Wanjapu Surf Break

Lat Long: 9.65° S 119.02° E

Wanjapu Surf Forecast and Surf Report

Issued: 1 am 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Wanjapu sea temperature is
25.8° C
0.3° 

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


Wanjapu surf forecast from 10 Aug 2026:

  • Best quality surf: Tuesday 11 Aug, 8AM (local time) - 8ft (2.5m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 11 Aug, 8AM (local time) - 8ft (2.5m), 17s period, SSW swell with 4,222 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 11 Aug, 8AM (local time) - 8ft (2.5m), 17s 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 Tuesday (Aug 11) at 8AM. The primary swell is predicted to be 2.5m and 17s period with a secondary swell of 0.5m and 21s. 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 17s and forecast to arrive on Tuesday (Aug 11) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Tuesday (Aug 18) at 5AM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Tue 11th Aug)8ft (2.5m) 17s
Best Surf 8AM (Tue 11th Aug)8ft (2.5m) 17s
Most Powerful 8AM (Tue 11th Aug)8ft (2.5m) 17s

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


The Lowdown

Rusty here, lookin’ at what we’ve got for the next couple weeks. Wanjapu (this is a reef setup, so it’s got some structure to it) is the only spot we’re working with, and overall, it’s not gonna blow your mind at first. There’s a rough start, with no real gems right away. The first few days from Tuesday, August 11th, through to the end of that week, you’ve got swell showing up around 5ft to 8ft, but the wind’s mostly cross or cross-on, keeping things messy. The water temp sits around 78°F, which is pretty much normal for this time of year.

Come Saturday morning, August 15th, things get interesting. Swell from the SSW at 6ft, period a long 17 seconds—that’s proper groundswell energy—and the wind goes glassy. The combined wave energy is decent at (1852), and for an experienced surfer, those long period lines will peel nicely over the reef. Crowds are possible though, so keep that in mind. The Saturday afternoon turns a bit cross again, so the morning window is the one.

Then there’s a bit of a lull into Sunday and Monday—still some swell but that cross-on wind makes it tough to get stoked about. The Monday morning, August 17th, has another glassy period with 5ft swell and a 14-second period, energy (1107), but the size is a little smaller.

Now, here’s the real standout: hold on for Friday, August 21st, morning. That’s when the conditions lock in. SSW swell hitting 8ft, period 17 seconds, combined energy a hearty (4021). And the wind? Glass. Dead calm. That’s a solid groundswell for experienced surfers only—over 8ft is expert territory—and the long period will wrap into the reef with some serious shape. Crowds might be around, but for a morning like that, it’s worth it.

Saturday, August 22nd, morning also gets glassy with the same 8ft SSW swell, period 16 seconds, energy (3208). Another excellent window, but the afternoon goes cross-on again.

After that, the second week fades a bit. Swell sticks around 5ft to 8ft but the wind turns mostly cross or onshore, and the quality gets patchy. The glassy windows are the only real highlights here, so aim for that late August 21st morning.

If you’re not on the reef those glassy mornings, the rest is either cross-onshore chop or just average. This reef handles the long period well, but you need the wind to play nice. Don’t wait too long.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
2
2
3
3
3
0
3
3
2
4
4
2
4
3
3
4
4
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SSW
17
2.4
SSW
16
2.4
SSW
16
1.8
SSW
15
2
SSW
17
1.5
SSW
13
1.9
SSW
17
1.9
SSW
16
1.8
SSW
16
1.7
SSW
16
1.6
SSW
15
1.5
SSW
15
1.7
SSW
17
1.8
SSW
17
1.9
SSW
16
1.9
SSW
16
1.8
SSW
16
1.7
SSW
15
1.6
SSW
14
1.5
SSW
14
1.4
SW
14
Wave Graph
Metric surfscale
Energy kJ
3937
3085
2751
1567
2173
755
1907
1951
1671
1379
1102
974
1817
1978
1904
1811
1629
1174
1057
934
661
Wind (km/h)
15
SE
20
SE
25
SE
15
SE
15
ESE
20
ESE
10
SSE
20
SSE
15
SE
10
S
15
SSE
15
ESE
5
SW
15
SSE
5
ESE
5
S
15
SSE
10
ESE
5
SW
15
SE
10
ESE
Wind State
cross
cross
cross
cross
cross-off
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross-off
glassy
cross
glassy
cross-on
cross
cross-off
glassy
cross
cross-off
High Tide
8:37AM2.59m
10:03PM2.10m
9:36AM2.79m
10:39PM2.37m
10:24AM2.94m
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
Low Tide
3:43PM0.35m
3:28AM0.99m
4:23PM0.17m
4:18AM0.72m
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
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:15
6:15
6:15
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
25
24
26
26
25
25
25
24
25
25
24
25
26
25
25
26
25
25
26
25
Feels °C
25
24
23
26
26
25
26
25
24
27
27
24
28
27
26
27
29
28
28
29
26
  • 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 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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