Marengo Surf Forecast and Surf Report

Alright, Rusty here, let’s talk about what’s coming down the line at Marengo.

This forecast is looking pretty solid for a while, with a real nice run of clean, offshore conditions kicking off this weekend. Water temp is sitting at 57° right now, which is about average for this time of year, so no major surprises there.

First up, we’ve got a good window starting Saturday morning, the 29th of August. The swell is a clean 4ft from the southwest with a 14-second period, and it’ll be glassy with a gentle offshore breeze. That’s going to be clean as a whistle and a great option for a wide range of surfers. The energy levels are moderate (736), so there’s enough push without it being a grunt. Saturday afternoon sees the swell bump up to 7ft from the southwest, period still 14 seconds, and the wind stays offshore moderate. The energy jumps right up (2220), and while it’s getting into the size where it’s more for experienced surfers, the conditions are excellent.

The standout window here is actually Monday the 31st of August. You’ve got a 6ft southwest swell with a long 15-second period, light offshore wind from the west at 6 mph in the morning, and the energy is strong (1698). This is a reef and point break, so that longer-period groundswell is going to wrap in and set up real nice. The offshore wind will keep it clean and lined up. Morning is the pick for the best shape and easiest paddling between sets. The afternoon stays just as good with a 6ft swell (14-second period) and cross-off wind that still keeps it clean.

There’s a bit of a stretch from the 1st of September through the 3rd where the wind gets a little funky with cross-off breezes and the quality drops into the marginal zone, but we pick it back up on the 4th of September. Friday the 4th afternoon has a proper pulse: 8ft from the southwest, 15-second period, moderate offshore wind, and huge energy (2536). That’s an expert-only day with that size, but the conditions are excellent.

Heads up for the weekend of the 6th and 7th of September – the swell gets big and raw. Sunday the 6th afternoon is pushing 13ft from the WSW with a short 12-second period and fresh offshore wind, energy is massive (5793). That’s biggest on offer, but it’s a beast and the wind is strong, so it’s really only for the experienced crew, and the period is shorter so it might be a bit chunky.

Looking further out, the 11th of September morning is a real standout too. You’ve got a 8ft southwest swell, a very long 16-second period, gentle offshore breeze from the WNW at 9 mph, and massive energy (3870). At a point and reef break like Marengo, that kind of long-period groundswell with offshore wind is going to produce some absolute gems. Clean, powerful, and well-shaped.

The final day on the 12th of September afternoon is a beautiful note to end on – the swell drops to 5ft from the southwest, still a nice 16-second period, and the wind goes glassy from the NNW at just 3 mph. That’s about as good as it gets for a clean, relaxed session.

Overall, the first week has the most reliable standouts, especially Monday the 31st and Friday the 4th. The second week has some serious size and promise, but like any long-range call, take it with a pinch of salt. Crowds are possible here now and then, but with this consistent run of clean conditions, it’s well worth checking.

Stay frothy.
Rusty

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