Surf Forecasts:
Lacerations (Nusa Lembongan) surf forecast from 29 Aug 2026:
- Best quality surf: Monday 31 Aug, 8AM (local time) - 3.5ft (1.0m), 19s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 2PM (local time) - 5.5ft (1.7m), 17s period, SW swell with 1,737 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 8AM (local time) - 4.5ft (1.3m), 13s period with SSW swell.
Best Forecast Surf Conditions for Lacerations (Nusa Lembongan) this week:
The surf forecast for Lacerations (Nusa Lembongan) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 30) at 8AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.7m and 5s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Lacerations (Nusa Lembongan) in the next 16 days are 1.7m 17s and forecast to arrive on Tuesday (Sep 01) at 2PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Thursday (Sep 03) at 2AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 30th Aug) | 4.5ft (1.3m) 13s |
| Best Surf | 8AM (Mon 31st Aug) | 3.5ft (1.0m) 19s |
| Most Powerful | 2PM (Tue 1st Sep) | 5.5ft (1.7m) 17s |
Table - best surf conditions forecast for Lacerations (Nusa Lembongan) over the next 16 days.
The Lowdown
Alright, Rusty here, and I’ve got the only spot worth talking about for this stretch. Let’s break it down.
We’re looking at a solid run at Lacerations (Nusa Lembongan) , kicking off on Sunday, August 30th and running all the way to Monday, September 14th. This is a shallow reef break, strictly for advanced crew. The water temp is nothing out of the ordinary for the season.
Sunday, August 30th starts us off clean. Offshore breeze from the ESE, swell from the SSW at 4ft, with a 13-second period, combined energy of 754 (moderate). Gentle but clean all day.
Monday, August 31st gets better. Still offshore from the SE. Morning brings 4ft of SW swell, but look at that period—18 seconds! Energy at 974 (moderate). By the afternoon, it’s 5ft from the SSW with that same long 18-second period, energy jumping to 1325 (strong). That’s a proper groundswell, perfect for this reef.
Tuesday, September 1st is a standout. Morning offshore, 6ft from the SSW, still 18 seconds, energy at 1682 (very strong). This is building into something special. The afternoon goes cross-off but stays clean, with 6ft from the SW at 17 seconds.
Wednesday, September 2nd keeps the quality. Offshore morning, 5ft from the SW, 16-second period, energy at 1436 (strong). Good shape, good power. Afternoon goes cross-off.
Thursday, September 3rd backs off a touch. Offshore in the morning with 4ft from the SW, 16 seconds, energy 794 (moderate). Fun but not a standout.
Friday, September 4th and Saturday, September 5th see a dip. Cross-off wind, smaller swell, shorter period. Clean but weaker. A bit of a flat spell.
Sunday, September 6th picks back up. Clear, cross-off wind, 6ft from the SSW in the morning, energy 1792 (very strong). Afternoon has 5ft from the SSW, energy 1809 (very strong). Big, powerful sets, but that cross-off breeze stops it from being perfect.
Monday, September 7th still pumps. 6ft from the SSW in the morning, period 14 seconds, energy 1435 (strong). Clean but cross-off.
Tuesday, September 8th afternoon is massive. 7ft from the SSW, 18-second period, and energy hits 2919 (very strong). That’s a serious, very long-period groundswell. Once you get over 8ft, it's expert-only. The cross-off keeps it clean, but this is raw power.
Wednesday, September 9th morning is the absolute best of the whole run. Offshore wind, 7ft from the SSW, 17-second period, energy 2795 (very strong). Clean, powerful, and lined up perfectly on the reef. Again, expert territory, but off the charts.
Thursday, September 10th morning stays good with offshore wind, 6ft from the SSW, 15-second period, energy 1432 (strong). Still pumping.
From Friday, September 11th onward, it settles. Sizes drop to 4ft to 5ft, periods around 14-16 seconds, energy in the moderate 700-900 range. Cross-off wind keeps it clean, but the fire is gone.
The clear winner is Wednesday, September 9th morning at Lacerations. If you can handle the size and the reef, that is your session. Tuesday afternoon and Monday morning are also top-tier. The rest of the time offers plenty of clean, fun waves for the skilled crowd.
-Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Sun morning, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Wed morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 19 | SW 18 | SSW 18 | SSW 18 | SSW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 536 | 528 | 578 | 752 | 1159 | 1431 | 1682 | 1599 | 1524 | 1436 | 1256 | 989 | 793 | 605 | 536 | 469 | 530 | 561 | 791 | 553 | 1374 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | cross-off | off | off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:29AM1.95m | 11:57PM1.95m | 12:01PM1.86m | 00:19AM2.02m | 12:34PM1.72m | 00:45AM2.06m | 1:09PM1.55m | 1:13AM2.05m | 1:47PM1.34m | 1:47AM2.00m | 2:34PM1.13m | 2:30AM1.90m | 4:18PM0.94m | 3:36AM1.77m | |||||||
Low Tide | 5:46PM0.27m | 6:05AM0.39m | 6:08PM0.34m | 6:41AM0.35m | 6:29PM0.43m | 7:19AM0.35m | 6:50PM0.54m | 8:04AM0.40m | 7:10PM0.65m | 8:59AM0.50m | 7:25PM0.77m | 10:24AM0.60m | 7:17PM0.90m | ||||||||
 | |  |  | | | | | | | | | | | | | | | | | | |
 | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 29 | 27 | 27 | 27 | 28 | 27 | 25 | 27 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 12 | SW 18 | SSW 18 | SSW 18 | SSW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 |
| kJ | 536 | 528 | 309 | 752 | 1159 | 1431 | 1682 | 1599 | 1524 | 1436 | 1256 | 989 | 793 | 605 | 536 | 469 | 530 | 561 | 791 | 553 | 1374 |
Swell 2 Height (m) Direction Period (s) | SE 6 | SSW 21 | SSW 19 | SSW 12 | SSW 11 | SSW 11 | NE 6 | NE 7 | NE 7 | NE 7 | NE 7 | ENE 7 | NE 6 | NE 6 | S 18 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 16 | SSW 18 |
| kJ | 30 | 256 | 578 | 222 | 166 | 107 | 7 | 8 | 8 | 7 | 7 | 5 | 2 | 2 | 6 | 4 | 12 | 12 | 10 | 512 | 123 |
Swell 3 Height (m) Direction Period (s) | SSW 21 | NE 7 | SE 6 | NE 7 | NE 7 | NE 7 | — | — | — | — | — | — | S 8 | — | — | NE 6 | NE 6 | NE 6 | — | — | — |
| kJ | 180 | 8 | 20 | 7 | 8 | 7 | — | — | — | — | — | — | 1 | — | — | 2 | 2 | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | ESE 6 | SE 5 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 |
| kJ | 61 | 33 | 41 | 38 | 50 | 84 | 54 | 87 | 120 | 62 | 69 | 103 | 38 | 57 | 56 | 50 | 40 | 31 | 24 | 24 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
Best forecast wave conditions in Nusa Lembongan - Bali | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Lacerations (Nusa Lembongan) Surf forecast
The above surf forecast table for Lacerations (Nusa Lembongan) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Lacerations (Nusa Lembongan) can be found by selecting the local surf guide option on the grey menu. Our Lacerations (Nusa Lembongan) surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Lacerations (Nusa Lembongan)) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Lacerations (Nusa Lembongan) may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Lacerations (Nusa Lembongan) is 16 km (10 miles) from the city of Klungkung. If you plan a holiday in Nusa Lembongan - Bali, look for hotels and other accommodation in Klungkung. Klungkung has rooms for a wide range of budgets as well as car hire and transport links.
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