Surf Forecasts:
Wanjapu surf forecast from 16 Jul 2026:
- Best quality surf: Friday 17 Jul, 2AM (local time) - 4.5ft (1.4m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 20 Jul, 2PM (local time) - 7ft (2.1m), 17s period, SW swell with 2,454 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 2AM (local time) - 4.5ft (1.4m), 15s 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 Friday (Jul 17) at 2AM. The primary swell is predicted to be 1.4m and 15s period with a secondary swell of 1.1m and 7s. Another secondary swell of 1.7m 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 2.1m 17s and forecast to arrive on Monday (Jul 20) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 7s period and expected on Saturday (Jul 18) at 11PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 17th Jul) | 4.5ft (1.4m) 15s |
| Best Surf | 2AM (Fri 17th Jul) | 4.5ft (1.4m) 15s |
| Most Powerful | 2PM (Mon 20th Jul) | 7ft (2.1m) 17s |
Table - best surf conditions forecast for Wanjapu over the next 16 days.
The Lowdown
Hey, Rusty here. Let’s talk about what Wanjapu’s got cooking over the next couple of weeks. It’s a reef break that really lights up with southwest swell, and it’s a consistent spot, so when it turns on, you’ll know. Water temp is 80°, which is right about average for the season, nothing special.
Right now, we’ve got some solid groundswell rolling in from the southwest with 15-second periods - that’s long period, quality energy - and the combined energy is reading 1367, which is moderate to strong. Swell height is about 5ft, decent for advanced surfers, but the wind is a cross-onshore from the south at just 3 mph, so there’s a little bump on the face. Thursday morning is surfable, but not pristine. The afternoon gets a stronger cross-shore breeze, and the swell drops a touch. It’s okay, but nothing to get too excited about.
Friday and Saturday stay in the same groove: cross-shore winds, moderate breezes, swell around 4ft to 5ft with 14 to 16-second periods. Energy stays moderate, but the wind keeps the surface a bit wrinkled. Fine for a paddle, but not the best.
Now, Sunday through Tuesday next week sees the swell bump up. Monday morning is the one - 7ft of southwest swell with a 17-second period, combined energy at 2475 (strong), and the wind is light cross-shore. That’s a proper groundswell session for experienced surfers. The reef is going to be working hard. Crowds are listed as sometimes, so you might see a few others, but it’s not a contest.
Wednesday and Thursday are a letdown - smaller swell and cross-onshore winds making a mess. Not worth rushing out for.
But then, Wednesday the 29th of July and Friday the 31st are absolute diamonds. Wednesday morning is glassy - south wind at 3 mph, flat calm - with a clean 3ft swell and 16-second period. Energy is moderate (1140), and conditions are called excellent for experienced surfers. Friday the 31st is even bigger: 4ft swell, 16-second period, glassy again, and combined energy of 1937 (strong). The afternoon has a 22-second period swell with light cross-shore winds - that’s a very long period groundswell, perfect for a reef. These two days are the clear standouts.
So, for the advanced crew, Monday the 20th brings size, but the real gems are Wednesday the 29th and Friday the 31st - glassy, clean, proper groundswell. The rest of the period is mostly marginal, with a few blank days mixed in, which is normal around here.
Rusty, out.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 26°C on Thu morning, min 24°C on Thu morning). 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 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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 15 | SW 15 | SW 15 | SW 18 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1059 | 940 | 856 | 521 | 1115 | 574 | 962 | 844 | 810 | 656 | 628 | 637 | 2347 | 2119 | 2040 | 1446 | 1187 | 975 | 632 | 555 | 358 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 11:12AM3.06m | 00:07AM2.54m | 11:57AM3.01m | 00:44AM2.65m | 12:39PM2.86m | 1:20AM2.70m | 1:20PM2.65m | 1:56AM2.69m | 2:00PM2.39m | 2:32AM2.62m | 2:41PM2.12m | 3:10AM2.50m | 3:28PM1.85m | 3:54AM2.36m | |||||||
Low Tide | 5:52PM-0.03m | 5:51AM0.57m | 6:29PM0.03m | 6:36AM0.53m | 7:03PM0.15m | 7:20AM0.56m | 7:35PM0.32m | 8:04AM0.64m | 8:06PM0.52m | 8:49AM0.76m | 8:36PM0.74m | 9:39AM0.90m | 9:06PM0.96m | ||||||||
 | |  | |  |  | | | | | |  | | | | | | | | | | |
 | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 5:59 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 29 | 29 | 25 | 27 | 26 | 25 | 28 | 27 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 25 | 25 | 23 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 14 | SW 16 | SW 13 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 12 |
| kJ | 1059 | 940 | 856 | 521 | 1115 | 352 | 962 | 844 | 810 | 656 | 628 | 637 | 2347 | 2119 | 2040 | 1446 | 1187 | 975 | 632 | 555 | 358 |
Swell 2 Height (m) Direction Period (s) | SE 7 | SSW 21 | SE 7 | SW 18 | — | SW 16 | SSE 6 | — | SSE 7 | SW 22 | SW 21 | SSE 6 | SSE 6 | — | SE 6 | — | — | — | SW 18 | SSW 16 | SSW 15 |
| kJ | 67 | 45 | 116 | 449 | — | 574 | 47 | — | 83 | 20 | 112 | 71 | 34 | — | 52 | — | — | — | 80 | 105 | 207 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 20 | — | — | SE 6 | — | — | — | — | — | SSW 19 | — | — | — | — | — | — | — | S 6 | — |
| kJ | — | — | 149 | — | — | 73 | — | — | — | — | — | 475 | — | — | — | — | — | — | — | 1 | — |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 7 | SE 7 | SSE 6 | SE 6 | SE 6 | SE 6 | SE 6 | — | SE 7 | SE 6 | SE 6 | SE 6 | SSE 5 | SE 6 | SE 6 | SSE 5 | SE 5 | SSE 5 | SSE 5 | SE 5 |
| kJ | 241 | 135 | 301 | 74 | 109 | 203 | 109 | 124 | — | 73 | 161 | 186 | 94 | 40 | 131 | 32 | 39 | 38 | 33 | 35 | 53 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 119 | 0 | 119 | 116 | 33 | 119 | 118 | 0 | 119 | 118 | 0 | 119 | 118 | 108 | 116 | 265 | 108 | 263 | 265 | 108 |
Best forecast wave conditions in Sumba | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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