Lacerations (Nusa Lembongan) Surf Forecast and Surf Report

G’day, Rusty here, and I’ve got the lowdown on Lacerations (Nusa Lembongan) for the next sixteen days. This is a reef set-up that’s advanced-only, and it’s inconsistent, so when it’s on, it’s special, but it does take patience. The water temp is sitting at 27°, which is pretty much spot on average for this time of year, so no surprises there.

The overall pattern is a slow build of energy, starting with a fairly average period, then some real promise later. The combined swell energy is moderate to strong, with values mostly in the 1000s and 2000s, peaking nicely (3222) late in the run.

We kick off Sunday 6th September with some rain showers and a cross-off SSE wind at 15 km/h. The swell is 6 ft from the SSW, period 14 seconds, but the energy is just 1515 – it’s pretty marginal. The conditions are clean, but the wave comment notes it’s questionable, so it’s not the time to get excited. Monday the 7th stays similar, 6 ft in the morning, still cross-off, still a bit meh.

Tuesday the 8th starts to wake up. The morning offers 4 ft swell but with a long period of 19 seconds – that’s proper groundswell energy, coming in at 2397. The wind is a gentle cross-off, and the wave comment says excellent for experienced surfers. This is a standout for the first week. That long period will make the reef lines stand up nicely, but it can be a bit tricky at the take-off.

Wednesday the 9th is another good one. The morning sees 8 ft from the SSW (16 seconds, 2588 energy) with a southerly cross-off at 15 km/h. The afternoon eases to 7 ft, wind drops to 10 km/h – still cross-off, still clean. Excellent conditions for the experienced crew.

Thursday 10th offers 5 ft to 6 ft, still clean, still good energy (1605 to 1928). Friday 11th sees the wind turn offshore in the morning – 15 km/h from the SE with 6 ft SSW swell at 16 seconds. That’s clean, offshore, and the wave comment says very good. A solid session.

From Saturday 12th through to Monday 14th, the swell drops a touch (4 ft to 5 ft) but the wind is mostly offshore, so it’s clean and fun. The energy stays in the 1000s, so it’s not weak, just not pumping.

Now, the real standout comes later. Saturday 19th September into Sunday 20th September. Saturday morning delivers 8 ft from the SSW (16 seconds, 3048 energy) and the afternoon holds 8 ft (3176). Sunday the 20th sees 8 ft (3222 energy) – the strongest swell of the whole window. The wind is cross-off, the conditions are clean, and the wave comment says excellent for experienced surfers. This is a big, powerful swell, and at over 8 ft, it’s for experts only. The sets will be heavy on that reef.

Monday 21st eases back to 6 ft with offshore wind in the morning – a nice way to finish the run.

So, the best on offer? Tuesday 8th September for the long-period groundswell and clean conditions, and then the true standout is the weekend of 19th–20th September – that’s a solid, powerful swell with serious energy. It’s a big week for the advanced crew.

Rusty.

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