Kandui Left Surf Break

Lat Long: 1.90° S 99.29° E

Kandui Left Surf Forecast and Surf Report

Issued: 6 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kandui Left sea temperature is
29.6°C
0.8° 

Kandui Left surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Kandui Left surf forecast from 6 Sep 2026:

  • Best quality surf: Saturday 12 Sep, 1AM (local time) - 4.5ft (1.3m), 21s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 13 Sep, 1AM (local time) - 7.5ft (2.3m), 18s period, SW swell with 3,158 kJ wave energy.
  • Next surfable swell (1★+): Saturday 12 Sep, 1AM (local time) - 4.5ft (1.3m), 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 1AM. The primary swell is predicted to be 1.3m and 21s period with a secondary swell of 1.4m and 14s. 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 2.3m 18s and forecast to arrive on Sunday (Sep 13) at 1AM. 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 Wednesday (Sep 09) at 10PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Sat 12th Sep)4.5ft (1.3m) 21s
Best Surf 1AM (Sat 12th Sep)4.5ft (1.3m) 21s
Most Powerful 1AM (Sun 13th Sep)7.5ft (2.3m) 18s

Table - best surf conditions forecast for Kandui Left over the next 16 days.


The Lowdown

Alright, Rusty here. Let's talk about the Mentawais, and more specifically, Kandui Left.

This is a classic reef setup, and it’s exposed to any swell heading its way. Over the next 16 days, we’ve got a solid run of SW groundswell, but the wind is going to be the main character in this story. For the first week or so, a persistent SSE breeze is going to keep things pretty messy. The water is sitting at a warm 85°, which is spot on for this time of year, so you won't be needing a wetsuit.

We start off slow. Sunday the 6th and Monday the 7th are a write-off. The wind is howling from the SSE at 16 to 19 mph, either cross or cross-on, and the waves are a chop-fest. You’ll see some swell there, 4 ft to 5 ft, but it’s not worth paddling out for. The combined energy is moderate, but it’s all wind-slapped.

The middle of the week, from Tuesday the 8th through Friday the 11th, is a tease. The swell ticks up a bit, with the 9th seeing a 7 ft SSW groundswell, but that SSE wind just won't quit. It’s cross-on or cross-off, and the word "choppy" keeps popping up. It’s marginal at best. You might get a few, but it’ll be a battle.

Now, the first real standout comes on Saturday the 12th. The morning is looking magic. The wind finally drops and swings ESE, giving us a clean, cross-off breeze. The swell is a solid 5 ft from the SW, with a long 19 second period. That’s a proper groundswell. The combined energy is strong, and the report says "excellent surf conditions for experienced surfers." This is your window. It won’t be a beginner wave at that size, and because it’s a reef, those long-period sets will be lining up perfectly. It’s a point break, so the long period is a bonus, not a curse. Expect crowds, as this spot is always busy.

Sunday the 13th is still game-on, but the wind shifts back onshore, making it messier. 7 ft to 8 ft SW swell, but the quality drops.

The next real highlight is a full week away, on Wednesday the 16th of September. The morning is glassy. Zero wind. The swell is 6 ft from the SSW, with a 14-second period. The energy is solid, and the conditions are described as "excellent." That glassy, clean surface on a reef like Kandui Left is about as good as it gets. The afternoon is glassy again. This is a standout session for the smooth, clean lines.

The 17th and 18th continue the trend of cleaner winds, but the swell drops a bit. On Friday the 18th, we get another clean, offshore morning with a 5 ft SSW swell, and a 14-second period. The afternoon sees the swell period stretch back to 19 seconds, with a 4 ft SSW swell and clean conditions. The energy is moderate, but the quality is high.

The final weekend, the 19th and 20th, sees a pulse of bigger swell, 7 ft to 8 ft, but the SE wind comes back, putting a cross-chop on the face. It’s big, but it’s not clean. The energy is strong, but it’s not the best session.

So, to sum it up: the absolute best on offer is Saturday the 12th morning for the clean, cross-off wind and long-period groundswell, and Wednesday the 16th for the totally glassy, clean conditions. Get on those.

- Rusty

Short Range Forecast

Light rain (total 3mm), mostly falling on Mon morning. Warm (max 28°C on Sun morning, min 27°C on Sun morning). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 39mm), heaviest during Fri night. Warm (max 28°C on Wed morning, min 25°C on Fri night). Wind will be generally light.

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
2
1
0
2
2
1
1
2
0
2
2
1
2
0
1
4
4
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SSW
16
0.8
S
18
1.2
SSW
15
1.3
SSW
14
1.1
SSW
14
1.7
SSE
9
1.3
SSW
18
1.5
SSW
17
1.7
SSW
16
2.1
S
15
2
S
15
1.2
SSW
14
1.6
SSW
16
1.7
SSW
17
1.7
SSW
16
1.7
SSW
15
1.6
SW
15
1.3
SW
21
1.6
SW
19
1.9
SW
19
2.3
SW
18
Wave Graph
Metric surfscale
Energy kJ
1016
399
627
660
415
456
1110
1282
1466
1959
1709
577
1338
1657
1498
1271
1059
1473
1801
2695
3158
Wind (km/h)
25
SSE
30
SSE
20
SE
30
SE
25
SSE
20
SSE
15
SE
20
SSE
25
SSE
20
SSE
20
SSE
20
SSE
15
SE
20
SSE
20
SSE
20
SSE
20
S
5
ENE
10
ESE
10
SSE
20
SSE
Wind State
cross-on
cross
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross-on
cross-on
glassy
cross-off
cross-on
cross-on
High Tide
1:44PM0.54m
2:31AM1.01m
3:31PM0.61m
3:47AM1.07m
4:35PM0.73m
4:45AM1.15m
5:22PM0.87m
5:32AM1.19m
6:03PM1.00m
6:14AM1.21m
6:40PM1.11m
6:52AM1.18m
7:16PM1.18m
Low Tide
6:36PM0.30m
9:44AM0.29m
8:24PM0.31m
10:43AM0.21m
9:54PM0.26m
11:23AM0.13m
10:59PM0.18m
11:56AM0.07m
11:49PM0.11m
12:25PM0.03m
00:33AM0.07m
12:53PM0.01m
1:12AM0.05m
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thunderstorm
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thunderstorm
clear
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:18
6:18
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:22
6:22
6:22
6:22
6:22
6:22
 mm
2
1
2
1
5
4
8
5
4
10
1
3
21
Temp °C
28
28
27
28
27
27
27
28
27
28
28
28
27
27
27
27
27
27
27
27
27
Feels °C
28
28
27
28
26
27
29
30
28
29
29
29
29
28
28
28
28
30
30
29
28
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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