El Mongol Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s look at El Mongol for the next couple of weeks. This is a consistent reef break, solid for intermediates, and it really likes a swell from the NNW. But fair warning – we’ve got to slog through a flat, crummy start before the good stuff shows up.

The next few days are a bust. We’re looking at tiny, weak 2ft to 3ft of WNW/NW windswell with a short, lifeless 7 to 8 second period. The combined wave energy is pitiful, between 41 and 88. That’s nothing to get wet for. The water temp is 70°, which feels a touch warmer than usual for this time of year, but it’s not gonna make those floppy waves any better. Thursday afternoon and Friday – just stay home.

Saturday the 5th of September is where this forecast finally wakes up. Saturday morning brings in a clean 5ft swell from the NW, with a proper 13-second groundswell period. The wave energy jumps to a solid 721 – that’s moderate energy with some serious push. The wind is light and cross-offshore from the east, so the surface will be clean. This is one of the two best windows. That longer period swell loves a reef, so you’ll get some nice lines at *El Mongol*, but remember the sets will be a bit more spaced out. Saturday afternoon pushes to 6ft from the NNW with even more energy (983), but the wind picks up a little, so the morning is the pick.

Sunday the 6th of September drops off with messy cross-onshore winds and shrinking swell. We’ll scratch through a few days of average, small conditions on the 7th and 8th. There are some glassy moments, but the swell is just too weak and inconsistent to get any real juice.

Here’s the big one: Sunday the 13th of September. Circle that date. This day unloads with a strong 6ft swell from the NNW, and the period holds at a solid 13 seconds. The wave energy cranks to 1115 – that’s strong energy. And here’s the kicker: Sunday morning is glassy. Dead flat water. That is the absolute highlight of the entire 16-day window. The reef is going to be clean, lined up, and the size is still manageable for intermediates. Because crowds are “often” here, you’ll want to be first in the water for that glassy session.

After that peak, Monday the 14th and Tuesday the 15th drop back to a modest 4ft to 3ft of NNW/NW swell, with energy falling to 338 and then 156. Still clean in the mornings, but nothing special. The second week fades into ordinary, with Wednesday the 16th showing some glassy 4ft surf, but the fire is all in that first week.

Bottom line: You’ve got two real windows to aim for – Saturday morning the 5th of September, and the absolute standout, Sunday morning the 13th of September. The rest is just filler. Don’t waste your time.

Rusty.

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