
Surf Forecasts:
Kandui Left surf forecast from 12 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 10PM (local time) - 8ft (2.4m), 19s period, SW swell with 3,975 kJ wave energy.
Best Forecast Surf Conditions for Kandui Left this week:
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-onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| 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. Let's have a look at what's cookin' for the next couple of weeks.
We've got a solid window of decent swell on the horizon, but it's a mixed bag with the wind. The early part of the run is a bit touch and go, but there are some real gems tucked in there, especially for the experienced crew.
The day kicks off, Saturday morning, 12th September, and it's already looking promising. Kandui Left is sending through a clean 6ft SW groundswell with a long 19-second period, and a light ESE cross-offshore breeze. The combined energy is pumping at a solid 2980 – that's strong stuff. Water temp's sitting at 85°, which is pretty average for this time of year. For a reef break, that's a beautiful setup, but at this size and with that power, it's definitely one for the intermediates and above. Crowds are always an issue here, so expect company.
The next few days get a bit messy. We see the swell size bump up over the weekend and into Monday, but the wind swings cross and cross-onshore, plus we get some rain and thunderstorms in the mix. The quality drops right off. We're looking at a bit of a dry spell for clean conditions from Saturday afternoon all the way through to the end of the following week.
Now, let's jump ahead to Friday morning, 19th September. This is a real standout. The sea lays down again. A clean 4ft SW groundswell with an impressive 18-second period, light cross-offshore from the ESE, and the combined energy is still a strong 1690. It's glassy, it's clean, and it's perfect for getting some long, drawn-out lines on that left. This is a serious highlight for the more experienced surfer.
The pattern continues into the next week. Monday morning, 21st September, brings more of the same goodness: 6ft SSW swell, 14-second period, a light 6 mph ESE cross-off, and a combined energy of 1422. Clean as a whistle.
Then, Tuesday morning, 22nd September, we get a total glass-off with zero wind. The swell drops a touch to 5ft from the S with a 13-second period, but the calm conditions will make it feel like butter. This is the pick of the bunch for the dedicated crew who don't mind a slightly smaller wave in perfect conditions.
And just when you think it's over, Wednesday morning and afternoon, 23rd September, deliver again. Glassy conditions with a nice 6ft SSW swell in the morning (combined energy 2102) and then 6ft SSW in the afternoon (combined energy 1732). Absolutely pristine conditions at Kandui Left.
There's another window to watch late in the run. Friday morning, 25th September, a very long-period 20-second SSW groundswell rolls in at 5ft, with a light cross-off. The combined energy jumps right up to 3452, which is very strong. This is a solid, powerful groundswell. That super long period will mean long waits between sets, but the waves that come through will be big, strong, and perfect for that reef. This one's for experts only.
Saturday morning, 26th September, the swell is still up, getting to 8ft from the SSW, but the wind is a bit more side-shore, so it won't be as clean as the Friday morning session. Still, at that size and with 17-second period, it's a serious ocean out there.
Overall, we've got a proper run of surf. The absolute standouts are the Tuesday morning, 22nd September, for the glass-off perfection, and the Friday morning, 25th September, for the sheer power and size of that swell. Get out there if you're experienced and hungry.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Sat night. Warm (max 28°C on Sat afternoon, min 27°C on Sat afternoon). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Tue night. Warm (max 28°C on Tue afternoon, min 26°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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) | SW 19 | SW 18 | SW 17 | SW 16 | SW 15 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 |
Wave Graph | ||||||||||||||||||||
3072 | 3559 | 3010 | 2742 | 1788 | 1822 | 2007 | 1907 | 1529 | 1358 | 1126 | 1072 | 1191 | 1114 | 1356 | 710 | 1257 | 829 | 701 | 672 | |
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 | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on |
High Tide | 7:16PM1.18m | 7:27AM1.12m | 7:50PM1.21m | 8:01AM1.03m | 8:23PM1.20m | 8:32AM0.93m | 8:55PM1.15m | 9:01AM0.82m | 9:28PM1.07m | 9:26AM0.72m | 10:03PM0.98m | 9:46AM0.62m | 10:47PM0.89m | |||||||
Low Tide | 1:12AM0.05m | 1:20PM0.01m | 1:49AM0.06m | 1:47PM0.02m | 2:25AM0.09m | 2:14PM0.05m | 3:00AM0.15m | 2:42PM0.09m | 3:36AM0.22m | 3:11PM0.15m | 4:17AM0.29m | 3:44PM0.22m | ||||||||
— | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:22 | — | — | 6:21 | — | — | 6:21 | — | — | 6:21 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | |
mm | — | 10 | 8 | 1 | — | — | — | 3 | 1 | — | 7 | 6 | 1 | — | — | 1 | — | — | — | 22 |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 28 | 27 | 27 |
Feels °C | 31 | 28 | 30 | 30 | 28 | 30 | 31 | 30 | 29 | 30 | 28 | 27 | 27 | 28 | 28 | 28 | 27 | 29 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 19 | SW 18 | SW 17 | SW 16 | SW 15 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 |
3072 | 3559 | 3010 | 2742 | 1788 | 1822 | 2007 | 1907 | 1529 | 1358 | 1126 | 1072 | 1191 | 1114 | 1356 | 710 | 1257 | 829 | 701 | 672 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | — | W 19 | — | WSW 18 | W 17 | SSE 8 | SSE 8 | SSE 7 | W 10 | SSW 21 | SW 19 | SW 19 | SW 18 | WNW 11 | SSW 16 | W 9 | SSE 7 | W 9 | SW 18 |
606 | — | 30 | — | 30 | 23 | 128 | 99 | 78 | 2 | 45 | 133 | 133 | 375 | 37 | 458 | 43 | 86 | 43 | 327 | |
Swell 3 Height (m) Direction Period (s) | W 22 | — | W 19 | — | — | — | — | — | W 15 | W 15 | W 9 | W 8 | W 8 | W 8 | W 14 | W 10 | SW 21 | W 9 | SW 20 | WNW 8 |
36 | — | 30 | — | — | — | — | — | 5 | 4 | 2 | 1 | 1 | 5 | 4 | 51 | 18 | 42 | 97 | 24 | |
Wind waves Height (m) Direction Period (s) | SSE 9 | SSE 5 | SSE 6 | SSE 6 | SSE 5 | SSE 7 | — | — | — | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | SSE 6 | SSE 7 | — | SSE 7 | SSE 7 |
119 | 48 | 104 | 110 | 77 | 148 | — | — | — | 73 | 67 | 184 | 145 | 123 | 97 | 94 | 105 | — | 86 | 69 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 6 | 6 | 6 | 387 | 6 | 6 | 6 | 0 | 0 | 6 | 156 | 6 | 319 | 6 | 6 | 387 | 6 | 6 | 322 |
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.










