Marengo Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s look at what’s ahead for Marengo, a reef and point setup that’s pretty exposed to the south-west. The water temp is about average for this time of year, nothing weird going on.

The first real chance to get wet kicks off Friday, July 31st. The morning starts clean with a light offshore breeze from the WNW, and a solid 4ft SSW swell with a nice 12-second period pushing in. The combined energy is moderate (544). It’s a decent beginner-friendly wave to ease into the weekend. The afternoon holds similar, with a 4ft SW swell and clean conditions.

Now, Saturday August 1st is where things get interesting. The morning is a bit messy with a cross-shore wind, but the afternoon? That’s a standout. The swell jumps to 6ft from the SW with a very long 17-second period, and the energy is strong (2787). The wind goes light and cross-off, so it’ll be clean. This is going to be a proper groundswell, and at a point and reef break like Marengo, those long-period lines will wrap in beautifully. It’s getting a bit big for beginners, but experienced surfers are going to have a ball.

The good run continues Sunday August 2nd, but the wind picks up to a moderate breeze on the morning, making it clean but a bit bumpy. The swell holds at 6ft, though the period drops to 16 seconds. Monday morning is similar, but the Monday afternoon window on August 3rd is another standout. The wind goes offshore again, a moderate breeze from the WNW, and the swell is 6ft from the SW with a 14-second period, delivering strong energy (1544). It’s October-level quality for experienced paddlers.

Tuesday August 4th morning is for the brave only. The swell hits 10ft from the WSW. That’s big, expert territory, but the wind is offshore and the energy is enormous (3277). Paddle out if you’ve got the skill, but this is a heavy session.

After that, the swell drops right off. Wednesday August 5th through Friday August 7th sees smaller surf, 2ft to 4ft, but with very long periods (15-19 seconds) and light winds, including a glassy morning on Friday August 7th. It’s clean, but tiny. Good for a longboard and a sunrise.

Then we hit a bad run. From Saturday August 8th through Sunday August 9th, the wind is strong and cross-shore, making a mess of the 5ft swell. Poor conditions. That continues into Monday August 10th, with a lot of wind, making it marginal at best.

Hold on, because Tuesday August 11th is a monster. The swell is forecast at 20ft from the WSW. That’s a massive, dangerous amount of water, and the energy is off the charts (21239). The wind is offshore, but the swell is way too big for Marengo, even for the experts. This is a survival day, not a surfing day.

The wind turns nasty on Wednesday August 12th with a strong breeze from the WSW, making the 5ft swell a complete write-off.

But look at the end of the window. Thursday August 13th and Friday August 14th are a fantastic one-two punch. On Thursday, the swell is 8ft to 8ft from the SW with a very long 19-second period. The wind is light, making it clean. The energy is very strong (over 4000). This is a proper groundswell of the highest quality, and at a point break, it’s going to be epic. Expert territory for sure. Friday holds similar, with 8ft from the SW and an 18-second period, clean and offshore. This is the best run of the outlook, far out in the forecast, so it’s a promising one to keep an eye on.

Saturday August 15th wraps it up with a smaller but still fun 6ft SW swell and clean conditions.

Honestly, the standout is the combination of Saturday afternoon August 1st and the Monday afternoon August 3rd, with the massive groundswell at the end of the month being the real long-range prize. Crowds are possible at Marengo, so get in early.

Rusty out.

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