Costa Nova Surf Forecast and Surf Report

Alright folks, Rusty here. Let's have a look at what’s on the menu at Costa Nova over the next couple of weeks. We’ve got a bit of a slow start, but there are some promising pulses of energy further out if you can wait.

The first few days are pretty chill. Sunday morning (13th September) offers a clean 4ft NW swell with a nice 12-second period. The water is sitting at 64°, which is a touch colder than usual for this time of year. With light ESE offshore winds, it’s glassy and clean, and the combined energy is a moderate 486. It’s surfable, but not a standout.

We hit a bit of a flat spot from Sunday afternoon through Tuesday, with onshore winds and choppy conditions making things messy. Tuesday morning has tiny 2ft waves – really not worth paddling out for.

Then things start to build. Wednesday morning (16th September) brings a solid 8ft NW swell, but it’s cross-shore with a 16 mph wind, and the 8-second period is short and choppy. The energy is strong at 1548, but it’s more of a windy mess than proper surf. This continues into Thursday and Friday with big, cross-shore slop.

The real standout is Saturday morning, 19th September. This is the one to circle on the calendar. We’ve got a 8ft NW groundswell with a very long 14-second period and offshore easterly winds at just 3 mph. It’s clean, it’s powerful, and the combined energy is pumping at 2004. This one’s for experienced surfers only – that size and power is too much for beginners. The long period means it might wall up a bit, but with clean conditions, Costa Nova should be offering some memorable waves.

Sunday morning (20th September) keeps the energy going with a 5ft NW swell, clean cross-offshore winds, and moderate energy of 618. It’s a great follow-up session for those who missed the Saturday peak.

We then see a few more days of solid, glassy conditions. Tuesday morning (22nd September) is another beauty with 6ft NW swell, 12-second period, and glassy conditions under a light southerly breeze. The energy is strong at 1042, and conditions are excellent for experienced surfers.

Wednesday morning (23rd September) offers a clean 5ft NNW swell with zero wind – dead glassy. It’s a lovely, accessible size for intermediates too, with moderate energy of 649.

The final week tails off. By Thursday and Friday (24th and 25th September), we’re back to tiny, weak waves and onshore winds. Saturday (26th) has a tiny bump of long-period energy, but it’s not really enough to get excited about. There is another pulse building into the 27th and 28th with 5ft to 6ft NW swells and glassy conditions on Monday morning (28th September), which could be worth a look for those willing to wait it out.

Bottom line: the peak of this outlook is the Saturday, 19th September morning session. Big, clean NW groundswell with offshore winds. If you’re an experienced surfer, that’s your window. The following Tuesday and Wednesday mornings are also excellent for cleaner, slightly smaller waves.

Stay safe, and keep an eye on the horizon.

Rusty

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