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
Alright, let’s get into it. This is Rusty, looking at what Mother Nature’s got lined up for us here.
Right off the bat, I gotta be straight with you: the first few days are a bit of a write-off. Sunday the 16th and Monday the 17th are pretty marginal, with small, wonky swell and cross-onshore winds messing things up. The water temp is sitting at a warm 85°F, which is pretty average for this time of year, so no surprises there. But honestly, you’re not missing much.
Things start to get a little more interesting from Tuesday the 18th onwards. The swell is building, but the wind stays stubbornly cross or cross-on, keeping the surface choppy. By Wednesday the 19th, we’re looking at a solid 10ft swell from the SSW, and the combined energy is pumping hard at 5298 (strong to very strong wave energy). But the wind is still a problem for perfect conditions. This is serious size though – over 8ft, so it’s expert territory at Kandui Left.
Now, the standout. If you’re looking for a window, it’s Friday the 21st morning. The swell is still a meaty 7ft from the SSW, with a period of 15 seconds – that’s proper groundswell, with long waits between sets but plenty of energy. The wind shifts to cross-offshore from the ESE, and conditions are described as clean. This is the best quality on offer for the whole outlook. The break itself is a fairly consistent reef, and with crowds described as “always”, you’re not going to have it to yourself, but for the wave quality, it’s worth the company.
After that, the swell holds in the 7ft range for a few days, but the wind gets messy again. There’s a brief, intriguing moment on Thursday the 27th morning – the wind goes glassy. Absolutely zero wind. The swell is a clean 6ft from the SSW with a 16-second period. That’s a rare, beautiful moment in this forecast, and the conditions are labelled as excellent for experienced surfers. That could be a magic hour if you can time it right.
The rest of the run into the end of August and the 31st sees the swell slowly dropping off, with more cross-shore breezes and plenty of stormy skies. Nothing to get too excited about. The big energy and the clean windows are few and far between, but for a dedicated surfer, Friday the 21st and that glassy Thursday the 27th morning are the ones to circle.
Stay salty,
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 | 105 | 6 | 6 | 156 | 6 | 6 | 6 | 0 | 6 | 6 | 6 | 105 | 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.











