rd of September, we’re looking at a serious 18-foot swell from the WSW, with a very long 14-second period. The combined wave energy is absolutely pumping at 15,776, so you’ll feel that raw power from the moment you paddle out. This is big, heavy stuff – over 8 feet, so this is strictly for experienced surfers with a big-wave board. The wind is a fresh 30 km/h offshore from the W, which will clean it up nicely, but that’s a lot of ocean moving around. The water temp is sitting at 57°, which is about a degree warmer than normal for this time of year, so a little warmer than you might expect.

After that initial blast, the swell drops a bit but stays solid. Friday the 4th, we’ve got 10-foot from the SW with a 16-second period. The energy is still substantial at 3,866. The morning is a bit cross-off, but the afternoon brings lighter winds from the NNW at 15 km/h, making for cleaner conditions. It’s still well over 5 feet, so it’s a bit much for the beginners, but the quality is there for anyone who’s comfortable.

Saturday the 5th is a tale of two sessions. The morning gets messy with 30 km/h cross-off winds and 7-foot swell. The real standout for the day is the afternoon. The wind swings back to a fresh offshore from the W at 35 km/h, cleaning up a solid 16-foot, 15-second WSW swell. The energy is massive again at 12,451. This is another big, powerful day; expert territory only.

We’ll see a bit of a lull through Sunday and Monday, with the swell dropping from 6-foot down to 2-foot. The wind stays favorable on Sunday with a gentle offshore, but the energy drops off a cliff. The real magic returns on Tuesday the 8th and Wednesday the 9th. Tuesday morning sees a light 10 km/h offshore wind cleaning up a 4-foot, very long-period 18-second swell from the SW. That long period will give you some proper, lined-up waves, especially at the point. The energy is moderate at 1,434, but the quality from the period and the clean wind is top-notch. Wednesday afternoon, the swell jumps back up to 13-foot with a 19-second period and a combined energy of 10,319. That’s a very long-period groundswell, and while it’s perfect for the point, those long periods can make it a bit straight at the beach. Still, with moderate cross-off wind, it’s a big day for the experts.

The weekend of the 12th and 13th is a bit of a write-off. The wind goes cross-on and then cross-shore, and the swell fades. The conditions are poor, and the energy is low. We’ve got a few days of flat-to-messy surf.

The forecast brightens up again for the middle of the second week. Tuesday the 15th, we get a building trend. The afternoon is a real gem: glassy conditions with a 4-foot, 15-second SW swell. The energy is low, but the wind is glassy from the ENE – zero wind, perfect for a longboard or a funboard. Then Wednesday the 16th morning is even better: glassy calm, 4-foot, 14-second SW swell, and the energy is moderate at 1,114. That’s the best pick of the second week. It’s a smaller, clean, and friendly wave for everyone.

The final few days from the 17th look a bit wild again. The wind from the SSW is howling at 50 km/h on Thursday morning, with a 11-foot swell. Even though it’s cross-off, that’s a gale force wind, and it’s going to be a chaotic, blown-out mess. Not for the faint of heart.

So, the two true standouts are the Thursday afternoon the 3rd for the sheer, raw power of that 18-foot, groundswell session with offshore wind, and the Wednesday morning the 16th for a much smaller, glassy, and perfect session that everyone can enjoy. Crowds at Marengo can be a thing sometimes, but on a weekday like that Wednesday, you might have it all to yourself.

This is Rusty, signing off.

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