Surf Forecasts:
Kandui Left surf forecast from 16 Aug 2026:
- Best quality surf: Monday 17 Aug, 7AM (local time) - 4.5ft (1.4m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,593 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 7AM (local time) - 4.5ft (1.4m), 14s period with SSW swell.
Best Forecast Surf Conditions for Kandui Left this week:
The surf forecast for Kandui Left over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 7AM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 0.4m and 24s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kandui Left in the next 16 days are 3.0m 17s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 5s period and expected on Saturday (Aug 22) at 10PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 17th Aug) | 4.5ft (1.4m) 14s |
| Best Surf | 7AM (Mon 17th Aug) | 4.5ft (1.4m) 14s |
| Most Powerful | 7PM (Wed 19th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Kandui Left over the next 16 days.
The Lowdown
G’day, it’s Rusty. Kandui Left is the only break on the radar for the next 16 days, but don’t get too excited – it’s more of a waiting game than a full-on swell window. This famous reef setup is a consistent performer, but right now, the conditions are a mixed bag of cross-shore winds and questionable tide windows, meaning most of the coming days are marginal at best. The main issue is that the wind rarely plays nice, and there’s a lot of choppy, lumpy texture mixed in, even when the swell is solid.
Starting off this Sunday, August 16, we’ve got a 5ft SSW groundswell at 15 seconds, but it’s coming in with a cross-onshore breeze from the south at 9 mph, so it’s fairly choppy. The water is sitting at 85°F, which is about 1°F warmer than the long-term average – nothing unusual, just typical tropical warmth. The surf is marginal, and I wouldn’t clear the schedule for it.
The first real standout doesn’t show up until Wednesday, August 27. That morning, we’ve got a 5ft SW groundswell with a 16-second period, and the wind swings light easterly at 3 mph, going cross-offshore. That’s glassy, clean conditions on a reef that loves this kind of long-period energy. The combined swell energy is moderate (1251), and it’s rated as excellent for experienced surfers. This is your best bet in the whole run – head there early.
Another promising day is Sunday, August 30, with a 6ft SW groundswell at 16 seconds in the morning. The wind is light from the southeast at 6 mph, cross-offshore, and it’s clean again. The swell energy is climbing (1994), and it’s another excellent session for those who know what they’re doing.
Then Monday, August 31, caps off the window with a 8ft SW groundswell at 16 seconds and a light east-northeast breeze at 6 mph, also cross-offshore. The combined energy jumps to 4401, which is strong, and the conditions are clean. This one’s for the experienced crew only – that 8ft on a reef will be pumping.
Overall, the first 10 days are pretty average with nothing to write home about. The wind is mostly cross or cross-onshore, and the swell is often messy. But from August 27 onward, the mornings clean up nicely with light offshore breezes and solid SW groundswells. The crowds at Kandui Left are always a factor, but for those few windows, it’s worth the company.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sun morning. Warm (max 28°C on Sun morning, min 27°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Wed morning. Warm (max 28°C on Wed morning, min 27°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | S 15 | S 15 | SSW 14 | SSW 14 | SSW 14 | SW 21 | SSW 16 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
Wave Graph | |||||||||||||||||||||
993 | 435 | 508 | 651 | 519 | 898 | 2787 | 2189 | 5273 | 5250 | 5331 | 5029 | 4086 | 3378 | 2486 | 2007 | 1716 | 3339 | 2696 | 2482 | 1690 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross | cross-on | cross |
High Tide | 9:00PM1.12m | 9:05AM1.03m | 9:38PM1.10m | 9:38AM0.90m | 10:17PM1.05m | 10:09AM0.77m | 11:00PM0.97m | 10:39AM0.65m | 11:55PM0.90m | 11:18AM0.55m | 1:13AM0.85m | 1:48PM0.49m | 2:42AM0.85m | ||||||||
Low Tide | 2:31PM0.02m | 2:50AM0.13m | 2:59PM0.05m | 3:30AM0.20m | 3:27PM0.10m | 4:11AM0.27m | 3:57PM0.15m | 4:57AM0.34m | 4:30PM0.22m | 5:56AM0.41m | 5:11PM0.28m | 7:35AM0.45m | 6:09PM0.34m | ||||||||
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
— | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:27 | — | — | 6:27 | — | |
mm | 4 | 1 | 2 | — | — | — | 3 | — | 1 | 2 | 2 | 3 | — | — | — | — | — | — | — | — | 2 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 29 | 30 | 30 | 30 | 29 | 30 | 30 | 28 | 31 | 30 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 10 | SSW 14 | SSW 14 | SSW 14 | S 13 | SSW 16 | SSW 16 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
993 | 183 | 508 | 651 | 519 | 600 | 2787 | 1397 | 5273 | 5250 | 5331 | 5029 | 4086 | 3378 | 2486 | 2007 | 1716 | 3339 | 2696 | 2482 | 1690 | |
Swell 2 Height (m) Direction Period (s) | SW 15 | S 15 | SSE 9 | SW 24 | SSW 19 | SSW 18 | WNW 8 | SSW 19 | W 10 | W 10 | WNW 10 | WNW 10 | WNW 10 | WNW 11 | SSW 22 | SSW 19 | SSW 18 | WNW 10 | WNW 10 | WNW 9 | SSW 18 |
266 | 435 | 126 | 142 | 214 | 705 | 13 | 2189 | 8 | 8 | 10 | 20 | 20 | 22 | 91 | 1129 | 1497 | 9 | 9 | 7 | 112 | |
Swell 3 Height (m) Direction Period (s) | WNW 9 | SW 15 | WNW 9 | SSW 19 | SW 24 | SW 21 | WNW 8 | WNW 8 | W 10 | — | — | — | — | — | WNW 10 | WNW 11 | WNW 11 | W 16 | W 16 | W 9 | SSW 24 |
17 | 212 | 15 | 72 | 142 | 898 | 7 | 14 | 2 | — | — | — | — | — | 22 | 22 | 22 | 5 | 5 | 6 | 54 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSE 4 | SSE 4 | — | SSE 10 | SSE 9 | SW 8 | SW 10 | SW 10 | SSW 10 | SW 10 | W 11 | SSE 5 | — | — | — | SSE 5 | S 6 | — |
— | — | — | 9 | 12 | — | 98 | 119 | 23 | 48 | 51 | 41 | 26 | 57 | 24 | — | — | — | 42 | 21 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 105 | 6 | 6 | 156 | 156 | 156 | 6 | 6 | 6 | 6 | 6 | 6 | 487 | 6 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Kandui Left Surf forecast
The above surf forecast table for Kandui Left provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kandui Left can be found by selecting the local surf guide option on the grey menu. Our Kandui Left 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 (Kandui Left) 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 Kandui Left 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.











