
Surf Forecasts:
Wanjapu surf forecast from 10 Jul 2026:
- Best quality surf: Saturday 11 Jul, 2AM (local time) - 6ft (1.8m), 16s 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 2,471 kJ wave energy.
- Next surfable swell (1★+): Saturday 11 Jul, 2AM (local time) - 6ft (1.8m), 16s 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 Saturday (Jul 11) at 2AM. The primary swell is predicted to be 1.8m and 16s period with a secondary swell of 1.0m and 7s. 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 1.8m 6s period and expected on Tuesday (Jul 14) at 11PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sat 11th Jul) | 6ft (1.8m) 16s |
| Best Surf | 2AM (Sat 11th Jul) | 6ft (1.8m) 16s |
| Most Powerful | 11PM (Tue 14th Jul) | 6.5ft (2.0m) 18s |
Table - best surf conditions forecast for Wanjapu over the next 16 days.
G’day, I’m Rusty, and I’ve been looking at the charts for your area. It’s a mixed bag, but there’s a few good windows if you’re willing to wait.
The main spot is Wanjapu, a reef break that’s exposed to the SW swell. This is a consistent, advanced wave, so it’s for the seasoned crew. The water’s sitting at 81°, which is about average for the time of year, so no big deal.
The first few days are a bit of a mess. Friday the 10th and Saturday the 11th are small, with cross-winds and chop making it sloppy. Not worth the effort.
Sunday morning the 12th finally gives us a break. The swell is 4ft from the SW, and the wind goes glassy. It’s small, but it’ll be clean. The combined energy is moderate (569), so don’t expect anything huge.
Monday the 13th is similar—glassy morning with a tiny 3ft SW swell. The energy is weak (420). It’s a good day for a longboard or a beginner.
Here’s the first real standout: Tuesday the 21st of July. The morning brings a solid 7ft SSW swell, glassy conditions, and a combined energy of 1991 (moderate). That’s a powerful, clean swell on a reef. The period is 16 seconds, which is a long-period groundswell, so it’ll be a big, deep-water wave that holds its shape. The crowd factor is “sometimes,” so you might see a few others, but it’s worth it. This is for experienced surfers only—over 8ft is expert territory, but 7ft is still a serious, heavy wave.
The following Wednesday the 22nd is also a gem. Glassy again, with a 5ft SW swell. The energy is moderate (794). It’s smaller, but that glassy wind will make it like butter. The afternoon is even better, with zero wind and a 4ft SSW swell. Perfect.
Thursday the 23rd keeps the glassy trend with a 3ft SSW swell, and the energy is weak (507). It’s a small, clean wave.
The last standout is Saturday the 25th of July. The morning is glassy with a 5ft SW swell, a combined energy of 1074 (moderate), and a period of 14 seconds. It’s another excellent session for experienced surfers. The wind is dead calm, so it’ll be absolutely pristine.
There are gaps of a few days mid-month where the wind is cross and the surf is marginal, but the windows for clean, glassy conditions are what you’re after. The long-range stuff is promising but less certain; the 21st and 25th look the best on paper.
Overall, keep your eyes on Tuesday the 21st and Saturday the 25th for the best waves. The rest is a bit of a gamble, but the reef at Wanjapu can handle a bit of direction.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Fri morning, min 23°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | |||||||||||||||
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 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 21 | SW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||||
1111 | 1852 | 1602 | 1237 | 1092 | 725 | 534 | 424 | 162 | 265 | 286 | 1441 | 1702 | 2144 | 2041 | 1924 | 1631 | 1431 | 1074 | 1074 | 940 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-on | cross | cross-off | glassy | cross | off | glassy | cross | cross-off | cross | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off |
High Tide | 6:06PM1.67m | 6:06AM2.47m | 7:51PM1.70m | 7:23AM2.57m | 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 | ||||||||
Low Tide | 12:01PM0.86m | 11:06PM1.16m | 1:33PM0.70m | 00:38AM1.23m | 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 | ||||||||
6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 26 | 26 | 24 | 27 | 28 | 26 | 29 | 28 | 26 | 29 | 29 | 27 | 28 | 28 | 27 | 27 | 28 | 24 | 26 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SSE 6 | SW 13 | SW 12 | SW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
1111 | 1852 | 1602 | 1237 | 1092 | 725 | 534 | 424 | 39 | 265 | 252 | 1441 | 1702 | 2144 | 2041 | 1924 | 1631 | 1431 | 1074 | 1074 | 940 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | — | SSE 7 | S 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | SW 13 | SSE 6 | SSW 21 | SSE 6 | SSE 6 | SSW 21 | SE 6 | SE 7 | — | SSE 7 | SE 7 | — | — |
604 | — | 83 | 20 | 35 | 49 | 35 | 16 | 162 | 18 | 286 | 27 | 22 | 180 | 56 | 47 | — | 78 | 50 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 6 | — | — | — | SE 6 | SW 13 | SW 23 | S 6 | SE 5 | — | — | — | — | — | SSW 19 | — | — | — |
— | — | — | 19 | — | — | — | 14 | 134 | 137 | 10 | 47 | — | — | — | — | — | 74 | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 6 | SE 6 | ESE 6 | — | SE 6 | — | — | SE 6 | SE 6 | — | SE 6 | — | SE 6 | SE 6 | SE 6 | — | SE 7 | SE 7 | SE 7 | SE 6 | SE 6 |
38 | 88 | 93 | — | 91 | — | — | 39 | 86 | — | 21 | — | 56 | 97 | 152 | — | 63 | 189 | 189 | 113 | 94 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 119 | 262 | 0 | 2 | 118 | 0 | 0 | 118 | 0 | 0 | 120 | 0 | 2 | 108 | 0 | 119 | 262 | 0 | 119 | 118 | 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)
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.










