Surf Forecasts:
Hideaways (Mentawi Islands) surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 7PM (local time) - 6ft (1.9m), 19s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 1PM (local time) - 10ft (3.0m), 18s period, SSW swell with 5,454 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 1AM (local time) - 2.5ft (0.8m), 16s period with SW 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 Sunday (Aug 16) at 1AM. The primary swell is predicted to be 0.8m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Hideaways (Mentawi Islands) in the next 16 days are 3.0m 18s and forecast to arrive on Wednesday (Aug 19) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 15s period and expected on Sunday (Aug 16) at 1AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 16th Aug) | 2.5ft (0.8m) 16s |
| Best Surf | 7PM (Tue 18th Aug) | 6ft (1.9m) 19s |
| Most Powerful | 1PM (Wed 19th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Hideaways (Mentawi Islands) over the next 16 days.
The Lowdown
Alright, this is Rusty, looking at the long-range forecast for you.
We've got a bit of a slow start, with the first few days offering nothing but small, weak dribble. But hang tight, because from Tuesday the 18th, we're looking at a solid push of swell that should get everyone's attention.
The main event is clearly Hideaways (Mentawi Islands). This consistent reef break is about to get a big slug of SSW groundswell, which is exactly what it wants. The water temperature is a warm 30°, which is about average for this time of year. The real action kicks off on Tuesday morning, the 18th, with a 8ft SSW groundswell. The combined energy is a solid 2787 (moderate wave energy), and we have a moderate offshore wind. That means clean, powerful lines.
The absolute standout is Wednesday the 19th. Both morning and afternoon are looking prime. We're talking a 10ft SSW groundswell, with an 18-second period, and the combined energy is massive at 4979 and 5382 (strong to very strong wave energy). The winds are light and cross-offshore, keeping the faces perfect. This is expert level stuff – not for beginners.
The quality continues through the rest of the week. Saturday the 22nd morning has another great pulse, with 8ft SSW swell, a moderate offshore breeze, and energy at 2830. There's a lull in the middle of the second week, but the run finishes strong. Sunday, the 30th of August, is a promising long-range call, with 8ft of clean SW groundswell, light winds, and a combined energy of 4185.
Keep in mind, Hideaways is a reef that can get crowded, so expect some company when the waves are on. Those long-period groundswells will have a lot of punch, perfect for the reef, but you'll need to be on your toes.
So, the first few days are a wash. Wednesday the 19th is the one to circle on your calendar, with a possible bonus on Sunday the 30th. Get after it.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Warm (max 28°C on Sat afternoon, min 27°C on Sat afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Warm (max 28°C on Tue afternoon, min 27°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 15 | SW 16 | SW 15 | SW 15 | SSW 14 | SW 24 | SW 24 | SW 21 | SSW 16 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 344 | 295 | 266 | 212 | 508 | 142 | 214 | 898 | 2787 | 2067 | 5273 | 4933 | 5331 | 5029 | 3957 | 3152 | 2486 | 2069 | 1716 | 3100 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | glassy | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | off | off |
High Tide | 8:20PM1.08m | 8:28AM1.13m | 8:58PM1.10m | 9:02AM1.01m | 9:36PM1.08m | 9:35AM0.89m | 10:15PM1.03m | 10:06AM0.76m | 10:58PM0.96m | 10:35AM0.64m | 11:52PM0.88m | 11:12AM0.54m | 1:11AM0.83m | |||||||
Low Tide | 2:08AM0.08m | 2:30PM0.02m | 2:49AM0.13m | 2:58PM0.05m | 3:29AM0.20m | 3:26PM0.10m | 4:10AM0.27m | 3:55PM0.15m | 4:56AM0.34m | 4:28PM0.21m | 5:55AM0.41m | 5:08PM0.27m | ||||||||
 |  | | |  |  | | | | |  | | | |  | | | | |  | |
 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — |
 | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:27 | — |
mm | — | 1 | — | — | 1 | — | — | 1 | — | — | — | — | — | 2 | 1 | 2 | — | — | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 30 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 29 | 30 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 31 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 15 | S 15 | S 15 | SSW 14 | SSW 14 | SSW 14 | S 13 | SSW 16 | SSW 16 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 |
| kJ | 986 | 1344 | 993 | 435 | 508 | 834 | 674 | 600 | 2787 | 1397 | 5273 | 4933 | 5331 | 5029 | 3957 | 3152 | 2486 | 2069 | 1716 | 3100 |
Swell 2 Height (m) Direction Period (s) | S 16 | SW 16 | SW 15 | S 10 | SSE 9 | SW 24 | SSW 19 | SSW 18 | WNW 8 | SSW 19 | WSW 8 | — | WNW 10 | WNW 10 | WNW 10 | WNW 11 | WNW 10 | SSW 20 | SSW 18 | WNW 10 |
| kJ | 438 | 295 | 266 | 184 | 126 | 142 | 214 | 705 | 14 | 2067 | 13 | — | 10 | 20 | 20 | 22 | 22 | 634 | 1317 | 10 |
Swell 3 Height (m) Direction Period (s) | SW 15 | WNW 10 | WNW 9 | SW 15 | WNW 9 | SSW 19 | SW 24 | SW 21 | WNW 8 | SSE 9 | W 10 | — | — | — | — | — | S 22 | WNW 11 | WNW 11 | W 16 |
| kJ | 344 | 10 | 17 | 212 | 15 | 72 | 142 | 898 | 7 | 92 | 8 | — | — | — | — | — | 37 | 11 | 11 | 5 |
Wind waves Height (m) Direction Period (s) | SSE 6 | — | — | — | — | — | SSE 11 | — | SSE 10 | — | — | SW 10 | SW 10 | SW 10 | SW 10 | SSE 4 | SSE 5 | SSE 5 | — | SSE 3 |
| kJ | 40 | — | — | — | — | — | 161 | — | 135 | — | — | 46 | 51 | 36 | 26 | 22 | 28 | 20 | — | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 33 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 108 | 0 | 0 | 0 | 108 | 0 | 383 | 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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