Marengo Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a look at what’s coming our way.

We’ve got a solid run of surf on the cards, but it’s not all smooth sailing. The first real action kicks off on Monday the 10th, but honestly, the best stuff is a few days out. There’s a few days of wonky winds and messy conditions before we get into the good stuff. The standout window is definitely the middle of the week, with a proper pulse of groundswell and clean offshore winds.

Monday, August 10 starts with a bit of a tease. Marengo is seeing a 6 ft swell from the SW, with a very long period of 19 seconds and light offshore wind. The combined wave energy is moderate (1988). It’s clean, but for experienced surfers only at that size. The morning is your pick, because the afternoon gets roughed up by a strong SW wind that swings cross-off, making it a bit of a mess.

Tuesday, August 11 is a write-off. The wind is up and cross-off, and the swell drops to 4 ft. The energy is moderate but the conditions are just ordinary. Not worth suiting up.

Wednesday, August 12 – now we’re talking. This is the standout. The swell jumps to 13 ft in the morning, building to 15 ft in the afternoon, from the WSW, with a period of 16-17 seconds. The wind is offshore all day, moderate to fresh. The combined wave energy is very strong (11218 to 12607). This is big, powerful, and clean. Only for the experienced crew. The reef and point setup at Marengo will handle this long-period groundswell really well, but it’s going to be a heavy day. This is the one to circle on the calendar.

Thursday, August 13 and Friday, August 14 keep the size up, with 8 ft to 10 ft of SW swell, still with a long period around 16 seconds. Winds remain offshore, keeping the conditions clean. The combined energy is strong (3573 to 5699). This is still excellent for experienced surfers, but a bit more manageable than Wednesday. The whole point and reef should be running.

Saturday, August 15 sees the swell dip to 7 ft, but the wind is lighter and cross-off. The energy is moderate (2048). It’s still clean and fun, but not as powerful as the days before.

Sunday, August 16 through Monday, August 17 – forget it. The wind swings onshore from the east, and the swell drops. The conditions turn poor. This is a dead period.

Tuesday, August 18 offers a little glimmer of hope. The swell is small (4 ft to 4 ft), but the wind is glassy. The combined energy is weak to moderate (857 to 1030). It’s an early morning glass-off for the patient ones. A long-period groundswell (18 seconds) will make for some clean, if small, lines.

After that, the rest of the run into the second week is a bit of a mixed bag. The swell stays small, and the wind is mostly cross or cross-off. There’s a brief window on Friday, August 21 with a 4 ft to 4 ft WSW swell, clean conditions, and moderate energy (806), but nothing that’ll get the heart racing compared to the big Wednesday pulse.

So, the clear winner is Wednesday, August 12 at Marengo. Big, clean, and powerful. If you’re experienced, get on it. The water temp is about average for this time of year.

Rusty.

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