Sponge bay Surf Forecast and Surf Report

Rusty here, same forecast, now in feet and Fahrenheit.

Sponge Bay wakes up with something worth paddling for on Friday, July 3rd – a nice steady run of clean waves for the beginner or longboard crowd. Swell runs 4 to 5 ft from the east with a 12-second interval, real groundswell energy in the water (combined energy around 592 to 641). Wind is light and cross-off all day, so the surface is smooth. It’s not gonna blow your mind, but for a beach and reef setup, this is about as fun and mellow as it gets. Water temp is about normal for the time of year, nothing unusual.

Saturday the 4th is more of the same – east swell 4 ft, a bit shorter period at 11 seconds, still with a gentle cross-off that keeps things clean. Combined energy drops to 347 to 453, but still enough to push you along. Sunday the 5th and Monday the 6th are smaller, with 3 to 4 ft swell and period down to 9 or 10 seconds, but winds stay light and offshore or cross-off. You can get a wave, but it’s pretty ordinary.

Tuesday the 7th is a wash. Morning is glassy but the swell is weak and the energy is marginal. By afternoon the wind goes onshore and it’s messy. Skip it.

Now, Wednesday the 8th is the first real highlight – but only in the morning. Swell jumps to 7 ft from the ESE at 10 seconds, combined energy 1068. That’s proper power. The wind is glassy, dead calm, from the WSW. From dawn to lunch, experienced surfers are gonna have a ball. It’s a little raw with that period, but glassy conditions on a beach and reef setup mean some clean, punchy walls. Crowds are sometimes a factor, but at that size, most beginners will stay out. Afternoon is ruined by onshore wind, so get it while it’s good.

From Thursday the 9th through Sunday the 12th, strong southerly winds blow – 25 to 28 mph – and it’s onshore or cross-onshore the whole time. Swell sticks around 5 to 10 ft, but the wind destroys the surface. This is kite-surfing weather, not paddle surfing. The energy numbers are high, especially on the 10th (2196), but the quality is zero.

Monday the 13th and Tuesday the 14th settle down. A clean little window with east swell around 4 to 5 ft, period 10 to 11 seconds, and light cross-off winds. Combined energy is moderate at 446 to 551. Good for a cruise, nothing heavy.

Then the big one: Wednesday, July 15th. This is the best day across the whole outlook. Swell hits 7 to 7 ft from the ESE and SE, with a very long period of 15 to 16 seconds. That’s deep ocean energy, combined at 2068 to 2232. Winds are light and cross-off in the morning, gentle cross-off in the afternoon. This swell will produce long, lined-up waves – though at a beach break, it might run a bit straight, so pick your bank. This is for experienced surfers only; 7 ft with that period moves a lot of water. Crowds are possible, but the quality will be worth it.

Thursday the 16th is for experts only. Morning sees a massive 10 ft swell from the ESE at 14 seconds, light cross-off wind, combined energy 2992 – but the swell is simply too big for this break and will be dangerous or closing out. Afternoon drops to 8 ft, still big, but wind goes glassy from the NNE. That window could be special for a handful of locals.

Friday the 17th holds size, 8 to 8 ft with a 12-second period, combined energy around 2829 to 2932. Clean in the morning with light offshore wind, but afternoon gets a moderate cross-shore breeze that messes it up. Saturday the 18th is a total loss with 28 mph south winds and cross-on slop.

So, circling back: Wednesday morning July 8th for a glassy, punchy mid-size session, and Wednesday July 15th for the long-period groundswell of the month. Beginners, hit that first weekend in July. Experts, lock in the 15th – but keep an eye on the wind as it gets closer.

Rusty.

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