Surf Forecasts:
Wanjapu surf forecast from 2 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: Saturday 8 Aug, 2AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,586 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 11PM (local time) - 6ft (1.9m), 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 Sunday (Aug 02) at 11PM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 0.9m and 7s. Another secondary swell of 1.6m and 7s 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 2.5m 16s and forecast to arrive on Saturday (Aug 08) at 2AM. 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 6s period and expected on Monday (Aug 03) at 8PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 2nd Aug) | 6ft (1.9m) 16s |
| Best Surf | 8PM (Fri 7th Aug) | 8ft (2.5m) 16s |
| Most Powerful | 2AM (Sat 8th Aug) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Wanjapu over the next 16 days.
The Lowdown
G'day, Rusty here. Let's have a look at what's coming our way for the next couple of weeks. We're focusing on Wanjapu, a reef break that's got a consistent track record. The water's sitting at a pretty warm 79°, which is pretty much spot on for this time of year, so no wetsuit worries there.
The next two weeks are packed with solid swell, but it's a bit of a mixed bag with the winds. The real standout window is the first few days, where we get clean conditions. Monday the 3rd of August afternoon is looking mint – we've got a 5ft SW swell with a 15-second period, and the wind is a light cross-offshore breeze out of the ESE. That's going to be proper clean. Then Tuesday the 4th and Wednesday the 5th mornings are also absolute crackers: glassy conditions, 5ft SW swell, and moderate wave energy. These are your best bets for a smooth, lined-up reef wave. The swell direction is SSW, which is spot on for Wanjapu's optimum.
The swell hangs in there for the rest of the week, but the winds start to get a bit cross or cross-on, making things a little lumpy. From Thursday the 6th, the swell picks up to over 7ft, but it's not as clean. By Friday the 7th and Saturday the 8th of August, we're looking at 8ft SSW swell with very strong energy, but it's borderline too big for most and the wind is a bit messy. That's more for the experienced crew.
We get another brief clean-up on Monday the 10th and Tuesday the 11th of August mornings with glassy conditions and a 6ft to 7ft SW swell. That's a decent little window. After that, the swell stays around, but the winds freshen up again, with a lot of cross-shore stuff. The second week, from the 13th, the swell gets bigger again, hitting 8ft, but the wind is more of a fresh breeze, so it's not the best for the paddle.
The last few days, from the 15th, the swell starts to drop back under 7ft, but the wind stays moderate. Overall, the first few days and the mid-week clean windows are your best chance for a quality session at Wanjapu.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sun afternoon, min 23°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 22°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sun 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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 16 | SSW 16 | SSW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 16 | SW 14 | SW 15 | SW 19 | SSW 18 | SW 17 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1855 | 1765 | 1190 | 1045 | 1059 | 1031 | 1002 | 525 | 1016 | 966 | 2501 | 2672 | 2652 | 2146 | 3011 | 3506 | 3586 | 3319 | 3113 | 2291 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off |
High Tide | 00:51AM2.69m | 12:49PM2.63m | 1:17AM2.72m | 1:21PM2.47m | 1:46AM2.72m | 1:56PM2.25m | 2:18AM2.67m | 2:38PM2.00m | 2:59AM2.58m | 3:35PM1.72m | 3:56AM2.45m | 5:28PM1.51m | ||||||||
Low Tide | 6:38PM0.23m | 6:53AM0.56m | 7:03PM0.33m | 7:28AM0.56m | 7:29PM0.46m | 8:07AM0.60m | 7:56PM0.62m | 8:52AM0.69m | 8:26PM0.81m | 9:51AM0.81m | 9:01PM1.02m | 11:22AM0.90m | 9:58PM1.24m | |||||||
 |  | | | | | | | | | | | | | | | | |  | | |
 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 28 | 28 | 29 | 26 | 26 | 27 | 25 | 26 | 27 | 26 | 26 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 14 | SW 15 | SW 19 | SSW 18 | SW 17 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 |
| kJ | 1855 | 1765 | 1190 | 1045 | 1059 | 1031 | 1002 | 525 | 1016 | 966 | 2501 | 2672 | 2652 | 2146 | 3011 | 3506 | 3586 | 3319 | 3113 | 2291 |
Swell 2 Height (m) Direction Period (s) | — | SE 6 | SE 7 | — | SE 6 | SSE 6 | SSE 6 | SW 16 | SW 22 | SW 21 | SE 6 | — | — | SE 5 | SE 6 | — | — | SE 5 | WSW 20 | — |
| kJ | — | 42 | 37 | — | 38 | 25 | 24 | 521 | 120 | 358 | 31 | — | — | 30 | 54 | — | — | 34 | 39 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 6 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 33 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 7 | SE 7 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | — | SE 5 | SE 6 | — | SE 5 | SSE 5 |
| kJ | 55 | 131 | 121 | 45 | 112 | 78 | 82 | 86 | 31 | 76 | 92 | 54 | 43 | 67 | — | 102 | 52 | — | 55 | 37 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 118 | 0 | 2 | 0 | 0 | 0 | 116 | 0 | 0 | 116 | 0 | 119 | 262 | 0 | 2 | 118 | 21 | 118 | 118 | 0 |
Best forecast wave conditions in Sumba | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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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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