Ninja's Surf Forecast and Surf Report

Alright, let’s break it down for the next couple of weeks. There’s some good stuff if you’re keen, but you gotta pick your moments.

We’re starting at Ninja's, a reef break that’s fairly consistent and loves a south swell. Water temp is about 85°, right where it should be for this time of year.

The first few days are looking tidy. Friday morning (4th September) we get clean 5ft swell from the SSE, period around 11 seconds, and a light west wind – cross-off but real clean. The energy is moderate (503). Afternoon stays clean too with a light breeze.

Saturday (5th September) is the standout. Morning is glassy – flat calm – with 5ft SSE swell, period 10 seconds. That’s as clean as it gets. Energy is moderate (392). Afternoon stays glassy with 4ft waves. This is the pick of the first week. Crowds can be a thing here, so get in early.

Sunday morning (6th) is a bit cross, but the afternoon cleans up again with cross-off wind and 4ft swell. Monday (7th) is a bit marginal with cross winds and smaller 3ft swell – still surfable but not as clean.

Then things shift from Wednesday (9th). Swell direction goes to the SSW, and the period jumps to 17-18 seconds – proper groundswell. Wednesday morning has small 2ft waves but a very long period (18 sec) and clean conditions. The combined energy is moderate (591). This is more of a longboard or point break wave.

Thursday (10th September) is when it gets real. The swell jumps to 5ft from the SSW, period 16 seconds, but the combined energy rockets to 1505 – that’s strong energy. Winds are cross-off from the WNW at 9 mph, clean. This is expert territory. The swell size is borderline for beginners, but with that long period, it’ll be powerful and walled up at a beach break. For a reef like Ninja's, this could be incredible – though the long period might make it a bit too straight. Still, it’s a big, clean groundswell.

Friday (11th September) sees even more energy – 2120 in the morning! Swell is 4ft from the SSW, period 20 seconds in the morning. That’s a very long period. The wind picks up a bit (12-16 mph), but it’s still cross-off and clean. This is a serious swell. Again, best for experienced surfers. The afternoon remains similar.

Saturday (12th September) brings the biggest swell of the run – 5ft to 6ft from the SW, period 17 seconds, and combined energy still very high (2354 in the morning). Winds are strong cross-off (12-16 mph), and there’s a risk of thunderstorms. This is big, powerful, and only for experts. Afternoon drops slightly but is still heavy.

After that, the swell slowly drops through the second week. Sunday (13th) through Tuesday (15th) still have decent 5ft to 4ft SSW swell, but the wind stays strong (12-16 mph) and there are storm risks. The energy drops from 918 to 543. It’s still surfable but less reliable.

From Wednesday (16th) onwards, things get messy. Swell drops to under 3ft, winds swing onshore or cross-shore, and the conditions turn poor. The last few days (17th to 19th) are a write-off with cross-onshore winds and choppy surf. Not worth paddling out.

Best on offer: Saturday morning (5th September) for clean, glassy 5ft SSE swell – that’s the one. For big wave hunters, Thursday (10th) and Friday (11th) are the standout groundswell days, but only for the experienced crew.

Rusty.

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