Mainside Surf Forecast and Surf Report

Alright, let me level with you. Straight up, this forecast for Mainside is a tough one. We’ve got a lot of days ahead with wind just messing things up, especially through the start of the period. The real window worth paying attention to is that Thursday the 10th onward, when the wind finally plays nice.

Let’s break it down. Starting Saturday the 5th through to Wednesday the 9th, it’s pretty much a write-off. Winds are cross, cross-on, or just too strong, with most conditions described as lumpy and choppy. Swell shows around 5 ft to 7 ft, but the consistency is ruined by the wind. That 7 ft on Saturday the 5th (combined energy of 723) is a decent size but with 25 km/h cross-on wind and a risk of thunderstorms, it’s a mess. Not worth the paddle. The only upside is the water temp is 83°F, which is bang average for this time of year, so no surprises there.

Now, Thursday the 10th afternoon is where it starts to get interesting. We’ve got an offshore breeze from the ESE at 25 km/h, clean conditions, and the swell drops a bit to about 5 ft from the north (9-second period). That’s solid, long-period groundswell and the energy is moderate at 415. This is a real chance for clean, lined-up sets. The wind is moderate offshore, so it should be glassy and well-shaped. This is the standout moment, even if the forecast quality is only modest.

Friday the 11th keeps that offshore flow going – E to ESE winds at 20 km/h, clean, and consistent 4 ft to 4 ft north swell with a 9-second period. Energy sits around 253-288, so it’s not huge, but for a clean, glassy day at the reef, that’s the pick of the bunch. If you’re after a more manageable size, Friday morning is your call.

From Saturday the 12th onward, the swell really drops off. We’re talking 2 ft to 3 ft through to the end of the second week. Winds stay mostly offshore or cross-off, but the lack of size means it’s small and weak. There’s a little bump on Tuesday the 15th with about 3 ft from the east (8-second period) and clean conditions, but honestly, this is beginner-friendly at best. The combined energy is only 170, which is weak. By Wednesday the 16th, we’re into 1 ft to 2 ft stuff, and even though the period stretches out to 13 seconds, it’s just too small to get excited about. Long-period groundswell on a reef like this would normally be magic, but without any height, it’s a gamble.

The rest of the month pretty much fizzles out – tiny waves, clean but tiny. From the 18th to the 20th, you’re looking at 0.7 ft to 2 ft. Flat spells are common here, so this blank run is just the way it goes.

So, to sum it up: the best on offer is Thursday the 10th afternoon and Friday the 11th. Clean, offshore winds, north swell around 4 ft to 5 ft, good period, and a reef break that’s consistent. The rest of the window, you might want to save the gas money. Crowds are possible at Mainside, especially when it’s clean and the size is friendly. Keep an eye on that long-range stuff, but don’t bet the farm on it.

Rusty.

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