La Isla Surf Forecast and Surf Report

Alright, let’s get into it.

It’s Rusty here, and we’re looking at a solid 16-day stretch for La Isla, but don’t get too excited just yet – the first few days are a bit of a slow burn. We’ve got a long period groundswell rolling in from the SW, but the wave heights are pretty modest for a while, and the wind is playing a bit of a teasing game. For the first four days, from Monday the 7th through Thursday the 10th, it’s a frustrating mix of cross-shore and clean conditions, but the swell is consistently under 4 ft, keeping the quality marginal at best. The water temp is sitting about average for this time of year, so nothing unusual to report there. The combined swell energy is hovering in the mid-800s to low-900s (around 867 to 958), which is moderate energy, but it just isn't translating into great shape.

The first real standout pops up on Tuesday afternoon, September 8th. The swell nudges up to 4 ft from the SW, with a 14-second period, and the wind turns cross-offshore. It's clean. The energy is at 928 (moderate), and while it's not a huge wave, for an advanced spot like La Isla (a reef and point break), those clean conditions with a bit of energy will make for some fun, lined-up waves. That’s your best bet early on. The crowds are "often", so you’ll have company.

Then things get a bit choppy. Friday the 11th through to Sunday the 13th, the swell drops off and the wind gets messy – cross-on and cross-shore. The wind speed is light enough at 6 to 9 mph, but it’s just not cooperating. The waves hover around 3 ft to 5 ft, but the period drops to a short 8 seconds on Saturday the 12th and Sunday the 13th, making for weaker, less organised surf. The energy dips into the 500s and 400s (weak to moderate). Sunday afternoon (Sept 13) sees a slight improvement with clean conditions, but the 5 ft swell is short-period and might be a bit tricky at a break like this.

Now, a big shift comes on Monday, September 14th. The morning is messy with 6 ft and cross-on wind, but the afternoon turns it around. We get a clean 3 ft wave from the SW with a very long 17-second period. The energy is back up to 751 (moderate). That long period will make for some beautifully lined-up waves at this reef and point, but it might also get a bit straight at times. That’s your second genuine highlight in the first week and a half.

From there, it’s a slow fade. Tuesday the 15th through Thursday the 17th is a frustrating grind of small 2 ft to 3 ft surf, mostly with light cross-shore wind. The energy drops steadily from 685 down to 270 (weak). Nothing to write home about.

The second week is a bit of a dead zone for quality. Friday the 18th and Saturday the 19th offer very little. Saturday morning the 19th has a tiny 1 ft wave from the SW with a 20-second period – a real long period ghost swell. The energy is only 305 (weak). Clean conditions, but it’s barely breaking. Sunday the 20th through Tuesday the 22nd is a write-off: cross-on wind, poor conditions, and tiny, weak swell. The energy is down in the 200s and 300s. This stretch looks more like a kite-surfing setup than a paddle day.

So, to sum it up: your top two windows are Tuesday afternoon, September 8th, for that clean, 4 ft SW groundswell, and Monday afternoon, September 14th, for the 3 ft, 17-second groundswell in clean conditions. Get on it early because the second week is a total loss.

Rusty.

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