
Surf Forecasts:
Wanjapu surf forecast from 12 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 2AM (local time) - 4.5ft (1.4m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 14 Jul, 11PM (local time) - 6.5ft (2.0m), 18s period, SSW swell with 2,444 kJ wave energy.
- Next surfable swell (1★+): Sunday 12 Jul, 11PM (local time) - 2.5ft (0.7m), 13s 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 Sunday (Jul 12) at 11PM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.9m 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 2.0m 18s and forecast to arrive on Tuesday (Jul 14) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Jul 13) at 11PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 12th Jul) | 2.5ft (0.7m) 13s |
| Best Surf | 2AM (Tue 14th Jul) | 4.5ft (1.4m) 19s |
| Most Powerful | 11PM (Tue 14th Jul) | 6.5ft (2.0m) 18s |
Table - best surf conditions forecast for Wanjapu over the next 16 days.
Alright, this is Rusty. Let's have a good look at what's on the cards for the next couple of weeks.
Right off the bat, Wanjapu is an exposed reef break that likes the swell from the SW. It's consistent and it's an advanced wave, so this isn't a beginner's playground. The water is sitting at 80°, which is pretty much normal for this time of year, so no surprises there.
The week kicks off with a bit of a slow start. Sunday the 12th is a write-off. We've got a 4ft SW swell, but it's cross-shore and the forecast is just marginal. Not worth paddling out for. Monday morning the 13th is a different story though. The swell drops to 3ft from the SW, but the wind goes glassy. That's the magic word. It's clean, it's smooth, and the energy is moderate. This is the kind of morning where you can find a nice line and just cruise. It's a small window, but it's a good one.
The middle of the week builds in size. Wednesday afternoon the 15th is a standout. The swell jumps to 6ft from the SW with a solid 16-second period, and we get a clean, cross-off wind. The energy is pumping. This is the kind of session that's going to have some push and shape. It's a good one for experienced surfers. Thursday the 16th and Friday the 17th are still in the 4ft to 5ft range, but the winds are a bit messier – cross-shore with a chop. It's still surfable, but not as clean.
Now, look ahead to the next week. Monday the 20th is a big one. We're looking at a 8ft to 8ft SSW swell with a 17-second period. The energy is through the roof. This is serious groundswell. The winds are clean on the afternoon, with a cross-off. This is the best on offer by a long shot. It's a heavy wave at that size, so only for the crew who know what they're doing. The crowds are likely to be around, but with that much power, the lineup will sort itself out. Then again on Saturday the 25th, another big pulse hits – 8ft from the SSW with a 17-second period and energy going even bigger. That's a massive day. It's a close call, but the Monday the 20th afternoon gets the nod for the slightly cleaner wind.
There's a bit of a gap in the middle of the second week. From Tuesday the 21st to Friday the 24th, the swell drops a bit and the winds are mostly cross-shore. It's a bit of a lull, but nothing too drastic. The weekend of the 26th and 27th sees the size hold around 8ft, but the winds are cross again, making it a bit of a battle.
Overall, the standout is the 20th of July for the afternoon session. The size, the period, and the clean wind are a proper combo. The 25th is a close second, but a bit windier. Don't sleep on Monday morning the 13th though – it's small, but glassy, and sometimes that's the best wave of the week.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sun morning, min 23°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu afternoon. Warm (max 26°C on Wed afternoon, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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) | SW 14 | SW 13 | SW 13 | SW 13 | SSW 21 | SW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||||
526 | 424 | 162 | 265 | 286 | 1457 | 1702 | 1859 | 2065 | 2077 | 1611 | 1431 | 1059 | 940 | 844 | 667 | 1210 | 574 | 1062 | 1006 | 862 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | glassy | cross | cross-off | cross-on | cross | cross-off | cross-on | cross-off | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 9:08PM1.84m | 8:32AM2.73m | 10:02PM2.02m | 9:32AM2.89m | 10:47PM2.21m | 10:25AM3.01m | 11:28PM2.39m | 11:12AM3.06m | 00:07AM2.54m | 11:57AM3.01m | 00:44AM2.65m | 12:39PM2.86m | 1:20AM2.70m | ||||||||
Low Tide | 2:47PM0.48m | 2:08AM1.17m | 3:44PM0.26m | 3:17AM1.01m | 4:31PM0.09m | 4:14AM0.84m | 5:13PM-0.01m | 5:04AM0.68m | 5:52PM-0.03m | 5:51AM0.57m | 6:29PM0.03m | 6:36AM0.53m | 7:03PM0.15m | ||||||||
6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 28 | 29 | 26 | 27 | 29 | 25 | 27 | 28 | 26 | 26 | 27 | 26 | 28 | 27 | 25 | 27 | 26 | 23 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SSE 6 | SW 13 | SW 12 | SW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 16 | SW 14 | SW 15 | SW 14 | SW 14 |
526 | 424 | 43 | 265 | 252 | 1457 | 1702 | 1859 | 2065 | 2077 | 1611 | 1431 | 1059 | 940 | 844 | 667 | 1210 | 404 | 1062 | 1006 | 862 | |
Swell 2 Height (m) Direction Period (s) | SSE 6 | SSE 6 | SW 13 | SSE 6 | SSW 21 | SSE 6 | SSE 6 | SSW 21 | SE 6 | SE 7 | — | SE 6 | SE 7 | SSW 21 | SSW 20 | SW 18 | — | SW 16 | — | — | SE 6 |
35 | 34 | 162 | 30 | 286 | 41 | 31 | 180 | 37 | 35 | — | 61 | 77 | 45 | 149 | 319 | — | 574 | — | — | 75 | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 13 | SW 23 | W 15 | SSW 19 | — | — | — | — | — | — | S 24 | — | — | — | — | SSE 6 | — | — | SW 26 |
— | — | 134 | 137 | 4 | 630 | — | — | — | — | — | — | 11 | — | — | — | — | 65 | — | — | 26 | |
Wind waves Height (m) Direction Period (s) | — | SE 6 | SE 6 | SE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 7 | SE 6 | SE 7 | — | SE 7 | SE 6 | SSE 6 | SE 5 | SE 6 | SSE 6 | SE 5 | SE 6 |
— | 76 | 112 | 84 | 29 | 104 | 77 | 33 | 120 | 114 | 87 | 204 | — | 128 | 94 | 47 | 83 | 152 | 32 | 45 | 223 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 116 | 0 | 0 | 262 | 0 | 119 | 118 | 0 | 119 | 0 | 2 | 119 | 262 | 108 | 119 | 118 | 33 | 119 | 2 | 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.










