Surf Forecasts:
Kandui Left surf forecast from 9 Sep 2026:
- Best quality surf: Saturday 12 Sep, 1PM (local time) - 7ft (2.1m), 19s period, SW swell with glassy winds.
- Most powerful swell: Saturday 12 Sep, 10PM (local time) - 8ft (2.4m), 19s period, SW swell with 3,975 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 4AM (local time) - 4ft (1.2m), 21s period with SW 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 (Sep 12) at 4AM. The primary swell is predicted to be 1.2m and 21s period with a secondary swell of 1.4m and 14s. Another secondary swell of 1.1m and 9s is also forecast. 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 2.4m 19s and forecast to arrive on Saturday (Sep 12) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 12th Sep) | 4ft (1.2m) 21s |
| Best Surf | 1PM (Sat 12th Sep) | 7ft (2.1m) 19s |
| Most Powerful | 10PM (Sat 12th Sep) | 8ft (2.4m) 19s |
Table - best surf conditions forecast for Kandui Left over the next 16 days.
The Lowdown
Alright folks, Rusty here, giving you the lowdown for the Mentawai’s premier wave. We’re looking at Kandui Left, and it’s a proper tale of two halves. The first week is a bit of a write-off, with storms and cross/on-shore winds making a mess of things. The water is a warm 84.9°F, which is pretty much bang on average for this time of year, so that’s one less thing to worry about.
The first bit of real hope shows up on Saturday, September 12th. That morning, we get a glassy 5.6ft swell from the SW with a serious 19-second period. That’s a long-period groundswell and it’s packing a punch, with plenty of energy. Glassy conditions mean it will be absolutely clean, but at 5.6ft on a reef, it’s for the experienced crew. The real standout is Saturday afternoon – a dead-calm, glassy 6.9ft SW swell. The energy is massive, and for those who can handle it, this is the session of the month. That same glassy, clean energy pushes through Monday, September 14th morning, with a 6.2ft SW groundswell and light cross-offshore wind. It’s all about those two days.
Then the wind messes it up again mid-week. But hang tight, because Sunday, September 20th morning brings another classic: glassy conditions again, with a clean 6.2ft SW, 16-second swell. The energy is still well up there. Sunday afternoon keeps the clean theme going with a 6.6ft SSW and light cross-offshore wind. That’s your second peak. Monday, September 21st is a dream run with glassy conditions all day and 6.6ft SSW swell, and Tuesday morning is also clean with a 5.2ft swell. For the later part of the outlook, the standout is Wednesday, September 23rd morning – a clean 5.9ft SSW, 16-second swell with cross-offshore wind. That’s your best bet in the second week. It's a long-range promise, but the signs are good.
Crowds are an everyday reality at Kandui Left, so you’ll be sharing the wave, but the quality is worth it. The long period stuff is best on this reef – it’ll bend and hold up perfect.
Short Range ForecastHeavy rain (total 51mm), heaviest during Fri night. Warm (max 28°C on Wed night, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 57mm), heaviest during Sun afternoon. Warm (max 28°C on Mon afternoon, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 | SSW 14 | SSW 16 | SSW 17 | SSW 16 | SSW 15 | SW 15 | SW 21 | SW 19 | SW 19 | SW 18 | SW 17 | SW 16 | SW 15 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1689 | 494 | 1338 | 1657 | 1498 | 1288 | 1059 | 1625 | 2140 | 3072 | 3559 | 3010 | 2742 | 1788 | 1822 | 2007 | 1907 | 1529 | 1358 | 1126 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | glassy | glassy | cross | cross | cross-on | cross-off | cross-off | cross | cross | cross | cross-on | cross-on |
High Tide | 5:22PM0.87m | 5:32AM1.19m | 6:03PM1.00m | 6:14AM1.21m | 6:40PM1.11m | 6:52AM1.18m | 7:16PM1.18m | 7:27AM1.12m | 7:50PM1.21m | 8:01AM1.03m | 8:23PM1.20m | 8:32AM0.93m | 8:55PM1.15m | |||||||
Low Tide | 10:59PM0.18m | 11:56AM0.07m | 11:49PM0.11m | 12:25PM0.03m | 00:33AM0.07m | 12:53PM0.01m | 1:12AM0.05m | 1:20PM0.01m | 1:49AM0.06m | 1:47PM0.02m | 2:25AM0.09m | 2:14PM0.05m | 3:00AM0.15m | |||||||
 |  | | | | | | | |  | | | | | | | | |  |  | |
 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — |
 | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:21 | — | — | 6:21 | — |
mm | 1 | 1 | 3 | 2 | 15 | 7 | 3 | 17 | 2 | — | 14 | 10 | 12 | 9 | 2 | — | 6 | 4 | — | — |
Temp °C | 27 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 28 | 30 | 30 | 30 | 28 | 30 | 30 | 29 | 30 | 32 | 30 | 30 | 30 | 30 | 31 | 31 | 30 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | S 15 | SSW 14 | SSW 16 | SSW 17 | SSW 16 | SSW 15 | SW 15 | SW 14 | SW 19 | SW 19 | SW 18 | SW 17 | SW 16 | SW 15 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 |
| kJ | 1689 | 494 | 1338 | 1657 | 1498 | 1288 | 1059 | 857 | 2140 | 3072 | 3559 | 3010 | 2742 | 1788 | 1822 | 2007 | 1907 | 1529 | 1358 | 1126 |
Swell 2 Height (m) Direction Period (s) | SSE 13 | SSW 18 | W 11 | W 11 | SSW 26 | SW 24 | SW 24 | SW 21 | SSW 14 | SW 14 | — | W 19 | SSE 6 | W 18 | W 17 | — | — | W 16 | W 15 | SSW 21 |
| kJ | 98 | 404 | 2 | 2 | 66 | 347 | 195 | 1625 | 691 | 606 | — | 30 | 71 | 24 | 23 | — | — | 5 | 4 | 45 |
Swell 3 Height (m) Direction Period (s) | W 10 | SW 15 | — | SW 26 | W 10 | W 10 | W 10 | W 24 | — | W 22 | — | W 19 | SSE 8 | — | — | — | — | — | S 24 | W 14 |
| kJ | 2 | 106 | — | 28 | 2 | 2 | 2 | 11 | — | 36 | — | 30 | 14 | — | — | — | — | — | 11 | 4 |
Wind waves Height (m) Direction Period (s) | — | SSE 10 | SSE 11 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 6 | — | SSE 6 | SSE 5 | SSE 6 | SSE 7 | SSE 7 | SSE 6 | SSE 6 |
| kJ | — | 416 | 431 | 320 | 353 | 301 | 253 | 193 | 146 | 143 | 166 | 90 | — | 70 | 56 | 85 | 85 | 70 | 57 | 52 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 487 | 6 | 6 | 387 | 6 | 6 | 322 | 6 | 0 | 0 | 6 | 6 | 6 | 0 | 0 | 6 | 6 | 6 | 387 | 156 |
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.
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