Surf Forecasts:
Wanjapu surf forecast from 30 Jul 2026:
- Best quality surf: Thursday 6 Aug, 5AM (local time) - 7ft (2.2m), 18s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 6 Aug, 8AM (local time) - 7ft (2.2m), 18s period, SSW swell with 3,067 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 11PM (local time) - 3.5ft (1.0m), 19s 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 (Jul 30) at 11PM. The primary swell is predicted to be 1.0m and 19s period with a secondary swell of 1.2m and 14s. Another secondary swell of 1.0m and 6s is also forecast. 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 2.2m 18s and forecast to arrive on Thursday (Aug 06) 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 1.8m 7s period and expected on Sunday (Aug 02) at 8PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 30th Jul) | 3.5ft (1.0m) 19s |
| Best Surf | 5AM (Thu 6th Aug) | 7ft (2.2m) 18s |
| Most Powerful | 8AM (Thu 6th Aug) | 7ft (2.2m) 18s |
Table - best surf conditions forecast for Wanjapu over the next 16 days.
The Lowdown
G’day, Rusty here, stoked to get the local skinny on Wanjapu. We’ve got a solid run of swell on the cards, but it’s not all clean and easy. The water temp is sitting at a pretty normal 79°, just about average for this time of year, so you won’t need a thick wetsuit.
The pattern kicks off on Thursday the 30th of July, but honestly, those first few days are a bit of a write-off. Thursday and Friday mornings are plagued by a cross-onshore breeze with only 4ft to 4ft of SSW swell and periods around 14 to 17 seconds. The wave energy is moderate (832 to 1257), but the wind messes it up, leaving a light chop on the face. Friday afternoon is similar, just a gentle cross-shore breeze. Nothing to get excited about yet.
Things start to turn the corner on Saturday the 1st of August. We get a gorgeous morning with glassy conditions and a clean 4ft SSW swell pushing in with a 16-second period. The ocean energy is ramping up nicely at 1303. Saturday afternoon stays glassy with a touch bigger 5ft SW swell. This is where it starts looking fun for the experienced crew. Sunday the 2nd of August morning is the real standout of this first week. We’ve got glassy conditions, 6ft SW swell with that long 16-second period, and the energy is pumping at 1675. This is excellent surf for anyone who knows what they’re doing – clean, consistent, and plenty of push. Keep in mind, that long-period groundswell can make the sets a bit straighter on a reef setup, but Wanjapu handles it well.
Sunday afternoon and Monday see a bit of wind creep back in, a light cross-onshore that takes the polish off, though the swell sticks around. Tuesday the 4th of August morning is another glassy gem with 5ft SW swell and 14-second period, but the energy drops a little (1034). Still a quality session though. The end of that week gets a bit lumpy with increasing cross-shore winds and the swell holding around 5ft to 7ft. There’s a pulse of stronger energy on Thursday the 6th of August morning, hitting 7ft SSW at 3025, but it’s cross-shore and a bit chopped.
The next real standout pops up on Friday the 14th of August. This is a long-range call, so less certain, but the numbers are eye-watering. We’re looking at a solid 12ft SW swell with a 17-second period and massive energy levels of 6097. The morning is only a light cross-onshore breeze, so it’ll be lumpy but powerful. This is big, expert-only territory. For anyone else, it’s a spectator day. Wanjapu is a consistent reef, but over 8ft, you need to know what you’re doing.
Best on offer: Sunday the 2nd of August morning for the clean, glassy 6ft SW groundswell. And keep an eye on Friday the 14th of August for the big, powerful 12ft SW pulse – but only if you’ve got the skills for heavy water.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 26°C on Sat afternoon, min 22°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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) | SSW 14 | SSW 19 | SSW 14 | SSW 17 | SW 17 | SW 16 | SSW 16 | SW 16 | SSW 18 | SW 16 | SSW 16 | SSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 16 | SW 14 | SW 15 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 545 | 643 | 565 | 1009 | 679 | 1057 | 832 | 1302 | 1663 | 1652 | 1877 | 1765 | 1088 | 1045 | 1045 | 1016 | 947 | 610 | 1079 | 1059 | 3033 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | off | cross-on | cross | off | glassy | glassy | cross-off | glassy | cross-on | cross-off | cross | cross-on | cross-off | glassy | cross-on | cross-off | cross | cross | cross-off |
High Tide | 10:45AM2.72m | 11:37PM2.38m | 11:17AM2.79m | 00:02AM2.51m | 11:48AM2.79m | 00:27AM2.61m | 12:18PM2.74m | 00:51AM2.69m | 12:49PM2.63m | 1:17AM2.72m | 1:21PM2.47m | 1:46AM2.72m | 1:56PM2.25m | 2:18AM2.67m | |||||||
Low Tide | 5:22PM0.22m | 5:16AM0.77m | 5:48PM0.18m | 5:48AM0.67m | 6:13PM0.18m | 6:20AM0.60m | 6:38PM0.23m | 6:53AM0.56m | 7:03PM0.33m | 7:28AM0.56m | 7:29PM0.46m | 8:07AM0.60m | 7:56PM0.62m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 26 | 24 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 26 | 25 | 23 | 26 | 26 | 24 | 27 | 28 | 25 | 28 | 28 | 28 | 27 | 29 | 27 | 28 | 29 | 27 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SW 17 | SW 16 | SSW 16 | SW 16 | SSW 18 | SW 16 | SSW 16 | SSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 14 | SW 15 | SW 19 |
| kJ | 545 | 553 | 538 | 1009 | 679 | 1057 | 832 | 1302 | 1663 | 1652 | 1877 | 1765 | 1088 | 1045 | 1045 | 1016 | 947 | 577 | 1079 | 1059 | 3033 |
Swell 2 Height (m) Direction Period (s) | SSE 6 | SSW 19 | SSW 18 | SSW 13 | SSW 14 | SSE 7 | SW 19 | SE 6 | SE 7 | SE 7 | SE 7 | SE 6 | SSE 6 | — | SE 6 | SE 6 | SE 6 | SW 16 | SW 22 | SW 20 | SE 6 |
| kJ | 31 | 643 | 565 | 212 | 384 | 29 | 450 | 9 | 21 | 23 | 38 | 38 | 27 | — | 27 | 18 | 18 | 610 | 229 | 604 | 32 |
Swell 3 Height (m) Direction Period (s) | SSW 20 | — | SE 6 | SSE 6 | SSE 6 | SSW 22 | SE 7 | — | — | — | — | — | — | — | — | — | — | SE 6 | SSE 5 | — | — |
| kJ | 256 | — | 56 | 36 | 26 | 45 | 21 | — | — | — | — | — | — | — | — | — | — | 26 | 11 | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 6 | — | — | SE 6 | — | — | — | — | — | SE 7 | SE 6 | — | SSE 6 | — | — | — | — | SE 6 | SE 4 | ESE 6 |
| kJ | — | 55 | — | — | 58 | — | — | — | — | — | 153 | 101 | — | 25 | — | — | — | — | 38 | 15 | 81 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 119 | 262 | 0 | 119 | 108 | 0 | 0 | 0 | 0 | 0 | 116 | 0 | 2 | 116 | 0 | 0 | 118 | 0 | 119 | 118 | 2 |
Best forecast wave conditions in Sumba | |||||||||||||||||||||
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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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