
Surf Forecasts:
Hilisataro surf forecast from 7 Aug 2026:
- Best quality surf: Saturday 8 Aug, 1AM (local time) - 7.5ft (2.3m), 16s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 11 Aug, 4PM (local time) - 7.5ft (2.3m), 18s period, SSW swell with 3,481 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 1AM (local time) - 7.5ft (2.3m), 16s period with SSW swell.
Best Forecast Surf Conditions for Hilisataro this week:
The surf forecast for Hilisataro over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 08) at 1AM. The primary swell is predicted to be 2.3m and 16s period with a secondary swell of 0.9m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Hilisataro in the next 16 days are 2.3m 18s and forecast to arrive on Tuesday (Aug 11) at 4PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 8th Aug) | 7.5ft (2.3m) 16s |
| Best Surf | 1AM (Sat 8th Aug) | 7.5ft (2.3m) 16s |
| Most Powerful | 4PM (Tue 11th Aug) | 7.5ft (2.3m) 18s |
Table - best surf conditions forecast for Hilisataro over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it. We’ve got a solid run of swell on the horizon for Hilisataro, a reef break that’s strictly for the advanced crew. The water’s sitting at a warm 86°, which is about normal for this time of year, so nothing weird going on there.
The first real action kicks off Friday afternoon, August 7th. We’re looking at a 7ft SSW groundswell with a very long 18-second period. The combined energy is pumping at 3170, and with glassy conditions and a light W wind, this is going to be some serious, clean, powerful surf. This is the standout of the whole window – it’s big, it’s clean, and it’s going to be a freight train on that reef. Only for the experienced though, as it’s well over 5ft.
Saturday the 8th keeps that energy rolling. Morning is dead calm with 7ft SSW swell at 16 seconds, and the energy is still massive at 2578. The afternoon stays glassy with a slight W breeze, dropping just a touch to 7ft. This is world-class stuff.
Sunday morning the 9th is still excellent – 6ft SSW, glassy, clear skies. But watch out, the afternoon brings a risk of thunderstorms and a cross-on wind, which will mess up the surface a bit. Monday the 10th is a mixed bag; the morning is marginal with onshore wind, but Monday afternoon is a stunner – a 4ft SSW swell with a ludicrous 22-second period, glassy conditions, and the energy is still high at 2097. That long period will make for super long, drawn-out lines on the reef.
Tuesday the 11th and Wednesday the 12th are a bit onshore at times, but Wednesday morning and afternoon are both glassy with clean 6ft and 6ft SSW swells. Thursday the 13th sees a drop to 5ft S swell, but it’s glassy in the morning. Friday the 14th is another big one: 8ft SSW at 16 seconds, dead calm in the morning, then glassy in the afternoon with a 7ft S swell. The energy is 2775 and 2441 respectively – this is another top-tier session.
The second week starts to get a little more mixed. From Saturday the 15th through Monday the 17th, the swell drops from 6ft down to 3ft. The energy drops too, down to 564 by Monday morning. It’s still glassy at times, but much smaller. Tuesday the 18th brings a new pulse of 7ft SSW swell, but with onshore and cross-on winds, it’s not looking as clean. Wednesday the 19th is the real wildcard – a 8ft SSW swell, and while the morning has cross-on winds, the afternoon is dead calm and glassy with a massive 4075 energy. That’s another expert-only session if it lines up, but it’s a long way out so don’t lock it in just yet. Thursday the 20th holds that 8ft SW swell with glassy conditions both morning and afternoon – promising. The rest of the week into the 22nd is on the marginal side with onshore breezes, but the swell sticks around at 7ft to 8ft.
Overall, the absolute best sessions are Friday the 7th and the morning of Saturday the 8th. That’s the top of the pile – big, clean, and powerful. The run from the 7th to the 14th is packed with quality.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sun night. Warm (max 29°C on Fri afternoon, min 26°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Mon afternoon. Warm (max 28°C on Wed morning, min 26°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | SSW 14 | SSW 22 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | S 12 | SSW 19 | SSW 17 |
Wave Graph | ||||||||||||||||||||
3002 | 2818 | 2447 | 2200 | 1835 | 1516 | 1899 | 1471 | 1187 | 1051 | 1724 | 2530 | 3481 | 2605 | 1992 | 1518 | 1518 | 668 | 1391 | 1779 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | glassy | glassy | glassy | glassy | cross-on | cross-on | on | glassy | glassy | on | on | glassy | glassy | glassy | cross-on | glassy | cross-on | glassy |
High Tide | 1:04AM0.69m | 1:05PM0.38m | 2:34AM0.72m | 3:06PM0.38m | 3:51AM0.79m | 4:27PM0.43m | 4:51AM0.86m | 5:23PM0.51m | 5:40AM0.92m | 6:08PM0.59m | 6:23AM0.94m | 6:49PM0.67m | ||||||||
Low Tide | 5:23PM0.14m | 8:24AM0.28m | 6:40PM0.17m | 10:13AM0.21m | 8:23PM0.17m | 11:11AM0.14m | 9:50PM0.14m | 11:53AM0.08m | 10:54PM0.09m | 12:29PM0.04m | 11:46PM0.06m | 1:01PM0.02m | 00:32AM0.04m | |||||||
— | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | |
6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | — | — | — | — | 1 | 1 | 2 | 1 | 3 | 4 | 2 | 2 | — | — | — | — | — | 1 | 2 |
Temp °C | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 34 | 31 | 34 | 34 | 31 | 32 | 32 | 31 | 32 | 31 | 32 | 31 | 31 | 32 | 32 | 32 | 31 | 33 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | S 12 | S 12 | SSW 17 |
3002 | 2818 | 2447 | 2200 | 1835 | 1516 | 1899 | 1471 | 1187 | 988 | 1724 | 2530 | 3481 | 2605 | 1992 | 1518 | 1518 | 668 | 638 | 1779 | |
Swell 2 Height (m) Direction Period (s) | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | SSW 22 | SSW 13 | SSW 13 | WNW 8 | WNW 8 | WNW 8 | SSE 4 | WNW 8 | SSW 20 | SSW 19 | S 12 |
162 | 129 | 126 | 103 | 106 | 106 | 82 | 79 | 55 | 1051 | 735 | 632 | 22 | 22 | 20 | 6 | 22 | 634 | 1391 | 520 | |
Swell 3 Height (m) Direction Period (s) | W 17 | W 16 | W 16 | W 15 | W 14 | SSW 18 | — | SSW 26 | SSW 23 | WNW 9 | SW 21 | WNW 8 | — | — | SSW 13 | WNW 8 | SSW 20 | SW 16 | SW 15 | WNW 8 |
6 | 5 | 5 | 4 | 4 | 249 | — | 65 | 365 | 58 | 548 | 39 | — | — | 17 | 13 | 140 | 236 | 137 | 20 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 26 | 26 | 0 | 0 | 26 | 76 | 0 | 0 | 0 | 26 | 0 | 17 | 0 |
Best forecast wave conditions in Nias | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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Information about the Hilisataro Surf forecast
The above surf forecast table for Hilisataro provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hilisataro can be found by selecting the local surf guide option on the grey menu. Our Hilisataro 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 (Hilisataro) 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 Hilisataro 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.
Are you planning a holiday in Nias? If you are looking for accommodation near Hilisataro, camping, hotels and holiday cottages in Nias, consider staying in Afia which is 92 km (57 miles) away.











