El Mongol Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it. We’ve got a solid 16-day window unfolding at El Mongol, and while it’s not non-stop epic, there are some definite windows to get excited about.

The overall pattern kicks off with a few smaller, cleaner days before a bigger pulse of NW groundswell arrives mid-period. The standout window is definitely the Sunday and Monday of the 13th and 14th of September. That’s where the real quality sits. There’s also a nice little dawn patrol session on the 20th that’s worth a look.

Let’s start at the beginning. Wednesday morning the 9th of September, the swell is already a playful 5 ft from the NW, with a period around 8 seconds. The water is about average for this time of year, and the wind is glassy – zero wind, calm as. That’s clean, clean surf. The combined energy is moderate (489). The afternoon picks up a little more size to 6 ft and a longer 10-second period, but the wind swings cross-shore, putting a bit of texture on the face. It’s still surfable, but not as pristine.

Thursday the 10th through Saturday the 12th sees the swell slowly drop. Thursday morning offers 5 ft NW swell with a clean cross-offshore breeze, making for clean, fun waves. The energy is moderate (376). The rest of that stretch gets smaller and more ordinary, with the swell bottoming out around 1 ft on Saturday afternoon. The energy drops right off (124), though the wind stays clean.

Now, here’s the one to circle on your calendar. Sunday the 13th of September, morning session. The swell bumps back up to a solid 5 ft from the NNW, and the period stretches to 12 seconds – that’s proper groundswell. The energy climbs to strong (770) and the wind is a light cross-offshore breeze. The waves are clean and powerful. This is the best of the best in this forecast. Good for intermediates, but the size and that long period mean it’ll have some punch. For a reef like El Mongol, that long period is a big plus for shape. Monday the 14th hangs on nicely with 4 ft and an 11-second period, still clean with a light cross-offshore, and moderate energy (320). A fantastic little run.

After that, the swell fades again through the middle of the week, with a few very small, glassy mornings on the 15th and 19th of September. The 19th Saturday morning, though, is a sleeper – 3 ft, glassy, and the energy is moderate (285). Clean, small waves for a longboard.

Then we get another promising window. The 20th of September, Sunday morning, brings 4 ft from the NNW with a 10-second period, and it’s dead calm – glassy. The energy is moderate (315). Another clean, fun session. The 23rd of September, Wednesday morning, is interesting – a tiny 2 ft swell but with a very long 18-second period, giving it surprising energy (458). That’s a proper long-period groundswell, and in glassy conditions it’ll feel a lot bigger and more powerful than the height suggests.

Overall, there’s enough to keep the quiver wet. The surf is a bit inconsistent at times, but the consistent, clean conditions and the solid pulses on the 13th and 14th of September are the real winners. The 20th is a great backup dawn patrol.

Rusty.

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