Lacerations (Nusa Lembongan) Surf Forecast and Surf Report

G’day, Rusty here. We’ve got a solid run of surf lining up at Lacerations (Nusa Lembongan), and it’s looking like a proper stretch for those who can handle a reef break. This spot is an advanced-only affair, and it’s inconsistent, so when it fires, you want to be on it. The water temp is about average for this time of year, nothing wild there.

The overall pattern is a long, persistent SSW swell, with offshore winds holding for most of the mornings. The combined swell energy is strong to very strong, with values mostly in the 1000 to 4000 range – that’s a lot of power in the water. The swell is coming from the SSW, which matches the optimum direction for this sheltered reef, so the setup is dialled.

Sunday, 2 August kicks things off with a 6 ft SSW swell, pumping at 17 seconds – that’s a long-period groundswell, meaning better shaped waves and more energy. The wind is light offshore from the ESE at 6 mph, glassy clean. Combined energy is 1759 – strong. This is a standout: clean, consistent in power, and perfect for experienced crew. The afternoon holds with a moderate offshore breeze, still clean.

Monday, 3 August and Tuesday, 4 August see the swell drop a touch to 5 ft and 5 ft, but the period stays long (14–15 seconds) and the wind remains offshore, light to gentle. Good, clean surf, but not as punchy as Sunday.

Wednesday, 5 August is a bit of a mixed bag – morning has some clouds and a moderate offshore breeze, swell 5 ft, energy a bit lower at 977 (moderate). The afternoon improves with a cleaner 4 ft and 15-second period, energy back up to 1308.

Thursday, 6 August is another standout. The swell jumps to 6 ft, 17-second period, and the energy hits 2159 – strong. Offshore wind at 12 mph, moderate but clean. This is excellent for experienced surfers.

Friday, 7 August is the biggest of the first week. Morning shows 7 ft, 17-second groundswell, energy at 3040 – very strong. Offshore wind, clean. This is borderline for experts only, as it’s over 8 ft? No, it’s 7 ft, so still in the expert zone but not too big. The afternoon gets a cross-off wind, so it’s still clean but not as perfectly offshore.

Saturday, 8 August stays solid with a 7 ft swell, 16-second period, energy 2573. Morning offshore, clean.

Sunday, 9 August has 7 ft swell with rain showers in the morning, but still offshore and clean. Energy 1982 – strong.

Monday, 10 August brings a shift: the swell drops to 5 ft but the period stretches to 18 seconds – very long period. This kind of groundswell can be a bit straight at beach breaks, but Lacerations is a reef, so it’ll handle it well. Morning is gentle offshore and clean. The afternoon gets a bigger 8 ft swell with cross-off wind, energy 3589, but the wind is cross-off, so it’s clean but not perfect.

Tuesday, 11 August is the biggest swell of the entire outlook: 10 ft in the morning, 16-second period, energy 4003 – very strong. This is well over 8 ft, so experts only. The wind is cross-off from the SSE at 9 mph, so it’s clean but not offshore. The afternoon drops to 8 ft, still clean.

Wednesday, 12 August through Saturday, 15 August sees a mix of 6 ft to 7 ft swells, with periods mostly 14–16 seconds, and offshore winds in the mornings. The energy stays strong, between 1130 and 2147. The afternoons often have cross-off winds, keeping it clean but not as glassy.

Sunday, 16 August and Monday, 17 August wind down: 5 ft to 5 ft, periods dropping to 14–15 seconds, energy falling to 873. The morning offshore wind holds, but the afternoons are cross-off and marginal.

Best on offer? Sunday 2 August morning for the cleanest, glassy start with a solid 6 ft, 17-second groundswell, and Friday 7 August morning for the biggest, cleanest swell of the first week. The Thursday 6 August morning is also a ripper. For the second week, Tuesday 11 August morning is huge but only for the brave, and Monday 10 August morning has that very long 18-second period on a clean reef – that’s a special wave.

Remember, this reef is inconsistent, so these windows are gold. The crowd situation at Lacerations is often busy, so expect company. Get in early.

Rusty.

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