
Surf Forecasts:
Gilligans surf forecast from 7 Sep 2026:
- Best quality surf: Saturday 12 Sep, 4AM (local time) - 3.5ft (1.1m), 21s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 12 Sep, 10PM (local time) - 8ft (2.4m), 18s period, SW swell with 3,764 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 4AM (local time) - 3.5ft (1.1m), 21s period with SW 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 Saturday (Sep 12) at 4AM. The primary swell is predicted to be 1.1m and 21s period with a secondary swell of 1.4m and 15s. Another secondary swell of 0.9m and 9s 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 2.4m 18s and forecast to arrive on Saturday (Sep 12) at 10PM. 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+) | 4AM (Sat 12th Sep) | 3.5ft (1.1m) 21s |
| Best Surf | 4AM (Sat 12th Sep) | 3.5ft (1.1m) 21s |
| Most Powerful | 10PM (Sat 12th Sep) | 8ft (2.4m) 18s |
Table - best surf conditions forecast for Gilligans over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’ve got the straight-up word on the surf for this spot for the next couple of weeks.
Right off the bat, the opening days are a bit of a letdown, I gotta be honest. The swell is there, but the wind is just cross all day and the conditions are choppy. It’s not a total flat spell, just a frustrating one. We’re looking at a solid run of swell from the 7th of September through the 11th, but the quality is poor. It’s not until Saturday morning the 12th that things start to come together. The water temp is sitting at 85°, which is pretty much what you’d expect for this time of year.
So, let’s talk about the real gem in this whole forecast. The standout is Saturday the 12th, early morning at Gilligans. We’ve got a clean 6 ft of south-west groundswell rolling in, with a proper long period of 19 seconds – that’s a lot of energy in the water (combined swell energy of 2940). The wind is an off-shore/cross-off light breeze, meaning it’s going to be clean, and the report even says excellent conditions for experienced surfers. For this reef break, a south-west swell is spot on. It’s a very consistent break, and with a solid long-period groundswell like that, paddling out between sets will be manageable.
Now, that long period is a double-edged sword. It’s got heaps of power and shape, but at a beach break, it can make waves close out a bit too straight. Since Gilligans is a reef, this swell will handle beautifully. Crowds are listed as “sometimes,” so you can expect a few other keen surfers there for sure.
Looking further out, we’ve got another window that looks promising but less certain. The weekend of the 19th of September is something to watch. The morning of Saturday the 19th has a 6 ft south-west swell with near-calm offshore winds, and the afternoon is a full-blown glass-off – 7 ft of south-west swell with a 15-second period, glassy wind, and the water will be like a mirror. That is an absolute dream scenario for an evening session. The energy is solid at 1764. Then the 17th of September morning also shows some clean lines with a light offshore, but the swell is a touch smaller.
A word of caution: once we get into the second week, around the 20th, the swell jumps up to 8 ft and the wind turns cross-onshore and choppy. That’s a proper shralping, maybe one for the experts, but the quality drops off hard. Anything over 8 ft here with onshore wind is going to be a mess.
So, in short: the first week is a washout from the 7th to the 11th. Your absolute best bet is Saturday the 12th morning. After that, keep an eye on the 17th, and then the 19th afternoon looks like the real magic window if the forecast holds.
Stay stoked.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Tue morning. Warm (max 28°C on Tue afternoon, min 26°C on Mon afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 68mm), heaviest during Fri night. Warm (max 28°C on Thu afternoon, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 13 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | S 15 | S 15 | SSW 14 | SSW 16 | SSW 17 | SSW 16 | SSW 15 | SW 15 | SW 21 | SW 19 | SW 19 | SW 18 | SW 16 | SW 16 | SW 15 |
Wave Graph | ||||||||||||||||||||
402 | 431 | 1086 | 1444 | 1447 | 1959 | 1709 | 602 | 1354 | 1734 | 1498 | 1238 | 1059 | 1610 | 2118 | 3072 | 3519 | 3128 | 2742 | 1812 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross |
High Tide | 3:29AM0.92m | 4:24PM0.58m | 4:29AM0.98m | 5:11PM0.71m | 5:18AM1.01m | 5:51PM0.83m | 6:00AM1.02m | 6:28PM0.93m | 6:38AM0.99m | 7:03PM0.99m | 7:13AM0.93m | 7:37PM1.03m | ||||||||
Low Tide | 8:17PM0.27m | 10:43AM0.15m | 9:50PM0.23m | 11:21AM0.09m | 10:53PM0.16m | 11:53AM0.05m | 11:44PM0.11m | 12:22PM0.03m | 00:29AM0.07m | 12:49PM0.02m | 1:10AM0.06m | 1:15PM0.02m | 1:48AM0.07m | |||||||
— | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:20 | — | — | 6:19 | — | — | 6:19 | — | — | 6:19 | — | — | 6:19 | — | — | 6:17 | — | — | 6:17 | — | |
mm | — | — | 1 | 1 | — | — | — | — | 1 | 2 | 5 | 10 | 13 | 26 | 1 | 5 | 4 | 2 | 1 | 5 |
Temp °C | 27 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 27 |
Feels °C | 26 | 27 | 28 | 29 | 28 | 28 | 29 | 29 | 28 | 29 | 28 | 29 | 28 | 29 | 30 | 29 | 26 | 27 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 18 | SSW 17 | SSW 16 | S 15 | S 15 | SSE 10 | SSW 16 | SSW 17 | SSW 16 | SSW 15 | SW 15 | SW 14 | SW 19 | SW 19 | SW 18 | SW 16 | SW 16 | SW 15 |
402 | 326 | 1086 | 1444 | 1447 | 1959 | 1709 | 394 | 1354 | 1734 | 1498 | 1238 | 1059 | 928 | 2118 | 3072 | 3519 | 3128 | 2742 | 1812 | |
Swell 2 Height (m) Direction Period (s) | SSW 20 | SSW 18 | SSW 12 | SSW 12 | S 14 | SSE 13 | S 13 | SSW 14 | W 16 | W 11 | S 10 | SW 24 | SSE 10 | SW 21 | SW 14 | SW 14 | SSE 9 | W 19 | SSE 9 | W 18 |
339 | 431 | 210 | 164 | 148 | 101 | 85 | 602 | 5 | 2 | 240 | 347 | 154 | 1610 | 667 | 606 | 26 | 30 | 15 | 24 | |
Swell 3 Height (m) Direction Period (s) | SSE 17 | SSW 22 | SSE 16 | S 15 | — | W 18 | SSW 19 | SSW 18 | — | SW 26 | SSW 26 | W 10 | SW 23 | SSE 9 | W 22 | S 9 | — | — | — | — |
59 | 154 | 48 | 112 | — | 6 | 136 | 404 | — | 27 | 66 | 2 | 193 | 153 | 9 | 41 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 8 | S 9 | SSE 8 | SSE 8 | SSE 8 | — | — | — | S 11 | S 10 | — | SSE 10 | — | — | SSE 9 | SSE 5 | SSE 5 | SSE 5 | SSE 6 | SSE 6 |
367 | 339 | 290 | 252 | 252 | — | — | — | 332 | 284 | — | 201 | — | — | 146 | 39 | 40 | 49 | 57 | 85 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 619 | 138 | 138 | 33 | 138 | 473 | 520 | 138 | 107 | 138 | 104 | 33 | 33 | 5 | 0 | 33 | 138 | 138 | 520 | 104 |
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.










