Surf Forecasts:
Hilisataro surf forecast from 31 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 1AM (local time) - 7ft (2.1m), 18s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 1 Sep, 10AM (local time) - 7ft (2.2m), 17s period, SW swell with 2,726 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 1AM (local time) - 7ft (2.1m), 18s period with SW 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 Tuesday (Sep 01) at 1AM. The primary swell is predicted to be 2.1m and 18s period with a secondary swell of 0.8m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hilisataro in the next 16 days are 2.2m 17s and forecast to arrive on Tuesday (Sep 01) at 10AM. 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 (Tue 1st Sep) | 7ft (2.1m) 18s |
| Best Surf | 1AM (Tue 1st Sep) | 7ft (2.1m) 18s |
| Most Powerful | 10AM (Tue 1st Sep) | 7ft (2.2m) 17s |
Table - best surf conditions forecast for Hilisataro over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s have a look at what’s coming down the pipe for Hilisataro over the next couple of weeks.
First thing you need to know: the water’s sitting at 86°, which is about 1° warmer than usual for this time of year – nothing crazy, just a touch above average. It’s a reef break that works on a southwest swell, and we’ve got some real energy rolling in right from the start. The combined wave energy is a solid 1896 for Monday morning – that’s strong stuff, serious power in the water. Swell is coming from the southwest at 5 ft, with a long period of 18 seconds, pushing it deep and lined up. Offshore wind from the southeast at 6 mph is keeping things clean for the more experienced crew. This is proper groundswell – those long periods mean better shape and longer waits between sets, and at a reef setup like this, that’s what you want. Crowds are possible here, so don’t expect to have it to yourself.
By Monday afternoon, the swell bumps to 6 ft, same 18-second pulse, but there’s a risk of thunderstorms and the wind switches to onshore, so morning is definitely the window. The energy stays high at 2168.
Tuesday morning sees the swell building to 7 ft with a 17-second period, energy surging to 2883. That’s pushing into expert-only territory – over 8 ft would be too much for most, but at 7 ft with light offshore wind, it’s still game for the experienced surfer. By afternoon, the wind goes cross-onshore and the quality drops.
Now, here’s where it gets interesting. Wednesday the 2nd of September morning – this is the standout. Swell sits at a solid 6 ft from the southwest, 16-second period, and the wind goes glassy. Nothing but clean lines. The energy is at 1651, which is still strong, and the conditions are described as excellent for experienced surfers. This is the call for the week. The afternoon gets a bit jumbled with cross-shore wind, so get it early.
Thursday the 3rd sees the swell dropping to 5 ft to 4 ft, but the wind stays cross-offshore and clean. It’s smaller, but still fun for a reef break with that long-period swell. Friday the 4th is smaller again, down to 4 ft to 4 ft, and mostly onshore or glassy with very weak wind. The energy drops below 700, so it’s weaker but still glassy on the Friday afternoon.
Saturday the 5th and Sunday the 6th are weaker – swell drops to 3 ft to 4 ft, mostly onshore or cross-onshore wind. Energy is in the 600 to 1000 range, so nothing to get excited about. Monday the 7th is glassy again but only 4 ft – clean but small.
Now, here’s the second real standout: Wednesday the 9th of September morning. Swell jumps back up to 5 ft from the south-southwest, 16-second period, with glassy conditions. The energy is 1295 – solid, not the biggest, but the wind is dead calm. By the afternoon, it gets even better: 6 ft, 15-second period, and offshore wind from the west-northwest. That’s excellent stuff for experienced surfers.
Thursday the 10th keeps the party going – 6 ft, 16-second swell, glassy in the morning, clean cross-off in the afternoon. Energy sits around 1400. That’s two days in a row of quality.
Things get messy from Friday the 11th onwards – onshore winds and marginal conditions. The swell hangs around 5 ft to 6 ft but the wind is onshore or cross-onshore, so it’s a pass. The energy is still strong, around 1800 to 2500, but the wind ruins it.
There’s a bit of a comeback Monday the 14th with 6 ft and a long 18-second period, but again, onshore wind. Tuesday the 15th is the same story – energy is there, but the wind is cross-onshore. If you’re desperate and the wind shifts, maybe, but I wouldn’t bank on it.
Best on offer: Wednesday morning 2nd September for the glassy 6 ft southwest groundswell. Second pick: Wednesday 9th and Thursday 10th September for the clean, offshore conditions and consistent 5 ft to 6 ft swell.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Wed night. Warm (max 28°C on Mon morning, min 26°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Thu night. Warm (max 29°C on Thu morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SW 13 | SSW 13 | SSW 13 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 17 |
Wave Graph | |||||||||||||||||||||
1610 | 1901 | 2557 | 2726 | 2247 | 2017 | 1571 | 1314 | 1194 | 868 | 746 | 810 | 599 | 501 | 351 | 362 | 355 | 717 | 788 | 674 | 890 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | on | cross-on | cross-on | glassy | cross | glassy | cross-off | cross-off | cross-off | cross-on | glassy | glassy | on | cross-on | on | on | cross | on |
High Tide | 8:09PM0.81m | 8:11AM0.74m | 8:43PM0.81m | 8:43AM0.66m | 9:22PM0.79m | 9:17AM0.57m | 10:10PM0.75m | 9:57AM0.48m | 11:13PM0.70m | 11:01AM0.39m | 00:46AM0.67m | 1:23PM0.34m | 2:30AM0.70m | ||||||||
Low Tide | 1:48PM0.01m | 2:08AM0.09m | 2:13PM0.01m | 2:47AM0.12m | 2:41PM0.03m | 3:31AM0.17m | 3:12PM0.06m | 4:28AM0.23m | 3:48PM0.11m | 6:01AM0.28m | 4:39PM0.17m | 9:00AM0.27m | 6:19PM0.23m | ||||||||
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | |
mm | — | 2 | 3 | — | 1 | 2 | — | 2 | 9 | — | 1 | 9 | — | — | — | — | 1 | 7 | — | 2 | 4 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 29 | 28 | 27 | 27 | 28 | 27 | 29 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 31 | 32 | 32 | 32 | 33 | 31 | 31 | 33 | 31 | 30 | 31 | 33 | 31 | 32 | 31 | 31 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 17 |
1610 | 1901 | 2557 | 2726 | 2247 | 2017 | 1571 | 1314 | 1194 | 868 | 746 | 810 | 599 | 501 | 351 | 362 | 345 | 717 | 788 | 674 | 890 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 11 | S 11 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 | SSW 17 | SSW 17 | S 9 | S 9 | S 9 | S 9 |
214 | 217 | 144 | 143 | 83 | 76 | 68 | 68 | 66 | 63 | 45 | 45 | 44 | 41 | 27 | 267 | 355 | 106 | 157 | 153 | 150 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 12 | WNW 9 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SSW 16 | S 8 | WNW 8 | WNW 7 | WNW 7 | S 20 | WNW 7 |
72 | 50 | 15 | 14 | 15 | 13 | 12 | 12 | 13 | 11 | 11 | 13 | 11 | 12 | 107 | 30 | 11 | 10 | 5 | 194 | 5 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 3 | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 167 | 0 | 26 | 76 | 26 | 0 | 76 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 26 | 76 | 26 | 26 | 167 | 26 |
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.











