Keaulanas Surf Forecast and Surf Report

Howdy, Rusty here. We’ve got a pretty mellow run of swell coming into Keaulanas, a beach and reef setup. Water temp’s sitting at 81°, which is dead average for this time of year, so nothing to write home about.

The action starts Friday morning, September 11. Clean 2ft SW groundswell with a long 16-second period. Cross-off breeze from the east at 6 mph keeps it tidy. Combined energy’s moderate at 287, so nothing thumping, but it’ll be fun. That same setup rolls through Saturday morning, with the swell easing and the wind going glassy by Saturday afternoon – surf drops to 2ft but that glassy surface will be a treat.

Sunday the 13th sees the swell drop further to 1-2ft. Conditions stay glassy in the morning but energy’s fading – only 144 to 121 for combined swell energy. Surfable for a longboard or foiler, but no push.

Monday the 14th, wind goes offshore from the ENE at 6 mph, with a tiny 1ft swell. Not firing, but that offshore breeze is gold. Monday afternoon gets interesting: wind picks up to 12 mph offshore, and we get a pulse of 2ft swell with a massive 22-second period – combined energy jumps to 298. That’s very clean, but with that super long period, it might stand up straight on a beach break. Keaulanas being reef, it should handle it.

The standout window is Tuesday morning, September 15. Swell builds to 3ft from the SSW, period at 20 seconds, combined energy hits 531 – solid. Offshore wind at 6 mph. This is your best bet: clean, decent push for an intermediate surfer, and those long gaps between sets mean easy paddling. Crowds can show up sometimes, but on a Tuesday you might have it to yourself.

Wednesday the 16th through Friday the 18th, swell stays around 3ft to 3ft, but wind cranks up to 15-18 mph offshore. Clean but fresh – combined energy in the 500-600 range. More for the fit local.

From Saturday the 19th through Monday the 21st, swell drops to 2-3ft, cross-off winds at 12-15 mph. Energy fades from 500 down to 220. Ordinary surf.

Tuesday the 22nd is a low point: swell drops to 2ft, combined energy a weak 82. A bit of offshore wind in the afternoon but not worth it.

Then Wednesday the 23rd brings a nice rebound: 2ft SW groundswell, 17-second period, gentle offshore wind at 9 mph. Combined energy 358. Clean and fun.

Thursday the 24th gets messy: cross-onshore wind from the SSE, swell jumps to 3ft but period drops. Energy is strong at 647 but conditions are blown out. That afternoon gets worse with a 4ft confused NNW swell and onshore wind – skip it.

Now here’s the real standout: Friday the 25th. Morning’s still average, but the afternoon goes completely glassy – zero wind – with a 3ft SSW groundswell and 14-second period. Combined energy hits 723, strong. That’s clean, glassy, and punchy. Best session of the run.

Saturday the 26th wraps up with a 2ft SW swell, cross-off breeze, and nice energy at 414 to 507. Glassy spells in the afternoon. Good way to finish.

Rusty.

Read more