Surf Forecasts:
Kandui Left surf forecast from 13 Aug 2026:
- Best quality surf: Saturday 15 Aug, 1AM (local time) - 6ft (1.9m), 14s period, S swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 10ft (3.0m), 18s period, SSW swell with 5,074 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 1AM (local time) - 6ft (1.9m), 14s period with S 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 Saturday (Aug 15) at 1AM. The primary swell is predicted to be 1.9m and 14s period with a secondary swell of 0.6m and 16s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kandui Left in the next 16 days are 3.0m 18s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 15th Aug) | 6ft (1.9m) 14s |
| Best Surf | 1AM (Sat 15th Aug) | 6ft (1.9m) 14s |
| Most Powerful | 4PM (Wed 19th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Kandui Left over the next 16 days.
The Lowdown
G’day, it’s Rusty here.
Honestly, the next couple of weeks at Kandui Left are a mixed bag, and I’m not going to sugar-coat it. The swell is there at times, but the wind and conditions are going to be the story. We’re looking at a lot of lumpy, cross-shore slop before things clean up a touch, but even then, it’s not going to be all-time perfection. The water temp is sitting at 85° with an anomaly of 1°, so pretty much average for this time of year, nothing wild to report there.
Let’s get into it. The first real window with any kind of pulse is Friday the 14th. Thursday is a write-off with moderate cross-shore winds and a messy 6ft S swell, the energy is strong at 2098 but the quality is terrible. Friday morning sees the swell bump to 8ft from the south at 16 seconds, with a light cross-shore breeze. It’s still not clean, the energy is strong at 3570, but it’s a step in the right direction. The afternoon drops a touch, but the breeze stays light.
Saturday the 15th is the standout of the first week. The morning is glassy. Zilch wind. That’s huge. The swell drops slightly to a clean 6ft from the south at 14 seconds, and the energy is moderate at 1780. This is your window to get some proper lined-up reef waves. This is a reef break, and a long-period south swell like this is right in its wheelhouse. It’s a fairly consistent setup, so you won’t be waiting forever between sets. Crowds are always a factor here, but for this kind of quality, it’s worth the battle. After that, the conditions get sloppy again with cross-onshore winds kicking up.
The following week is a write-off until Tuesday the 18th. The wind stays cross-shore, the swell pulse is inconsistent. Tuesday afternoon, the energy jumps significantly to 3701 with a 6ft SSW swell at a long 19 seconds. It’s a proper groundswell, but the wind is still light cross. Not perfect, but there’s serious power.
Wednesday the 19th, the swell kicks up a notch. Morning sees 8ft at 18 seconds, and the afternoon pushes to 10ft with the energy at a massive 5124. That’s strong, very strong energy. But this is reef, and once it’s over 8ft, it’s expert-only territory. This is big, powerful, and heavy. With the cross-onshore breeze, it’s going to be a battle. This is not for the faint-hearted. If you’re an expert, this could be a serious session, but for everyone else, stay well clear.
There’s another push around Saturday the 22nd, back up to 8ft, but the wind is moderate cross-shore again, which will chop it up. Then the swell backs off into the last week. The 26th sees a pulse back to 6ft and 7ft with a bit more period (17 seconds), but the wind is still cross and cross-on, so it's more of the same lumpy conditions.
Look, the honest truth is, this isn't a classic, perfect 16-day run. The standout is Saturday the 15th for the crowd of average to good surfers – glassy and clean with a solid 6ft south swell. For the experts, Wednesday the 19th offers a serious, powerful slab, but you’ll be earning it. Beyond that, it’s about picking the moments and dealing with the cross-shore wind. There are a few days with no real hope of a clean wave, like the 24th and 25th, so be patient. The forecast further out is promising but less certain, so keep an eye on it.
Rusty, out.
Short Range ForecastHeavy rain (total 59mm), heaviest during Sat morning. Warm (max 28°C on Thu morning, min 24°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Sun night. Warm (max 28°C on Mon morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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 14 | S 18 | S 17 | S 16 | S 15 | S 14 | S 14 | S 13 | S 15 | S 15 | S 15 | SSW 14 | SSW 14 | SSW 14 | SW 21 | SSW 16 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 17 |
Wave Graph | |||||||||||||||||||||
1303 | 1925 | 2316 | 3059 | 2460 | 1468 | 1033 | 757 | 1190 | 865 | 711 | 724 | 651 | 580 | 898 | 2787 | 2067 | 4941 | 4473 | 5074 | 4592 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | glassy | glassy | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross |
High Tide | 7:03PM0.97m | 7:14AM1.30m | 7:43PM1.05m | 7:53AM1.24m | 8:22PM1.11m | 8:30AM1.15m | 9:00PM1.12m | 9:05AM1.03m | 9:38PM1.10m | 9:38AM0.90m | 10:17PM1.05m | 10:09AM0.77m | 11:00PM0.97m | ||||||||
Low Tide | 12:58PM0.01m | 00:40AM0.06m | 1:31PM-0.01m | 1:26AM0.06m | 2:01PM-0.01m | 2:09AM0.08m | 2:31PM0.02m | 2:50AM0.13m | 2:59PM0.05m | 3:30AM0.20m | 3:27PM0.10m | 4:11AM0.27m | 3:57PM0.15m | ||||||||
6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
— | 6:29 | — | — | 6:29 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | |
mm | — | 1 | 12 | 3 | 7 | 22 | 8 | — | 6 | 3 | 2 | 5 | 3 | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 27 | 27 | 26 | 25 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 30 | 30 | 29 | 30 | 30 | 29 | 28 | 30 | 30 | 30 | 29 | 30 | 29 | 30 | 28 | 32 | 31 | 29 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 18 | S 17 | S 16 | S 15 | S 14 | S 14 | S 13 | S 15 | S 15 | S 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 16 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 17 |
1303 | 1925 | 2316 | 3059 | 2460 | 1468 | 1033 | 757 | 1190 | 865 | 711 | 724 | 651 | 580 | 531 | 2787 | 1613 | 4941 | 4473 | 5074 | 4592 | |
Swell 2 Height (m) Direction Period (s) | S 18 | S 12 | WNW 11 | SSW 22 | SSW 20 | SW 16 | SSW 17 | S 16 | SW 16 | SW 15 | SW 15 | WNW 8 | SW 24 | SSW 19 | SSW 18 | WNW 8 | SSW 19 | SSE 8 | WSW 10 | WNW 10 | WNW 11 |
784 | 675 | 12 | 91 | 239 | 203 | 516 | 438 | 295 | 269 | 212 | 14 | 142 | 214 | 705 | 14 | 2067 | 39 | 34 | 10 | 22 | |
Swell 3 Height (m) Direction Period (s) | WNW 10 | SW 15 | SSW 23 | WNW 11 | WNW 11 | SSW 20 | S 18 | SW 16 | WNW 10 | WNW 9 | WNW 9 | SW 26 | SSW 19 | SW 24 | SW 21 | SSE 10 | W 8 | W 8 | — | — | — |
11 | 54 | 53 | 12 | 12 | 298 | 231 | 302 | 19 | 17 | 16 | 26 | 72 | 142 | 898 | 31 | 21 | 11 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | S 11 | SSE 11 | — | — | — | — | — | — | — | — | SSE 3 | SSE 4 | SSE 4 | SSE 4 | — | — | SW 10 | SW 11 | SSW 11 |
— | — | 441 | 408 | — | — | — | — | — | — | — | — | 4 | 10 | 11 | 11 | — | — | 26 | 40 | 45 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 156 | 105 | 9 | 9 | 6 | 0 | 0 | 6 | 6 | 6 | 6 | 9 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 387 | 6 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
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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.











