Hilisataro Surf Break

Lat Long: 0.62° N 97.87° E

Hilisataro Surf Forecast and Surf Report

Issued: 6 am 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Hilisataro sea temperature is
29.8° C
0.6° 

Hilisataro surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Hilisataro surf forecast from 13 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 7PM (local time) - 3.5ft (1.1m), 18s period, SSW swell with glassy winds.
  • Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 8ft (2.5m), 18s period, SSW swell with 4,130 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 4PM (local time) - 4.5ft (1.4m), 12s period with S 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 Thursday (Aug 13) at 4PM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.9m and 18s. 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 18s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Thu 13th Aug)4.5ft (1.4m) 12s
Best Surf 7PM (Thu 13th Aug)3.5ft (1.1m) 18s
Most Powerful 7PM (Wed 19th Aug)8ft (2.5m) 18s

Table - best surf conditions forecast for Hilisataro over the next 16 days.


The Lowdown

Alright, mate, Rusty here. Let’s chew the fat on what’s shaping up for the next couple of weeks.

The first few days are offering up some clean but not overly powerful surf, with the real juice building later. Water temp is sitting at 86°F, which is about average for this time of year, so no surprises there.

We start on Thursday, 13th August with some 5ft south swell, 13-second period. The morning's a bit messy with a cross-on breeze, but Thursday afternoon cleans right up – glassy conditions come in, and the 5ft swell from the south (12-second period) will feel clean. It’s not a monster, but with light wind and the moderate wave energy (1312), it’s a nice, cruisy session.

Friday the 14th sees a little more push, with 6ft swell from the south-southwest, and a long 16-second period. The morning is cross-on again, but Friday afternoon the wind swings to a light cross-off, cleaning things up. This is where the quality bumps up – proper groundswell lines with good energy (1610).

Saturday the 15th is another solid call. The swell drops back a touch to 5ft from the south, 14-second period, but the real story is the wind. Saturday morning is a light cross, but Saturday afternoon goes glassy again. That 5ft south swell with a 13-second period and glassy surface? That’s going to be smooth.

Now, the standout window: Saturday, 22nd August. This is the one to circle. The swell builds to 7ft from the south-southwest, a solid 16-second period, and we’ve got glass – zero wind in the morning, zero wind in the afternoon. The combined swell energy reads 2409, which is strong, but with the wind dead calm, Hilisataro reef will be firing. That’s a long-period groundswell hitting a reef setup, which is exactly what you want. It’s for advanced surfers at that size, but if you’ve got the skills, this is the best day of the period.

Sunday, 23rd August also looks great – 6ft south-southwest swell, 14 seconds, and again, glass – no wind at all. The energy is moderate (1249) and the conditions will be clean as a whistle.

Friday, 21st August morning is worth a mention too – 6ft south-west swell, 15 seconds, with glassy conditions in the morning. That’s going to be a really good, clean session before the weekend’s main event.

There’s a little slump around the 25th and 26th, with smaller swell and more onshore wind, but nothing terrible. A few days of small, weak surf before the next pulse.

The last real highlight is Thursday, 27th August morning – 6ft south-southwest swell, 15-second period, glassy. That’s a nice long-range possibility, though a bit less certain.

So overall, we’ve got a solid run of clean surf, with the 22nd and 23rd being the true standouts. Patchy crowds are possible at Hilisataro, but with conditions that good, it’ll be worth it.

Rusty.

Short Range Forecast

Heavy rain (total 35mm), heaviest during Thu night. Warm (max 27°C on Thu morning, min 24°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 12mm), heaviest on Mon night. Warm (max 28°C on Sun morning, min 26°C on Sun night). Wind will be generally light.

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
4
2
4
4
3
3
3
3
2
1
1
0
2
3
2
3
3
4
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
S
13
1.4
S
12
1.6
SSW
17
1.7
SSW
16
1.7
SSW
16
1.8
SSW
15
1.4
S
14
1.4
S
13
1.2
S
13
1.3
S
16
1.1
S
15
0.9
SW
15
0.8
SW
14
1.1
SSW
14
0.9
SW
18
1.4
SW
17
1.5
SW
19
2.3
SW
19
2.4
SW
18
2.5
SW
18
2.5
SW
17
Wave Graph
Metric surfscale
Energy kJ
643
603
1384
1482
1358
1441
769
694
480
847
510
309
297
472
449
1151
1609
3759
3460
3913
3695
Wind (km/h)
10
SSW
5
WSW
5
NNW
10
S
10
WNW
10
NNE
10
NE
5
WNW
0
W
5
ENE
5
SSE
5
SSW
10
E
10
SSE
5
SE
10
SE
10
SSE
10
S
10
SE
10
S
5
SSE
Wind State
cross-on
glassy
cross-off
cross-on
cross-off
cross-off
cross
glassy
glassy
glassy
on
cross
cross-on
on
on
on
on
cross-on
on
cross-on
cross-on
High Tide
6:49PM0.67m
7:03AM0.94m
7:28PM0.73m
7:39AM0.90m
8:06PM0.77m
8:13AM0.83m
8:42PM0.78m
8:45AM0.74m
9:19PM0.76m
9:14AM0.64m
9:56PM0.72m
9:40AM0.55m
10:38PM0.67m
Low Tide
1:01PM0.02m
00:32AM0.04m
1:30PM0.01m
1:15AM0.05m
1:56PM0.02m
1:55AM0.08m
2:21PM0.03m
2:34AM0.12m
2:44PM0.06m
3:12AM0.17m
3:08PM0.08m
3:51AM0.23m
3:32PM0.11m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
thunderstorm
cloud
part cloud
rain showers
clear
thunderstorm
thunderstorm
part cloud
clear
rain showers
thunderstorm
part cloud
thunderstorm
part cloud
cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:28
6:28
6:28
6:28
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:37
6:37
6:36
6:36
6:36
6:36
 mm
5
6
17
2
1
2
2
1
3
4
1
3
2
Temp °C
27
27
26
25
25
25
26
26
26
28
28
27
28
28
27
27
28
27
28
28
27
Feels °C
31
31
30
28
28
28
30
30
29
31
32
31
31
31
31
31
31
31
32
31
31
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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