
Surf Forecasts:
Wanjapu surf forecast from 29 Jul 2026:
- Best quality surf: Thursday 30 Jul, 11PM (local time) - 3.5ft (1.0m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 2PM (local time) - 6ft (1.9m), 16s period, SSW swell with 1,877 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 11PM (local time) - 4ft (1.2m), 14s 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 Wednesday (Jul 29) at 11PM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 1.1m 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 1.9m 16s and forecast to arrive on Sunday (Aug 02) at 2PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Wednesday (Jul 29) at 11PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 29th Jul) | 4ft (1.2m) 14s |
| Best Surf | 11PM (Thu 30th Jul) | 3.5ft (1.0m) 19s |
| Most Powerful | 2PM (Sun 2nd Aug) | 6ft (1.9m) 16s |
Table - best surf conditions forecast for Wanjapu over the next 16 days.
The Lowdown
Alright crew, Rusty here. Let’s get into it. We’ve got a solid run of swell on the horizon, but it’s not all good news. The early part of the week is a bit average with onshore or cross-shore winds messing with the texture, but it gets interesting from Saturday morning onwards.
The standout window kicks off on Saturday, August 1st. The morning at Wanjapu is going to be pure magic. The wind is dead calm, glassy conditions, and the water is sitting at 79°, which is just about average for this time of year – nothing strange there. The swell is a clean 4ft from the SSW with a period of 16 seconds, which is a proper long-period groundswell packing plenty of energy (1301). That kind of period loves a reef setup, so the shape should be great. It’s a consistent, advanced break, so respect the power. This is the best on offer, hands down. Crowds are possible, but with conditions this good, it’ll be worth it.
Then Sunday, August 2nd, delivers another cracker. The morning is glassy again, winds are nothing, and the swell has bumped up to 6ft from the SW, still with a 16-second period. The energy is even stronger (1690). This is a powerful, clean wave for experienced surfers. It’s a little bigger, so it’s for the crew who know what they’re doing.
The following week has some smaller windows of clean conditions. Tuesday, August 4th, has a glassy morning with a 5ft SW swell (14 seconds, 1049 energy). Not as punchy, but still a fun, clean option. And then Monday, August 10th, looks like another promising one with a glassy morning, a 7ft SSW swell (15 seconds, 2770 energy) – that’s a lot of energy, so it’s definitely for advanced surfers only. The period is a touch shorter, so it’s not as drawn out as the first weekend, but it’s still a solid groundswell.
There’s a stretch of days from the end of July right through the first week of August where the winds are mostly cross or cross-on, so the surf will be a bit bumpy and messy. It’s not terrible, but it’s not the clean stuff we’re after. The scores reflect that – marginal, with a bit of chop.
The last week of the forecast, from around August 7th onwards, the swell stays solidly in the 6ft to 7ft range, but the winds are mostly cross-shore with a moderate breeze, so it’s going to be a bit lumpy. Those higher energy days (over 2000) are impressive, but without the glassy wind, it’s not going to be the kind of session you’d call in sick for. Still, if you’re keen on a paddle and just want some power, there’s plenty of it.
So, for the best of the best: Saturday August 1st morning and Sunday August 2nd morning at Wanjapu. That’s where you’ll find the cleanest, most powerful waves of the forecast. Lock it in.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Wed afternoon, min 22°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sat afternoon, min 23°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | ||||||||||||||
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 14 | SSW 14 | SSW 19 | SSW 14 | SSW 17 | SW 17 | SW 16 | SSW 16 | SW 16 | SSW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 16 |
Wave Graph | ||||||||||||||||||||
515 | 501 | 545 | 643 | 565 | 1009 | 679 | 1057 | 832 | 1286 | 1663 | 1652 | 1693 | 1611 | 1074 | 1045 | 1059 | 1031 | 947 | 661 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-on | cross | off | cross-on | cross | off | glassy | cross-on | cross-off | glassy | cross-on | cross-off | cross | cross | cross-off | glassy | cross | cross-off |
High Tide | 11:11PM2.23m | 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 | |||||||
Low Tide | 4:55PM0.31m | 4:43AM0.89m | 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 | |||||||
— | — | 6:20 | — | — | 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 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 26 | 24 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 24 | 22 | 25 | 25 | 24 | 26 | 26 | 25 | 27 | 27 | 24 | 29 | 28 | 27 | 28 | 29 | 28 | 28 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SW 17 | SW 16 | SSW 16 | SW 16 | SSW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 |
515 | 501 | 545 | 553 | 538 | 1009 | 679 | 1057 | 832 | 1286 | 1663 | 1652 | 1693 | 1611 | 1074 | 1045 | 1059 | 1031 | 947 | 509 | |
Swell 2 Height (m) Direction Period (s) | SW 23 | SSE 6 | SSE 6 | SSW 19 | SSW 18 | SSW 13 | SSW 14 | SSE 6 | SW 19 | SSE 6 | SE 7 | SE 7 | SE 7 | SE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SW 16 |
21 | 47 | 33 | 643 | 565 | 215 | 384 | 28 | 450 | 14 | 22 | 38 | 37 | 38 | 26 | 18 | 16 | 18 | 19 | 661 | |
Swell 3 Height (m) Direction Period (s) | — | SW 21 | SSW 20 | — | SSE 6 | SSE 6 | SSE 6 | SSW 22 | SE 6 | — | — | — | — | — | — | — | — | — | S 26 | SE 6 |
— | 116 | 256 | — | 47 | 26 | 25 | 45 | 19 | — | — | — | — | — | — | — | — | — | 13 | 28 | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 6 | SE 6 | — | — | — | — | — | — | — | — | SE 7 | — | — | SE 6 | — | — | — | — |
104 | 135 | 93 | 47 | — | — | — | — | — | — | — | — | 118 | — | — | 62 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 262 | 0 | 119 | 262 | 0 | 119 | 116 | 0 | 0 | 108 | 0 | 0 | 33 | 0 | 2 | 108 | 0 | 0 | 108 | 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.










