Diamond Street Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get straight into it. The next 16 days are looking like a bit of a mixed bag for Diamond Street. We’ve got some swell on the way, but the wind and consistency are going to be the main talking points, and honestly, you’ll have to pick your windows carefully.

The water temp is sitting about average for this time of year, so nothing out of the ordinary there.

The first real chance to get wet comes on Monday, the 7th of September. We’ve got a 6ft SSW swell pushing in with a 12-second period, so there’s some decent energy there (combined energy of 943). But the wind is a cross-shore breeze at 9 mph, which is going to mess with the surface a bit. It’s a marginal call, and the conditions aren't great. It’s not a total write-off, but you’ll be scratching for a clean one.

Tuesday, the 8th, the swell drops to 3ft. The wind is still cross-shore, and the surf is looking poor. Not worth the paddle. Wednesday, the 9th, the swell dips further to 2ft. The wind does swing onshore from the WSW at 6 mph, which is cleaner, but the wave size is tiny. It’s a marginal day.

Thursday, the 10th, we see a slight bump back up to 3ft from the SW. The period is a very long 16 seconds, which means it’s going to be a groundswell. That’s good for shape, but the cross-onshore wind from the SSW at 9 mph will keep it a bit bumpy. The energy is moderate (526). It’s another marginal one.

From Friday, the 11th, right through to the end of the first week, we’re stuck in a flat spell. The swell sits between 2ft and 3ft, and the wind is mostly cross-onshore or onshore. The surf is consistently rated as poor. Don’t bother.

The second week opens on Monday, the 14th of September. The morning shows a 4ft short-period W swell, but the wind is light and onshore, so it’s still a no-go. The afternoon drops to 2ft with a very long 18-second period, but the energy is weak (321). It’s a marginal day.

Tuesday the 15th and Wednesday the 16th are the same story: tiny waves, poor conditions. Thursday the 17th and Friday the 18th show a slight improvement in swell size, but it’s still marginal. The wind is light and onshore, which is clean, but the waves are small. The energy is climbing a bit, hitting 597 on Friday morning.

The best potential window looks like Saturday, the 19th of September. We’ve got a 3ft SW swell with a long 18-second period. The wind is light and onshore in the morning, and the energy is building (553). The afternoon is a bit choppier with a cross-onshore breeze. It’s a marginal day, but it’s the pick of the bunch.

Sunday, the 20th, and Monday, the 21st, continue the marginal theme. The swell stays around 2ft to 3ft, and the wind is light, so the surface will be okay. The energy is moderate (up to 683 on Monday afternoon). However, the surf is still poor, so it’s a gamble.

Tuesday, the 22nd, is the last day in the window. We’ve got a 3ft SW swell, but the cross-onshore wind will mess it up. It’s another poor day.

The Standout:
If you’re looking for the best of a tough run, point your board at Diamond Street on Saturday, 19th September. The morning is your best bet. You’ll have a 3ft SW groundswell with a long 18-second period, and the wind is light and onshore. It’s not going to be epic, but it’s the cleanest you’ll get. The crowds are *sometimes* an issue here, so you might have company. Keep an eye on the tide.

For the rest of the window, the blank runs are long. The surf is small and the wind is rarely your friend. It’s a stretch of poor quality, which is more normal for this area when the swells are from this direction. Don’t get your hopes up.

Rusty.

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