Surf Forecasts:
Hideaways (Mentawi Islands) surf forecast from 21 Aug 2026:
- Best quality surf: Saturday 22 Aug, 4AM (local time) - 8ft (2.4m), 16s period, SSW swell with offshore winds.
- Most powerful swell: Monday 24 Aug, 1AM (local time) - 7ft (2.2m), 18s period, SSW swell with 2,897 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 4AM (local time) - 8ft (2.4m), 16s period with SSW swell.
Best Forecast Surf Conditions for Hideaways (Mentawi Islands) this week:
The surf forecast for Hideaways (Mentawi Islands) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 22) at 4AM. The primary swell is predicted to be 2.4m and 16s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Hideaways (Mentawi Islands) in the next 16 days are 2.2m 18s and forecast to arrive on Monday (Aug 24) at 1AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 18s period and expected on Monday (Aug 24) at 4AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 22nd Aug) | 8ft (2.4m) 16s |
| Best Surf | 4AM (Sat 22nd Aug) | 8ft (2.4m) 16s |
| Most Powerful | 1AM (Mon 24th Aug) | 7ft (2.2m) 18s |
Table - best surf conditions forecast for Hideaways (Mentawi Islands) over the next 16 days.
The Lowdown
Alright, Rusty here, checking in from the Mentawai Islands. Let’s break down the surf.
We’ve got a solid run of swell on the horizon. It’s not a one-day wonder, but a proper, drawn-out pulse of groundswell that will keep things interesting for the next couple of weeks. The water is at 85°F which is about average for this time of year, so no major surprises there.
The standout session of the whole forecast is shaping up for Saturday, August 22nd, on the morning session. Hideaways (Mentawi Islands) will be absolutely pumping. We’re looking at a 8ft SSW swell with a 16-second period from a groundswell, and the wind is going to be a clean, gentle offshore from the SE. That’s a recipe for perfection. The wave energy is cranking at 2793, so you know there’s plenty of push. This is a setup for experienced surfers, though, and it can get crowded in the water, so be prepared to compete for the best waves.
From there, the quality holds. Sunday, August 24th, in the morning is another highlight. The swell drops slightly to 4ft, but the period is still a juicy 16 seconds, and again we have a gentle offshore breeze from the SSE. It’s a bit smaller, but it’ll be just as clean and a bit more manageable for the intermediate crowd. Wave energy is 1396, which is still very solid.
The forecast gets a bit more interesting in the second week. For Monday, August 31st, the afternoon session is looking exceptionally clean with glassy conditions and a 6ft SSW swell, period 17 seconds. The energy is a hefty 1900. Then, the following morning, Tuesday, September 1st, is the biggest swell of the entire run: an 8ft SW swell, 18-second period, and light offshore winds. That’s a serious, powerful groundswell. The energy is a massive 3927. This is experts-only territory, and it will be a long, clean paddle out between sets. The wave shape will be top-notch for the reef.
Overall, the first week is the most reliable, with the 22nd of August being the absolute peak. The second week has some serious potential, especially the 1st of September, but long-range forecasts are always a little less certain. Don’t sleep on the morning of the 31st of August either, as it’s glassy and clean.
Signing off, Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sun night. Warm (max 29°C on Sat afternoon, min 27°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 33mm), heaviest during Mon night. Warm (max 28°C on Mon afternoon, min 26°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 19 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SW 16 | SW 15 | SSW 18 | SSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1950 | 2931 | 2793 | 2140 | 1667 | 1038 | 949 | 2897 | 705 | 0 | 1728 | 1258 | 1072 | 814 | 669 | 617 | 565 | 894 | 2363 | 2541 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | off | off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | cross-off | off |
High Tide | 1:11AM0.83m | 1:42PM0.47m | 2:40AM0.84m | 3:35PM0.50m | 3:50AM0.89m | 4:38PM0.57m | 4:41AM0.96m | 5:20PM0.66m | 5:22AM1.04m | 5:55PM0.75m | 5:56AM1.10m | 6:25PM0.85m | ||||||||
Low Tide | 5:08PM0.27m | 7:39AM0.44m | 6:07PM0.33m | 11:09AM0.38m | 7:37PM0.37m | 11:22AM0.31m | 9:14PM0.35m | 11:36AM0.25m | 10:20PM0.29m | 11:54AM0.19m | 11:09PM0.23m | 12:15PM0.13m | 11:50PM0.17m | |||||||
 |  |  | | | |  | | | | | | | | | | | | |  | |
 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — |
 | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:25 | — | — | 6:25 | — |
mm | 1 | 2 | — | — | 5 | 2 | — | 7 | 4 | 2 | 13 | 3 | 1 | 2 | 1 | 3 | 7 | 1 | 1 | — |
Temp °C | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 30 | 31 | 30 | 31 | 31 | 30 | 30 | 31 | 29 | 30 | 28 | 30 | 29 | 29 | 30 | 29 | 30 | 30 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 13 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SW 16 | SW 15 | SSW 18 | SSW 16 |
| kJ | 1950 | 2931 | 2793 | 2140 | 1667 | 1038 | 1367 | 2897 | 595 | 2339 | 1728 | 1258 | 1072 | 814 | 669 | 617 | 565 | 773 | 2363 | 2541 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | WNW 10 | WNW 9 | WNW 9 | S 18 | SSW 19 | SSW 19 | S 18 | SSW 16 | WNW 10 | WNW 10 | WNW 9 | W 9 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | SSW 19 | SSE 8 | S 7 |
| kJ | 1106 | 10 | 9 | 7 | 225 | 627 | 949 | 759 | 705 | 10 | 10 | 8 | 2 | 73 | 89 | 85 | 109 | 894 | 75 | 39 |
Swell 3 Height (m) Direction Period (s) | WNW 11 | W 16 | — | SSW 24 | SSW 22 | WNW 8 | SSW 16 | — | SW 19 | WNW 10 | W 8 | — | — | NW 8 | SW 18 | WNW 8 | SSW 12 | SSE 8 | SSE 8 | — |
| kJ | 22 | 5 | — | 55 | 265 | 7 | 50 | — | 96 | 10 | 1 | — | — | 3 | 83 | 6 | 255 | 101 | 60 | — |
Wind waves Height (m) Direction Period (s) | SSE 5 | SSE 4 | — | — | — | SSE 6 | — | — | SSE 5 | SSE 7 | S 7 | S 7 | SSE 7 | — | — | — | — | — | — | — |
| kJ | 13 | 20 | — | — | — | 103 | — | — | 72 | 132 | 109 | 124 | 86 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 383 | 0 | 0 | 383 | 0 | 0 | 383 | 0 | 0 | 482 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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Information about the Hideaways (Mentawi Islands) Surf forecast
The above surf forecast table for Hideaways (Mentawi Islands) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hideaways (Mentawi Islands) can be found by selecting the local surf guide option on the grey menu. Our Hideaways (Mentawi Islands) 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 (Hideaways (Mentawi Islands)) 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 Hideaways (Mentawi Islands) 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.
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