Surf Forecasts:
Kandui Left surf forecast from 23 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 4AM (local time) - 2.5ft (0.8m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 23 Jul, 10PM (local time) - 7ft (2.2m), 10s period, SSE swell with 980 kJ wave energy.
- Next surfable swell (1★+): Monday 27 Jul, 4AM (local time) - 4ft (1.2m), 10s period with SSE 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 (Jul 27) at 4AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.7m and 13s. 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 2.2m 10s and forecast to arrive on Thursday (Jul 23) 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 (Mon 27th Jul) | 4ft (1.2m) 10s |
| Best Surf | 4AM (Tue 28th Jul) | 2.5ft (0.8m) 16s |
| Most Powerful | 10PM (Thu 23rd Jul) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Kandui Left over the next 16 days.
The Lowdown
Alright crew, Rusty here, talking about what’s coming for Kandui Left in the Mentawais. It’s a tale of two weeks, so let’s break it down.
The water is warm, about 86°F – a touch toastier than average for this time of year.
The first few days are a struggle. We’re looking at chest to head-high swell from the SSE, around 5 to 7 feet, but the wind is cross-shore, putting a chop on the face. The combined energy is moderate (696 to 1048), but the conditions are just messy. No real quality on offer. The wind stays cross, and the swell is inconsistent. You’re better off waiting.
There’s a big gap here with nothing to recommend until the start of August. The swell drops to about 2 feet on the 28th with a 16-second period from the SSW – a beautiful groundswell, but just too small. The energy is low (470). It builds a little towards the end of the month, but it’s still not enough to get stoked about.
Now, the 1st of August is the day. The swell direction locks into the SSW, pushing 6 feet, and the wind is going to glass off. The morning has a light cross-offshore breeze, and by the afternoon it’s glassy. The combined energy is cranking at 1761 – that’s strong. The wave comment calls it “excellent surf conditions for experienced surfers,” and that’s the truth. It’s going to be clean and perfect. The 2nd of August is even better, with glassy conditions, a 5-foot SSW swell, and energy at 1652. This is the best bet. The 3rd of August is also glassy, with a 4-foot swell but a ridiculously long 20-second period groundswell, giving it heaps of energy (1817). That’s a dream for a reef like Kandui.
The 4th of August is a big boy day. The swell jumps to 8 feet on the morning, glassy, with energy hitting 2835. That’s very strong. This is for experts only. The morning window is the one to nail.
The run continues through the 5th, 6th, and 7th with solid 6 to 6-foot SSW swell and clean, glassy, or offshore winds. The 6th of August is a standout with a 6-foot SSW swell, glassy conditions, and a 17-second period – that’s as good as it gets.
Look, crowds are always a factor here, so expect company. But the quality from the 1st through the 7th of August is absolutely firing. The first week is a dud, but the second week is a full-on classic.
Rusty.
Short Range ForecastHeavy rain (total 39mm), heaviest during Sat night. Warm (max 28°C on Thu morning, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 26mm), heaviest during Sun morning. Warm (max 28°C on Sun morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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) | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSW 17 | SSE 10 | SSW 16 | SSW 16 | SW 15 | SSW 15 | SW 14 | SSW 14 | SSW 20 |
Wave Graph  | |||||||||||||||||||||
 kJ | 508 | 754 | 961 | 916 | 788 | 763 | 650 | 603 | 539 | 539 | 442 | 341 | 216 | 260 | 318 | 215 | 229 | 279 | 301 | 268 | 596 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross |
High Tide | 12:56PM0.60m | 2:07AM0.92m | 2:25PM0.55m | 3:13AM0.93m | 3:47PM0.54m | 4:12AM0.96m | 4:49PM0.58m | 5:02AM1.02m | 5:37PM0.63m | 5:44AM1.08m | 6:17PM0.69m | 6:22AM1.13m | 6:52PM0.75m | ||||||||
Low Tide | 6:12PM0.28m | 8:52AM0.43m | 7:08PM0.31m | 10:46AM0.37m | 8:19PM0.32m | 11:29AM0.30m | 9:31PM0.30m | 11:57AM0.24m | 10:31PM0.26m | 12:22PM0.19m | 11:20PM0.21m | 12:48PM0.14m | 00:03AM0.18m | ||||||||
 |  |  | | | | | | | | |  | | | | | | | | |  | |
 | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — |
mm | — | 2 | 1 | 7 | 4 | 2 | 4 | 3 | 16 | 6 | 2 | 2 | 5 | 3 | 7 | — | — | 1 | — | — | — |
Temp °C | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 28 |
Feels °C | 27 | 28 | 29 | 27 | 29 | 28 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 32 | 30 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SW 16 | SW 16 | SW 15 | SW 15 | S 16 | SW 15 | S 15 | SW 14 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 8 | SSW 14 |
| kJ | 140 | 90 | 90 | 54 | 188 | 139 | 209 | 165 | 191 | 539 | 442 | 341 | 216 | 260 | 214 | 186 | 186 | 175 | 143 | 127 | 307 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 11 | SW 13 | S 19 | SSW 18 | SW 15 | S 16 | SW 14 | S 16 | SW 13 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 16 | SSW 16 | SW 15 | SSW 15 | SW 14 | SSW 14 | SSW 20 |
| kJ | 21 | 23 | 45 | 28 | 62 | 145 | 124 | 130 | 20 | 215 | 189 | 175 | 128 | 130 | 318 | 215 | 229 | 279 | 301 | 268 | 596 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 15 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | W 11 | WNW 11 | S 16 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SW 12 | SW 12 | SW 12 | S 16 | S 15 | S 14 | SSE 8 |
| kJ | 27 | 43 | 20 | 10 | 10 | 8 | 8 | 9 | 12 | 19 | 33 | 33 | 195 | 113 | 71 | 69 | 65 | 85 | 115 | 144 | 87 |
Wind waves Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | — | — | — | — | — | — | — | — | — | SSE 8 | — |
| kJ | 508 | 754 | 961 | 916 | 788 | 763 | 650 | 603 | 539 | 408 | — | — | — | — | — | — | — | — | — | 72 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 387 | 6 | 156 | 6 | 6 | 6 | 319 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 2 | 6 | 6 | 6 | 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.
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