
Surf Forecasts:
Hilisataro surf forecast from 1 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 7AM (local time) - 3.5ft (1.1m), 17s period, SW swell with offshore winds.
- Most powerful swell: Friday 7 Aug, 10PM (local time) - 8ft (2.5m), 17s period, SSW swell with 3,592 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 10AM (local time) - 4.5ft (1.3m), 17s 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 Saturday (Aug 01) at 10AM. The primary swell is predicted to be 1.3m and 17s period with a secondary swell of 0.8m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hilisataro in the next 16 days are 2.5m 17s and forecast to arrive on Friday (Aug 07) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 5s period and expected on Thursday (Aug 06) at 10PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 1st Aug) | 4.5ft (1.3m) 17s |
| Best Surf | 7AM (Tue 4th Aug) | 3.5ft (1.1m) 17s |
| Most Powerful | 10PM (Fri 7th Aug) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Hilisataro over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what’s on the cards for the next couple of weeks. We’ve got one spot that’s the main event, and it’s looking like a solid run.
We’re kicking off with a bit of a wait, but it’s not a long one. The first real surf comes in on Saturday morning, August 1st. The swell is already building, and by the looks of things, we’re in for a treat.
Hilisataro is a reef break, and it’s the only game in town. The water is sitting at a warm 86°F, which is about what you’d expect for the time of year, nothing unusual there.
Let’s start with the opening weekend. Saturday morning, August 1st, we’ve got a 4ft southwest swell with a very long 17-second period. The wind is glassy out of the southeast at just 3 mph. The wave energy is pumping, coming in at 1262 (moderate energy). It’s going to be clean and inviting. By the afternoon, a storm risk creeps in with a cross-on wind, but the swell ticks up to 5ft.
Sunday, August 2nd, is a beauty. The morning starts with a cross-off wind from the north-northeast at 6 mph, cleaning up the 4ft southwest swell. The afternoon goes glassy again with a 3ft south-southwest swell, and the period is an incredible 18 seconds. The energy is still strong (1180). That long period will give those waves plenty of shape and power, especially on a reef setup like this.
Monday, August 3rd, keeps the good times rolling. Both morning and afternoon see a 5ft southwest swell, clean conditions with cross-off winds, and a solid 15-second period. The energy drops a bit to the 900s (moderate), but it’s still very surfable.
Now, here’s where it gets interesting. Tuesday, August 4th, the morning is a standout for the early week. The swell drops to 4ft, but the period is back to 16 seconds, and the energy jumps to 1379. Glassy cross-off winds make for a clean session. The afternoon kicks up a bit of a breeze, but the swell holds.
Wednesday, August 5th, we see the swell build to 5ft. The afternoon is the pick here, with a solid offshore wind from the north-west at 16 mph cleaning up the 5ft south-southwest swell. The energy is strong at 1693.
Thursday, August 6th, is where the real power shows up. Morning and afternoon both have a 6ft to 7ft south-southwest swell, with moderate offshore winds. The energy is getting into the 2300s (strong). This is getting into expert territory for the size, but the conditions are excellent.
Saturday, August 8th, the swell peaks at 8ft in the morning and 7ft in the afternoon, with strong offshore winds. The energy is massive, hitting 3035 in the morning. This is for the experienced crew only.
Monday, August 10th, starts to mellow out a bit, but it’s still clean with 6ft and 6ft swells.
The absolute standout is Tuesday, August 11th. The morning is a dream: 7ft south-southwest swell, a 19-second period, and completely glassy with zero wind. The energy is through the roof at 4137. The afternoon is even bigger at 8ft, still glassy, with energy at 4652. This is the best on offer, without a doubt. That long period groundswell will be a dream on this reef. It’s big, so only the experts should be out there, but the conditions are absolutely perfect.
Wednesday, August 12th, is similar, with 8ft and 7ft swells and glassy conditions. The energy is still very strong.
After the 12th, the swell starts to back off. Thursday, August 13th, and Friday, August 14th, see the size drop, but the wind stays favorable. Friday morning has a 3ft swell with a 21-second period and glassy conditions – a very long period wave that will be clean but small.
Saturday, August 15th, and Sunday, August 16th, the swell picks up again to 5ft to 6ft, but the wind turns cross-on, making it choppier. It’s not the same quality as the first week.
So, the bottom line: the first week is excellent, with the biggest and cleanest surf arriving around August 11th and 12th. Get out there early, and don’t miss that glassy Tuesday session.
Rusty.
Short Range ForecastHeavy rain (total 47mm), heaviest during Sat night. Warm (max 29°C on Sat morning, min 26°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 86mm), heaviest during Wed night. Warm (max 27°C on Tue morning, min 24°C on Wed night). Winds increasing (light winds from the WNW on Tue morning, fresh winds from the WNW by Wed afternoon). | ||||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | |||||||||||||||
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 17 | SW 17 | SW 16 | SW 16 | SSW 18 | SSW 16 | SW 15 | SW 15 | SSW 14 | SW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 18 | SSW 17 |
Wave Graph | |||||||||||||||||||||
1050 | 1172 | 1001 | 783 | 596 | 1126 | 893 | 869 | 700 | 610 | 843 | 1339 | 1001 | 1042 | 1268 | 2089 | 2002 | 1880 | 1428 | 1988 | 3269 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | cross-off | glassy | glassy | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | off | off | off | off | cross-off | cross-off | off | off |
High Tide | 8:07PM0.66m | 8:09AM0.83m | 8:40PM0.69m | 8:38AM0.79m | 9:15PM0.71m | 9:09AM0.72m | 9:55PM0.72m | 9:43AM0.64m | 10:42PM0.71m | 10:24AM0.55m | 11:43PM0.69m | 11:23AM0.45m | 1:04AM0.69m | ||||||||
Low Tide | 2:03PM0.06m | 1:44AM0.11m | 2:28PM0.05m | 2:22AM0.14m | 2:54PM0.05m | 3:01AM0.17m | 3:22PM0.06m | 3:47AM0.21m | 3:54PM0.08m | 4:44AM0.25m | 4:32PM0.11m | 6:07AM0.29m | 5:23PM0.14m | ||||||||
6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | |
— | 6:38 | — | — | 6:38 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | |
mm | 1 | 1 | 10 | 6 | 2 | 6 | 6 | 4 | 11 | 7 | 12 | 4 | 8 | 22 | 19 | 6 | 2 | 6 | 8 | 5 | 19 |
Temp °C | 29 | 29 | 28 | 28 | 27 | 27 | 28 | 28 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 27 | 26 | 26 | 27 | 26 |
Feels °C | 33 | 33 | 32 | 32 | 32 | 31 | 31 | 31 | 30 | 30 | 26 | 27 | 28 | 26 | 26 | 29 | 28 | 28 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SSW 16 | SW 15 | SW 15 | SSW 14 | W 10 | SSW 16 | W 10 | SSW 15 | SSW 15 | SW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 18 | SSW 17 |
1050 | 1172 | 1001 | 783 | 472 | 1126 | 893 | 869 | 700 | 290 | 843 | 522 | 1001 | 1042 | 1268 | 2089 | 2002 | 1880 | 1428 | 1988 | 3269 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 6 | S 7 | S 7 | SSW 18 | S 9 | S 8 | S 8 | WNW 10 | SSW 13 | SSW 13 | SSW 16 | W 10 | W 9 | W 9 | WNW 10 | S 12 | WNW 9 | SSW 19 | SSW 14 | WNW 8 |
184 | 19 | 47 | 49 | 596 | 55 | 47 | 33 | 136 | 479 | 321 | 1339 | 320 | 251 | 212 | 294 | 3 | 352 | 1222 | 854 | 94 | |
Swell 3 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 9 | SSW 19 | S 9 | WNW 9 | WNW 9 | WNW 11 | SW 18 | SW 16 | SSE 7 | S 8 | SW 22 | SW 20 | SSW 14 | S 12 | — | SSW 20 | WNW 9 | WNW 9 | — |
28 | 28 | 28 | 295 | 57 | 26 | 25 | 39 | 194 | 610 | 9 | 5 | 118 | 400 | 407 | 11 | — | 239 | 206 | 129 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 9 | — | — | — | — | — | W 10 | — | — | — | — | — | WNW 10 | — | — | — | — |
— | — | — | — | 55 | — | — | — | — | — | 753 | — | — | — | — | — | 383 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 76 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 259 | 0 | 10 | 0 | 308 | 0 | 0 | 10 | 308 | 308 | 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.











