Wanjapu Surf Break

Lat Long: 9.65° S 119.02° E

Wanjapu Surf Forecast and Surf Report

Issued: 1 pm 13 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 13 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 5AM (local time) - 7ft (2.2m), 19s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 20 Aug, 5AM (local time) - 10ft (3.0m), 17s period, SW swell with 4,891 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 11PM (local time) - 6ft (1.8m), 16s period with SSW 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 13) at 11PM. The primary swell is predicted to be 1.8m and 16s period with a secondary swell of 0.7m and 9s. 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 3.0m 17s and forecast to arrive on Thursday (Aug 20) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Sunday (Aug 16) at 11PM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 13th Aug)6ft (1.8m) 16s
Best Surf 5AM (Wed 19th Aug)7ft (2.2m) 19s
Most Powerful 5AM (Thu 20th Aug)10ft (3.0m) 17s

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


The Lowdown

G’day, I’m Rusty. Let’s take a look at what’s coming for Wanjapu over the next couple of weeks. This is a reef break, wide open to the SW, and the best swell direction is SW – that’s the key. Water temp is around 79°, about average for this time of year, so nothing out of the ordinary.

We’re in a quiet spell right now. The first proper chance isn’t until Tuesday morning, 18 August. That’s roughly a 5-day wait from today, with only so-so conditions in between.

Tuesday the 18th, early, it gets interesting. Swell is 4ft from the SW, with a long 16-second period – proper groundswell. Winds are glassy, just a slight air, so it’ll be clean as can be. Combined energy is moderate at 1895. This is your first standout: Wanjapu with clean glass and a long-period SW swell. For a reef, that long period is a bonus – the waves will shape up nicely. At 4ft, it’s a good size for most, but the power from that period means it’s best for experienced surfers. Crowds can happen here, so you might see a few others.

Wednesday morning, 19 August, is the cream of the crop. Swell jumps to 8ft from the SW, period stretches to 18 seconds – very long-period energy, strong combined energy at 3285. Winds are glassy again, from the SSW at 5 km/h, so it’s offshore. This is prime: big, clean, powerful lines on the reef. But at 8ft, it’s expert-only – too big for beginners. The direction is dead on the optimum SW, so the reef will be firing its best.

Thursday morning, 20 August, the swell peaks at 10ft from the SW, 16-second period, combined energy strong at 4342. Winds glassy. This is heavy – for experts only. If the conditions hold, it’s a serious session.

The swell stays solid over the weekend but with more cross-shore wind. Friday 21 August morning has 7ft SW with cross-shore breezes – still fun, but not glassy.

In the second week, another notable window is Thursday morning, 27 August, with glassy winds and 6ft SW swell, period 14 seconds, combined energy 1771. That’s a clean, mellow morning for experienced surfers if you missed the early action. Long-range is always a bit less certain, but the pattern of SW groundswell with morning glass is promising.

Best of the bunch? Wednesday morning, 19 August – 8ft SW, 18-second period, glassy, optimum direction. Circle that one. Tuesday the 18th is a solid second choice for cleaner but smaller waves. The 20th and 27th are worth a look for the experienced crew.

Keep your eye on those morning glass-offs and don’t sleep on that Wednesday session.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

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

Thu
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
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
3
3
4
3
3
4
3
3
4
2
3
3
4
3
4
5
4
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SSW
16
1.8
SSW
16
1.7
SSW
16
1.6
SSW
15
1.5
SSW
15
1.7
SSW
17
1.9
SSW
17
1.8
SSW
16
1.9
SSW
16
1.8
SSW
16
1.7
SSW
15
1.5
SSW
14
1.5
SSW
14
1.3
SSW
14
1.2
SW
16
1.7
SSW
16
1.9
SW
16
2.3
SW
18
2.5
SW
18
3
SW
17
Wave Graph
Metric surfscale
Energy kJ
1928
1671
1379
1102
974
1817
2171
1734
1811
1547
1174
947
934
607
786
1373
1852
3267
3796
4484
Wind (km/h)
15
SSE
15
ESE
5
S
15
SSE
15
ESE
5
SW
15
SSE
5
E
5
SW
15
SE
10
ESE
5
SW
10
SE
10
E
5
SSW
15
SSE
10
E
5
SSW
10
SSE
10
ESE
Wind State
cross
cross-off
cross-on
cross
cross-off
on
cross
glassy
on
cross
cross-off
on
cross
cross-off
glassy
cross
cross-off
glassy
cross
cross-off
High Tide
11:11PM2.60m
11:06AM2.99m
11:43PM2.79m
11:45AM2.95m
00:14AM2.90m
12:21PM2.83m
00:44AM2.93m
12:55PM2.63m
1:13AM2.88m
1:27PM2.39m
1:41AM2.76m
1:58PM2.13m
2:10AM2.58m
Low Tide
4:59PM0.06m
5:02AM0.51m
5:31PM0.03m
5:41AM0.36m
6:02PM0.08m
6:19AM0.30m
6:30PM0.18m
6:55AM0.32m
6:57PM0.33m
7:31AM0.42m
7:22PM0.52m
8:06AM0.57m
7:46PM0.72m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:15
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:01
6:01
6:01
6:01
6:01
6:01
 mm
Temp °C
25
24
25
26
25
25
26
25
26
26
25
25
26
25
25
26
25
26
26
25
Feels °C
27
24
27
28
26
28
30
27
29
29
28
28
29
28
28
29
27
28
28
28
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Wanjapu:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Wanjapu surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest