
Surf Forecasts:
Kandui Left surf forecast from 10 Aug 2026:
- Best quality surf: Sunday 16 Aug, 7AM (local time) - 5.5ft (1.7m), 16s period, S swell with glassy winds.
- Most powerful swell: Tuesday 11 Aug, 1PM (local time) - 8ft (2.5m), 19s period, S swell with 4,755 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 7AM (local time) - 5.5ft (1.7m), 16s 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 Sunday (Aug 16) at 7AM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 0.7m and 15s. 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 2.5m 19s and forecast to arrive on Tuesday (Aug 11) at 1PM. 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 15) at 4PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sun 16th Aug) | 5.5ft (1.7m) 16s |
| Best Surf | 7AM (Sun 16th Aug) | 5.5ft (1.7m) 16s |
| Most Powerful | 1PM (Tue 11th Aug) | 8ft (2.5m) 19s |
Table - best surf conditions forecast for Kandui Left over the next 16 days.
The Lowdown
Alright, let’s break it down. The swell’s been pumping but the wind’s been a real pain for a stretch, so a lot of the first week is a total scrub unless you’re in a tough mood. The real treasure is sitting in the second week.
Kandui Left. Classic reef break, fairly consistent, but the first week is mostly onshore and cross-shore breezes trashing the surface. Water temp is a warm 85°, which is dead average for the season, so nothing wild there.
Monday the 10th and Tuesday the 11th are a bust for a decent session. Swell is there – 6ft to 8ft, mostly from the S and SSW, with a long 14- to 20-second period – but the wind is cross-on or cross, gusting 9-12 mph, keeping things choppy. The energy is huge though; combined swell energy numbers like 2816 and 4696, so there’s tons of power, but it’s just not linking up clean.
Wednesday the 12th through Saturday the 15th is more of the same: 5ft to 8ft of S/SSW swell, mostly 13-16 second period, but those cross and cross-on winds won’t quit. Crowds are inevitable – Kandui Left is always packed – and for no good reason with the chop. The energy stays moderate to strong (1720 to 3162), so it feels punchy, but the surface is messy.
Now, look to Monday the 17th. That morning, the wind finally swings light offshore from the ENE, and we get clean 4ft SSW swell at 14 seconds. Not huge, but the quality will shine. The combined energy is 881 – moderate – and the crowd will be thick as always, but at least you’ll get some lined-up rides without the chop.
The standout is Tuesday the 18th. Glassy as glass in the morning with a 7ft SSW groundswell at 17 seconds, combined energy of 2641. That’s the kind of day you call in for. The reef will amplify those long-period waves, giving long, powerful walls. Afternoon stays clean with a cross-off breeze and 6ft at 19 seconds. Best session of the whole run by far.
Wednesday the 19th sees the swell jump to a solid 10ft from the SSW at 18 seconds, combined energy of 4957. That’s expert-only territory – way too big and heavy for beginners. The wind is offshore in the morning, so it will be big, clean, and heavy. Afternoon goes cross-shore, so the early session is the one.
The 20th and 21st fall back to 7ft-8ft, but the wind goes cross to cross-on again, so you’re back to battling the chop. The 23rd picks up again with 6ft to 7ft, period stretching back to 18-19 seconds, combined energy of 3289, but again, cross-onshore winds ruin the party.
So bottom line – the first week is a bust unless you enjoy fighting onshore slop. The clear winner is Tuesday the 18th, with Monday the 17th morning and Wednesday the 19th morning as solid second best. Big swell, clean conditions, and that long period groundswell will have Kandui Left absolutely cranking.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Warm (max 28°C on Mon morning, min 27°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 32mm), heaviest during Sat night. Warm (max 28°C on Thu morning, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | SSW 14 | S 20 | S 18 | S 17 | S 17 | S 16 | S 16 | S 16 | S 16 | S 14 | S 18 | S 17 | S 16 | S 15 | S 14 | S 13 | S 13 | S 16 | S 15 | S 15 | SSW 14 |
Wave Graph | |||||||||||||||||||||
1363 | 2207 | 2890 | 3678 | 3683 | 2537 | 2413 | 2151 | 1953 | 1431 | 1946 | 2316 | 3059 | 2460 | 1626 | 1144 | 976 | 1591 | 1070 | 842 | 834 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 4:36PM0.65m | 4:54AM1.21m | 5:32PM0.75m | 5:46AM1.27m | 6:20PM0.86m | 6:32AM1.31m | 7:03PM0.97m | 7:14AM1.30m | 7:43PM1.05m | 7:53AM1.24m | 8:22PM1.11m | 8:30AM1.15m | 9:00PM1.12m | ||||||||
Low Tide | 10:51AM0.21m | 9:43PM0.20m | 11:42AM0.12m | 10:52PM0.15m | 12:22PM0.05m | 11:50PM0.09m | 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 | |||||||
6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | |
— | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:28 | — | — | 6:28 | — | |
mm | — | — | — | — | — | 1 | — | — | 3 | — | — | 2 | — | 1 | 3 | 3 | 3 | 20 | 5 | 5 | 23 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 27 | 27 | 27 | 26 |
Feels °C | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 31 | 31 | 31 | 30 | 30 | 30 | 29 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 14 | S 18 | S 17 | S 17 | S 16 | S 16 | S 16 | S 16 | S 14 | S 11 | S 17 | S 16 | S 15 | S 14 | S 13 | S 13 | S 16 | S 15 | S 15 | SSW 14 |
1363 | 1097 | 2890 | 3678 | 3683 | 2537 | 2413 | 2151 | 1953 | 1431 | 676 | 2316 | 3059 | 2460 | 1626 | 1144 | 976 | 1591 | 1070 | 842 | 834 | |
Swell 2 Height (m) Direction Period (s) | S 21 | S 20 | S 13 | SSW 19 | WNW 8 | SW 18 | WNW 9 | S 21 | S 20 | S 18 | S 18 | S 11 | SSW 22 | SSW 19 | SW 16 | SSW 17 | S 16 | SW 16 | SW 16 | SW 15 | WNW 9 |
1085 | 2207 | 799 | 1004 | 14 | 455 | 8 | 79 | 276 | 784 | 1946 | 449 | 91 | 251 | 203 | 516 | 438 | 295 | 239 | 212 | 16 | |
Swell 3 Height (m) Direction Period (s) | SSW 24 | SSW 23 | SW 21 | WNW 8 | WNW 8 | WNW 8 | W 20 | WNW 9 | WNW 10 | WNW 10 | SW 15 | WNW 11 | WNW 11 | WNW 11 | SSW 19 | S 18 | SW 16 | WNW 10 | WNW 10 | WNW 9 | SW 26 |
368 | 207 | 467 | 14 | 14 | 7 | 7 | 7 | 9 | 9 | 54 | 11 | 12 | 12 | 292 | 231 | 306 | 10 | 9 | 17 | 26 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 4 | ESE 5 | — | ESE 5 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 29 | 9 | — | 4 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 156 | 6 | 6 | 6 | 9 | 9 | 156 | 9 | 10 | 9 | 105 | 9 | 9 | 6 | 6 | 6 | 105 | 6 | 6 | 6 | 9 |
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.











