Surf Forecasts:
Hiliduha surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 1AM (local time) - 8ft (2.4m), 19s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 10PM (local time) - 10ft (3.0m), 17s period, SW swell with 4,607 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 7AM (local time) - 4ft (1.2m), 18s period with SSW swell.
Best Forecast Surf Conditions for Hiliduha this week:
The surf forecast for Hiliduha over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 7AM. The primary swell is predicted to be 1.2m and 18s period with a secondary swell of 1.0m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hiliduha in the next 16 days are 3.0m 17s and forecast to arrive on Wednesday (Aug 19) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 18th Aug) | 4ft (1.2m) 18s |
| Best Surf | 1AM (Wed 19th Aug) | 8ft (2.4m) 19s |
| Most Powerful | 10PM (Wed 19th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Hiliduha over the next 16 days.
The Lowdown
Righto, let’s look at what HiIiduha is serving up. This is a proper exposed reef break, advanced only, and it’s fairly consistent. We’ve got a long run of strong south-west groundswell, with periods hanging in the 15 to 18 second range – that’s long-period energy, meaning powerful, well-shaped waves with longer waits between sets. The combined energy numbers are huge, starting in the 2000s and climbing past 4000 at the peak, so that’s strong to very strong wave energy.
Water temp is about average for the season, nothing wild.
Tuesday the 18th is a dud – onshore wind, marginal, just leave it. The first real standout is Wednesday morning the 19th. Glassy calm, 0 mph wind, a 2.4m (8 ft) south-west swell with an 18-second period, and energy pumping at 3773. That’s excellent for experienced surfers – clean, powerful, long-period groundswell hitting an exposed reef. Crowds are possible here. Get in early.
Wednesday afternoon the wind switches to cross-on, swell bumps to 2.5m (8 ft), but it gets messier. Thursday the 20th and Friday the 21st stay in that 2.0m to 2.5m (7 to 8 ft) range but with cross-on breezes – not the clean gem Wednesday morning was.
Saturday the 22nd and Sunday the 23rd go straight onshore, 1.6m to 2.1m (5 to 7 ft) of slop. Skip it.
Monday the 24th and Tuesday the 25th are still marginal, light cross-on, swell dropping to 1.3m–1.8m (4 to 6 ft). Not worth a special trip.
Then we get another beauty. Wednesday morning the 26th is glassy with a 1.4m (5 ft) south-west swell, 13-second period, energy at 785 – smaller but clean, very good conditions. A solid sneaky session.
Thursday the 27th and Friday the 28th are nothing special – glassy but small.
Now for the second week. Saturday the 29th, Saturday morning, is a standout. Glassy, zero wind, a 1.4m (5 ft) south-west swell with a 19-second period – that’s a very long-period groundswell – energy jumps to 1771. Excellent for experienced surfers. Then Sunday the 30th morning is glassy again, 2.0m (7 ft), 17-second period, energy 2157 – another corker.
Monday the 31st morning holds glassy, 2.0m (7 ft), energy 2952. Then into September, Tuesday the 1st afternoon is glassy with 2.4m (8 ft) and 3005 energy – excellent. Wednesday the 2nd morning also glassy with 2.4m (8 ft), 17-second period, and the highest energy of the whole forecast at 4065. That’s massive.
The absolute best? Wednesday morning the 19th of August, and Saturday morning the 29th of August – both glassy, both powerful, long-period groundswell on an exposed reef. Crowds are possible. Paddle out early.
Rusty
Short Range ForecastModerate rain (total 18mm), heaviest on Wed night. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Thu night. Warm (max 28°C on Fri afternoon, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SSW 17 | SW 20 | SW 19 | SW 18 | SW 18 | SSW 17 | SW 16 | SSW 16 | SW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1081 | 1321 | 4192 | 3744 | 4355 | 4323 | 3319 | 2892 | 2291 | 1882 | 1809 | 2699 | 2257 | 2061 | 1525 | 1336 | 876 | 863 | 693 | 897 | 1586 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | glassy | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | on | on |
High Tide | 9:10AM0.62m | 9:53PM0.71m | 9:36AM0.53m | 10:35PM0.65m | 9:58AM0.44m | 11:29PM0.60m | 10:11AM0.37m | 00:55AM0.56m | 12:11PM0.30m | 2:40AM0.57m | 3:33PM0.32m | 3:52AM0.62m | 4:33PM0.38m | ||||||||
Low Tide | 3:06PM0.08m | 3:51AM0.23m | 3:30PM0.11m | 4:39AM0.28m | 3:57PM0.15m | 5:57AM0.33m | 4:32PM0.19m | 11:28AM0.30m | 5:37PM0.24m | 11:08AM0.25m | 7:58PM0.25m | 11:21AM0.20m | 9:33PM0.22m | ||||||||
 | |  | | |  |  | | | | |  | | |  |  | | | | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 6:36 | — | — | 6:36 | — | — | 6:36 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — |
mm | 1 | 2 | 6 | 2 | 2 | 5 | — | — | 6 | 2 | — | — | 2 | 1 | — | — | — | 2 | — | 1 | 8 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 33 | 32 | 33 | 32 | 31 | 31 | 30 | 30 | 32 | 30 | 32 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SW 19 | SW 18 | SW 18 | SSW 17 | SW 16 | SSW 16 | SW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SSW 16 | SSW 16 |
| kJ | 1081 | 1321 | 4192 | 3744 | 4355 | 4323 | 3319 | 2892 | 2291 | 1882 | 1809 | 2699 | 2257 | 2061 | 1525 | 1336 | 876 | 863 | 693 | 897 | 1586 |
Swell 2 Height (m) Direction Period (s) | SW 21 | SW 20 | W 8 | W 8 | W 8 | W 8 | W 8 | W 10 | W 9 | SSW 20 | SSW 19 | WNW 9 | WNW 8 | WNW 9 | WNW 8 | SSW 21 | SSW 20 | SSW 18 | SSW 18 | SSW 13 | WNW 8 |
| kJ | 742 | 1223 | 33 | 29 | 30 | 36 | 32 | 49 | 27 | 223 | 644 | 26 | 22 | 26 | 24 | 260 | 432 | 503 | 651 | 530 | 22 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | WNW 8 | S 9 | — | WSW 20 | — | — | — | WSW 18 | W 9 | W 9 | — | W 15 | S 26 | SSW 24 | WNW 8 | S 5 | WNW 8 | WNW 8 | WNW 8 | — |
| kJ | 277 | 35 | 40 | — | 37 | — | — | — | 30 | 39 | 40 | — | 4 | 13 | 108 | 21 | 26 | 22 | 20 | 20 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 5 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 31 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 10 | 0 | 0 | 10 | 0 | 22 | 74 | 0 | 22 | 10 | 10 | 74 | 74 | 172 | 175 | 172 | 74 | 22 | 74 | 74 |
Best forecast wave conditions in Nias | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Hiliduha Surf forecast
The above surf forecast table for Hiliduha provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hiliduha can be found by selecting the local surf guide option on the grey menu. Our Hiliduha 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 (Hiliduha) 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 Hiliduha 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 Hiliduha, camping, hotels and holiday cottages in Nias, consider staying in Afia which is 96 km (60 miles) away.
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