San Juan Surf Forecast and Surf Report

Right, gather 'round, grab a coffee. Rusty here. Let's cut through the noise and look at what's on the cards for San Juan.

We're looking at a 16-day window that, honestly, starts off with a bit of a flat spell. The first few days are a non-starter for any serious paddle surfing. It's not until the 15th of July that we see the swell number start to climb, but don't get your hopes up just yet. The wind is a massive problem for the entire first week and beyond.

For the first week, through to the 14th, it's a write-off. Tiny swell, poor quality, and the wind is either onshore or cross-onshore, messing up any chance of a clean face. We're talking combined wave energy in the low double digits (28 to 85) – that's barely a ripple. Don't bother.

The real story here is a significant pulse of swell that starts building on the 15th of July. The swell height jumps from 5 ft on Wednesday morning to 8 ft by Saturday the 18th. The combined energy kicks into high gear, hitting 1126 by Saturday morning – that's a lot of power in the water. The direction is steady from the NNE, which is a solid angle for this spot. The period starts around 6-7 seconds, which is short-period windswell, but by the 18th it's up to 9 seconds, giving the waves a bit more shape.

But here's the kicker: the wind. For this entire 16-day run, the wind is a brutal, relentless onshore breeze from the NNE, gusting 18-25 mph. It's a strong breeze, sometimes a fresh breeze, and it's pounding straight onto the face. This is going to create ugly, choppy, blown-out conditions. For a reef break like San Juan, that's a recipe for a washing machine.

Because of the size and the wind, this setup is more interesting for the kite crew than us paddle surfers. The swell is big and powerful, but the wind is going to make it a full-on battle. For a beginner, anything over 5 ft is a handful, and this is going to be well over that. For experts, the 8 ft-plus days (18th and 19th) are going to be a proper challenge with that wind, but if you're a masochist, you might find a few. The longer period swell (9 seconds) is better for a reef, but the wind is the enemy.

There is one standout, but it's a long way off and carries a big caveat. The 18th and 19th of July have the biggest swell (8 ft) and the highest energy (1126), but it's blown out. The 23rd and 24th of July see the swell drop back to 6-7 ft, with the wind still onshore, but a little less aggressive. Don't get too excited about the long-range stuff; it's a long way out and the wind pattern is locked in.

So, for the paddle surfer, this is a 16-day window of near-constant wind. The first week is flat and poor. The second week has size but it's a battle against the elements. A few days around the 18th-19th might offer a heavy, windy challenge for the hardcore crew, but for clean, fun waves? Look elsewhere. The water temp is about average for the time of year.

Rusty.

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