Sponge bay Surf Forecast and Surf Report

Righto, let’s get into it. Rusty here, lookin’ at what’s on the table for Sponge Bay. This stretch is a beach-and-reef setup, fairly exposed, so it catches most of what’s thrown at it. The water temp’s sittin’ around 56° right now, which is about average for this time of year—nothin’ wild, just normal springtime cool.

The outlook starts off pretty flat for a few days. The first bit of Saturday the 5th and Sunday the 6th, the swell’s tiny and the wind is cross-off, but there’s just no push to get excited about. A total non-starter.

Then Monday the 7th, there’s only a tiny 0.7 ft SSE swell with offshore wind, but it’s barely a ripple—more like a lake than surf. That’s a gap of a couple days of nothin’.

Tuesday the 8th, we see a big jump in size, but it’s a mess. A 10 ft SSW swell rolls in, but with onshore and cross-on winds, it’s just blown-out, choppy slop. The wave energy is strong (1744), but it’s not for paddlin’—if you’ve got a kite, maybe, but for a surfboard? No thanks.

Wednesday the 9th, things calm down a little. We get a 4 ft SE swell with a glassy morning—wind’s nuthin’ (NNW 12 mph). That’s a clean window, but the swell’s short-period (8 seconds), so the waves are weak and crumbly. The energy’s moderate (170), but it’s a bit ordinary. Still, you could get a few soft ones if you’re keen.

Thursday the 10th and Friday the 11th stay mediocre: smaller swells, cross-off and cross winds, nothin’ to write home about. A bit of chop on Friday afternoon, but the swell picks up to 8 ft from the SSW with moderate energy (1942). It’s got length, but the wind is cross, so it’s lumpy.

Now, here’s where it gets interesting. Saturday the 12th morning—that’s a standout, but only for experts. You’ve got a 10 ft SSW swell with a fresh cross-shore wind (WSW 19 mph). The combined energy is strong (1877). The finder says it’s too big for this break, and I’d agree. That’s a heavy, lumpy, powerful wave—only for the crew who knows what they’re doing. Not a beginner’s session.

Sunday the 13th brings a massive, long-period groundswell: 8 ft SSE at 16 seconds. That’s a proper deep-ocean pulse. The energy is very strong (2696). Morning wind is light and cross (W 6 mph), so it’ll be lined up, but the period is so long it might just race straight through the beach break—better for a point or reef, but Sponge Bay is beach-and-reef, so it could offer some clean, powerful walls if the tide’s right. That’s arguably the best of the whole window: clean, strong, and solid.

Monday the 14th keeps the theme, with a 8 ft SSE swell at 14 seconds and offshore wind (NW 12 mph). Clean, powerful, but again, big and long-period—only for experienced surfers. Energy is high (2491). This is a run of quality waves, but they’re big.

The rest of the week tapers off. Tuesday the 15th, Wednesday the 16th, and Thursday the 17th see the swell drop to more manageable sizes—5 ft down to 2 ft—with a mix of glassy and clean conditions. Not huge, but if you’re after a mellow, clean session, Wednesday morning the 16th with 4 ft SSE and clean cross-off wind is a solid option. Not a standout, just a nice, tidy surf.

Friday the 18th is a write-off: onshore wind, lumpy, and weak.

Then, a late-bloomer: Saturday the 19th. Morning is dead flat calm, glassy, with a 4 ft SSE swell at 11 seconds. That’s a clean, fun-sized wave for the weekend warriors. The wind is zero, the energy is moderate (411), and it’s got a nice period. That’s a sweet little dawny for the early birds.

Sunday the 20th, closing out the forecast, we’re back to proper heavy stuff: 10 ft SSW in the morning, 15 ft S in the afternoon at 14 seconds. That’s huge energy (15396) and a monster swell—way too big for this break, and only for the most hardcore chargers. Kiteboarders would love it.

Best overall: Sunday the 13th and Monday the 14th deliver the goods if you can handle the size and long period. For the average surfer, Saturday the 19th morning is the pick—clean, calm, and just fun.

Rusty.

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