Wanjapu Surf Break

Lat Long: 9.65° S 119.02° E

Wanjapu Surf Forecast and Surf Report

Issued: 1 am 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Wanjapu sea temperature is
25.9° C
0.2° 

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


Wanjapu surf forecast from 6 Aug 2026:

  • Best quality surf: Friday 7 Aug, 8PM (local time) - 8ft (2.5m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Monday 10 Aug, 11PM (local time) - 8ft (2.5m), 18s period, SSW swell with 4,525 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 5PM (local time) - 7ft (2.2m), 17s period with SW swell.

Best Forecast Surf Conditions for Wanjapu this week:

The surf forecast for Wanjapu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 06) at 5PM. The primary swell is predicted to be 2.2m and 17s period with a secondary swell of 1.0m and 6s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Wanjapu in the next 16 days are 2.5m 18s and forecast to arrive on Monday (Aug 10) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Thursday (Aug 06) at 11PM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Thu 6th Aug)7ft (2.2m) 17s
Best Surf 8PM (Fri 7th Aug)8ft (2.5m) 16s
Most Powerful11PM (Mon 10th Aug)8ft (2.5m) 18s

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


The Lowdown

G’day, Rusty here.

We’ve got a solid stretch of SSW groundswell lining up for Wanjapu over the next couple of weeks. This is a consistent, exposed reef break that handles a south-west swell direction beautifully, so it’s going to see plenty of action. The water is sitting right on average for this time of year at 79°, nothing unusual there.

The surf kicks off Thursday morning, August 6, with a clean 7ft SSW swell carrying a long 18-second period. Wind is light and cross-onshore from the SSE at 6 mph, so it’s a little bumpy, but the energy is pumping with combined energy of 2672 (moderate). Things clean up nicely that afternoon with a cross-off breeze from the ESE at 9 mph and the swell nudging 7ft, period still a long 17 seconds – that’s your best bet for Thursday: clean, powerful lines on the reef.

Friday, August 7, sees the swell build a touch to 8ft through the afternoon, period dropping slightly to 16 seconds. Mornings are cross-on again with that light SSE breeze, and afternoons have a gentle cross-shore chop from the SE. Not as clean as Thursday afternoon, but plenty of grunt coming in – combined energy hits 3245 on Friday arvo. The pattern holds through Saturday and Sunday, with 7ft to 8ft SSW swell, but those cross-shore winds keep conditions a bit rumpled. Still, the reef is handling it, and for an advanced crew, there’s plenty to work with.

Now, the standout – and I’m calling it – is Monday, August 10, early morning. The wind swings to a light offshore from the SW at just 3 mph, glassing up the 6ft SSW swell. Period drops to 15 seconds but the energy is still solid at 2789. That offshore, near-glassy window is rare in this forecast, and for a couple of hours, Wanjapu will be clean and lined up. It’s a short window, so be on it.

The following Thursday morning, August 13, is also worth a look – 7ft SSW swell, 17-second period, and light SSE cross-on wind at 6 mph. Not glassy, but the long period and moderate energy (2833) mean the reef will be working consistently.

From the 15th onward, we’re in a bit of a lull. Swells drop to 5ft–7ft through the weekend, and winds stay cross-shore side. A gap of a few quiet days in the middle of the second week, but keep an eye on Wednesday, August 19, when a new SSW pulse pushes back in with 8ft swell, 16-second period, and combined energy of 3957. Winds are light cross-on that morning, so it’s promising.

The real long-range gem is Thursday, August 20 – glassy early with a light SSW breeze and a clean 8ft SSW swell, 16-second period. That’s a top-notch morning for experienced surfers. And then Friday, August 21, the swell jumps to 10ft with an 18-second period and combined energy of 6268 – very strong, but wind is offshore from the SW at 3 mph. That’s going to be a heavy, powerful day on the reef, and only for those who know what they’re doing. It’s two weeks out, so take it as a promising prospect, not a sure thing.

All in all, the best on offer? Thursday afternoon, August 6, for that clean, long-period window, and Monday morning, August 10, for a rare glassy offshore session. The big stuff on the 20th and 21st could be epic if the forecast holds.

Stay sharp, Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Thu morning, min 23°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Sun morning, min 23°C on Sun night). Wind will be generally light.

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
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)
2
4
4
2
4
5
4
2
2
3
3
4
3
2
4
2
3
2
3
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
SSW
18
2.2
SW
17
2.1
SW
16
2.3
SSW
16
2.5
SSW
16
2.5
SW
16
2.5
SSW
16
2.4
SSW
16
2.2
SSW
16
2.3
SSW
16
2.2
SSW
16
2.1
SSW
15
1.9
SSW
15
2.5
SSW
18
2.5
SSW
17
2.5
SSW
17
2.4
SSW
16
2.3
SSW
16
2.1
SSW
17
1.9
SSW
16
1.3
SSW
17
Wave Graph
Metric surfscale
Energy kJ
2672
2652
2146
2869
3217
3319
3062
2900
2472
2518
2300
1821
1488
3990
4423
3955
2786
2550
2643
1811
859
Wind (km/h)
10
SSE
15
ESE
10
E
10
SSE
15
SE
10
ESE
10
SSE
20
SSE
25
SE
15
SE
15
SE
15
ESE
5
SW
20
SSE
15
SE
15
SSE
20
SSE
20
SE
15
SE
15
SE
10
ESE
Wind State
cross-on
cross-off
cross-off
cross-on
cross
cross-off
cross-on
cross
cross
cross
cross
cross-off
on
cross-on
cross
cross-on
cross
cross
cross
cross
cross-off
High Tide
2:38PM2.00m
2:59AM2.58m
3:35PM1.72m
3:56AM2.45m
5:28PM1.51m
5:27AM2.35m
8:08PM1.58m
7:16AM2.41m
9:21PM1.83m
8:37AM2.59m
10:03PM2.10m
9:36AM2.79m
10:39PM2.37m
Low Tide
8:52AM0.69m
8:26PM0.81m
9:51AM0.81m
9:01PM1.02m
11:22AM0.90m
9:58PM1.24m
1:29PM0.82m
00:15AM1.38m
2:52PM0.59m
2:20AM1.24m
3:43PM0.35m
3:28AM0.99m
4:23PM0.17m
4:18AM0.72m
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:00
6:00
6:00
6:00
6:01
6:01
 mm
Temp °C
26
26
25
26
26
25
25
25
25
26
25
25
25
25
24
25
25
24
25
25
24
Feels °C
27
27
26
27
27
27
27
26
25
27
26
25
27
25
24
25
24
23
25
26
24
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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 Wanjapu Surf forecast

The above surf forecast table for Wanjapu provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Wanjapu can be found by selecting the local surf guide option on the grey menu. Our Wanjapu 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 (Wanjapu) 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 Wanjapu 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.

Wanjapu is 24 km (15 miles) from the city of Adalara. If you plan a holiday in Sumba, look for hotels and other accommodation in Adalara. Adalara has rooms for a wide range of budgets as well as car hire and transport links.

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