Mahomets Back Beach Surf Forecast and Surf Report

G’day, Rusty here. Let’s get straight into it. We’ve got a serious run of southwest groundswell hitting Mahomets, but this stretch is not for the faint-hearted. The first proper window of quality surf opens this Wednesday morning, 5 August, and it sets the pace for the next couple of weeks—plenty of size, some clean windows, and a few days that are going to be too big for most.

Right off the bat, Wednesday morning sees a clean 6.9ft SW groundswell rolling in with a 16-second period, and that long-period energy is cranking. The wind is light and cross-offshore out of the southeast at 6 mph, making it glassy and lined up. Combined energy is sitting at 2160, which is solid. This is the pick of the first few days for the experienced crew—water temp is 66.7°, which is a bit colder than usual for this time of year, so don’t be shy with the rubber. It’s a Wednesday, so crowds are only sometimes an issue, but with conditions this clean, you might see a few more out than usual. Wednesday afternoon, the wind swings a touch more southerly and it gets cross-on, bumping it up a bit—still ridable but not the same sparkle.

Thursday morning, 6 August, the swell jumps to 9.8ft with the same long 16-second period. That’s pushing well past the comfort zone for beginners, and honestly, it’s getting into expert-only territory. The wind is light and straight onshore from the southwest at 3 mph, so it’s clean, but this is a beast. Isolated waves are going to be well overhead. Thursday afternoon drops to 8.2ft but the wind picks up and goes cross-onshore, so it’s messy. Friday holds around 8.2ft but the wind goes cross-shore and bumpy, so it’s not doing it any favours. Friday afternoon sees some rain and 12 mph onshore wind—just ugly.

Saturday, 8 August, is a write-off. Strong southerly winds at 25 mph in the morning, 19 mph in the afternoon, with the swell holding at 9.8ft to 11.5ft. The combined energy jumps to over 6000, which is strong, but it’s all chop and lump. This is not a surfing day; this is a day to watch the ocean from the car. The setup here is more interesting for kite surfing than paddle surfing, if you’re into that.

Now, here’s where it gets interesting. Sunday morning, 9 August, the swell peaks at a solid 13.1ft with an 18-second period. That’s a big, powerful groundswell, and the combined energy is massive at 9085. The wind is dead calm—glassy. But look, this wave is going to be double overhead plus. It’s clean, but it’s for experts only, and for a beach break, a period that long can mean it breaks a bit too straight. If you’re not charging, Sunday is a day to just watch the sets roll through. Sunday afternoon eases to 11.5ft with a light onshore breeze, still heavy.

Monday, 10 August, brings rain and strong winds—poor conditions. Swell sits around 8.2ft to 9.8ft but it’s just sloppy. Tuesday, 11 August, has a window in the morning: 11.5ft SW swell, 16 seconds, and a light cross-shore wind from the southeast. It’s still big, but that gentle cross-shore keeps some order to it. Tuesday afternoon, though, the wind builds and it gets chopped out.

We get another clean-ish morning on Wednesday, 12 August, with 9.8ft of SW swell and a light cross-offshore easterly breeze at 12 mph. It’s powerful, still in the "only for pros" range, but the surface is clean. Thursday, 13 August, is similar—9.8ft, 17-second period, light easterly cross-off in the morning. Clean, but big. Friday, 14 August, is the standout of the second week. The swell drops slightly to 8.2ft but holds that long 17-second period, and we get a proper offshore wind out of the northeast at 6 mph in the morning. Clean, lined-up, powerful. This is a proper session if you’ve got the skills. The energy is still strong at 3683, but it’s manageable. Friday afternoon gets cross-onshore and chopped.

The weekend after that, 15 and 16 August, sees the swell back off to under 6.6ft, with cross-shore and cross-onshore winds. It’s not doing much—you

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