Surf Forecasts:
Gilligans surf forecast from 23 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 10PM (local time) - 3.5ft (1.1m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 1AM (local time) - 7ft (2.2m), 18s period, SSW swell with 2,864 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 1AM (local time) - 5ft (1.5m), 14s period with SSW swell.
Best Forecast Surf Conditions for Gilligans this week:
The surf forecast for Gilligans over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 1AM. The primary swell is predicted to be 1.5m and 14s period with a secondary swell of 0.2m and 9s. Another secondary swell of 1.0m and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Gilligans in the next 16 days are 2.2m 18s and forecast to arrive on Monday (Aug 24) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 26th Aug) | 5ft (1.5m) 14s |
| Best Surf | 10PM (Wed 26th Aug) | 3.5ft (1.1m) 16s |
| Most Powerful | 1AM (Mon 24th Aug) | 7ft (2.2m) 18s |
Table - best surf conditions forecast for Gilligans over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming our way.
Alright mate, we’ve got a bit of a mixed bag coming up at Gilligans. The overall pattern is that there’s always some swell, but the wind and conditions are often not playing ball. The water temp is sitting at 85°F, with a water temp anomaly of 0.9°F, so it’s pretty much average for this time of year. The combined energy is mostly moderate to strong, with readings like 2005 on the first Sunday.
Sunday the 23rd kicks it off, but honestly, it’s not great. We’ve got a 6ft SSW swell, with a period of 14 seconds, but the wind is a moderate cross-shore breeze from the SE at 12 mph, bringing a cross-chop. The morning is a better bet than the afternoon when the wind gets up to 16 mph. The wave comment calls it marginal, so keep your expectations low.
Monday the 24th is more of the same, with the swell holding around 6ft to 6ft, but the wind is still cross or cross-onshore and the forecast is still marginal.
Now, the standout window starts to show itself. Wednesday the 26th morning sees the swell drop a touch to 5ft from the SSW with a 13-second period. The wind switches to a light cross-offshore breeze from the ESE at 6 mph, and the conditions are described as clean. This is the first time the setup looks decent. The combined energy is moderate at 875, but the clean conditions make it feel better than it sounds.
The real gem is Thursday the 27th morning. This is the best on offer. We’ve got a 4ft SSW groundswell, but the period is a very long 19 seconds. That’s going to bring in plenty of energy, with a combined swell energy of 2117. The wind is glassy – literally 3 mph from the SE – and the wave comment says excellent for experienced surfers. Because it’s a longer period groundswell, it might break a bit straight on the beach, but the glassy wind will make it look perfect. This is the morning to be out there.
Thursday afternoon the swell jumps to 7ft, but the wind goes cross at 9 mph, and it’s back to being marginal. Still, for the bigger-wave crew, that afternoon might have some sets, but the morning is the pick.
After Thursday, the swell slowly drops, but the wind stays in a cross or light cross direction for much of the following week, with the occasional slightly better window. For example, the morning of Monday the 31st has a 6ft SW swell with a 6 mph cross breeze, and Tuesday the 1st of September sees the swell build back to 8ft, but the wind is a gentle cross-shore breeze.
Later in the window, around Saturday the 5th of September, the swell drops to 4ft, but it’s a long-period 17-second S swell. The combined energy is still moderate at 1424, but the wind is a light cross-shore, so it could be fun for a log. Sunday the 6th sees a drop in quality, with choppy conditions.
So, overall, the standout is absolutely Thursday the 27th morning. Glassy conditions and a long-period groundswell at a modest 4ft. Get out there if you can. Wednesday the 26th morning is a solid backup for cleaner waves. The rest of the window is a bit of a grind with marginal conditions.
Rusty
Short Range ForecastHeavy rain (total 39mm), heaviest during Tue morning. Warm (max 28°C on Sun morning, min 26°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 34mm), heaviest during Wed morning. Warm (max 27°C on Wed morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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 14 | SSW 14 | SSW 18 | S 14 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SW 16 | SSW 19 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 |
Wave Graph | |||||||||||||||||||||
1023 | 994 | 2864 | 1065 | 1772 | 1258 | 1225 | 1057 | 791 | 669 | 382 | 477 | 1147 | 2734 | 2480 | 1880 | 1332 | 961 | 774 | 617 | 472 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross | cross | cross-off | cross-off | cross-on | cross-off | glassy | cross | cross-on | cross | cross | cross | cross | cross-on | cross |
High Tide | 3:22PM0.39m | 3:34AM0.77m | 4:33PM0.45m | 4:26AM0.83m | 5:13PM0.53m | 5:07AM0.89m | 5:45PM0.62m | 5:41AM0.95m | 6:14PM0.71m | 6:12AM0.98m | 6:42PM0.79m | 6:42AM0.99m | 7:11PM0.87m | ||||||||
Low Tide | 7:27PM0.32m | 11:14AM0.24m | 9:15PM0.30m | 11:35AM0.19m | 10:19PM0.26m | 11:56AM0.15m | 11:06PM0.22m | 12:17PM0.10m | 11:46PM0.17m | 12:39PM0.07m | 00:24AM0.14m | 1:02PM0.04m | 1:01AM0.11m | ||||||||
6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | |
— | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | |
mm | 1 | — | 1 | 3 | 2 | 8 | 8 | 5 | 11 | 5 | 3 | 9 | 4 | 3 | — | 2 | 2 | 6 | 2 | 3 | 9 |
Temp °C | 28 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 26 |
Feels °C | 28 | 28 | 28 | 28 | 29 | 28 | 29 | 29 | 29 | 31 | 30 | 30 | 31 | 28 | 28 | 28 | 28 | 29 | 30 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 18 | S 14 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SW 16 | SW 15 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 |
1023 | 994 | 2864 | 1065 | 1772 | 1258 | 1225 | 1057 | 791 | 669 | 382 | 477 | 773 | 2734 | 2480 | 1880 | 1332 | 961 | 774 | 617 | 472 | |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SSW 19 | — | SSW 16 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | SW 18 | SSW 16 | SSW 12 | SSW 19 | SSE 8 | — | WNW 11 | SSE 7 | SSE 7 | S 8 | S 8 | S 8 |
804 | 772 | — | 696 | 10 | 10 | 9 | 8 | 7 | 82 | 326 | 264 | 1147 | 256 | — | 12 | 111 | 91 | 72 | 72 | 98 | |
Swell 3 Height (m) Direction Period (s) | SSW 16 | WNW 8 | — | SW 19 | — | — | NW 8 | — | W 16 | WNW 9 | WNW 8 | SSW 21 | WNW 8 | — | — | — | S 20 | SSW 18 | WNW 10 | WNW 9 | SSW 20 |
85 | 7 | — | 170 | — | — | 2 | — | 5 | 7 | 7 | 404 | 6 | — | — | — | 30 | 62 | 9 | 8 | 160 | |
Wind waves Height (m) Direction Period (s) | SSE 7 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | S 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | S 8 | S 8 | SSE 7 | SSE 7 | — | — | — | — |
93 | 90 | 142 | 180 | 96 | 106 | 108 | 114 | 117 | 117 | 117 | 163 | 191 | 196 | 160 | 114 | 155 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 138 | 566 | 138 | 138 | 33 | 5 | 5 | 33 | 0 | 0 | 21 | 0 | 0 | 5 | 138 | 33 | 104 | 5 | 5 | 21 | 5 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Gilligans Surf forecast
The above surf forecast table for Gilligans provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Gilligans can be found by selecting the local surf guide option on the grey menu. Our Gilligans 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 (Gilligans) 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 Gilligans 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 Mentawi Islands? If you are looking for accommodation near Gilligans, camping, hotels and holiday cottages in Mentawi Islands, consider staying in Sungaipenuh which is 173 km (107 miles) away.











