
Surf Forecasts:
Gilligans surf forecast from 10 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 10PM (local time) - 8ft (2.4m), 18s period, SW swell with 3,764 kJ wave energy.
Best Forecast Surf Conditions for Gilligans this week:
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+) | - | - |
| Best Surf | - | - |
| 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 folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.
To be straight with you, the first week or so is a bit of a grind. The swell is solid, no doubt, but the wind is a constant problem. The surf is there, but it’s messy and choppy, more of a struggle than a session. We’ve got a long run of marginal conditions from Thursday the 10th right through to the end of the following week. The real standout action is a long way off, but it looks like it’ll be worth the wait.
The only spot on the radar here is Gilligans, a reef break that’s very consistent and exposed to the SW swell. The water temp is sitting around 84°, which is about average for this time of year.
The first few days, from Thursday the 10th through to Monday the 14th, see a solid SW swell, building from 6 ft up to 8 ft. The energy is strong, with readings in the 2000 to 3800 range. But the wind is the enemy. It’s blowing from the SSE at 15 to 16 mph, keeping it either cross or cross-on. It’s choppy and lumpy, and honestly, not worth paddling out for. The period is long, between 15 and 19 seconds, which means there’s proper groundswell energy, but the wind is just ruining it. This stretch is a write-off.
Things stay pretty average through the middle of the month. The swell does drop a little from the 15th to the 18th, settling around 5 ft to 6 ft, but the wind just keeps messing it up. It’s still mostly cross-shore, and the energy is dropping, getting down into the 900s. A few of these afternoons are rated as poor, so don’t get excited.
Now, here’s where it gets interesting. The weekend of the 19th and 20th of September is looking like the real deal. On Saturday the 19th, we’ve got a 6 ft SSW swell with a 17-second period, a light ESE breeze at 6 mph making it clean, and the energy is back up to a strong 2207. This is the kind of window you wait for. Then Sunday the 20th is even better. The swell bumps up to 8 ft from the SSW, still a solid 16-second period, but the wind swings to a light WNW and goes glassy in the afternoon. The energy is a very strong 2446. These are clean, powerful conditions for experienced surfers. The wave direction is matching the optimum SW swell direction, and the reef should handle that long period energy well. Keep in mind, with the swell over 8 ft on Sunday, this is for the experienced crew only.
The start of the next week, the 21st and 22nd, still has some clean windows. Monday morning the 21st has a 6 ft SSW swell with a light offshore N breeze, and Tuesday morning the 22nd is glassy with a 5 ft SSW swell. Mid-week, the 23rd and 24th, the swell drops a touch but we get another clean morning on the 23rd with a 6 ft S swell and a light ESE wind. After that, the signal fades, and the last couple of days of September look flat and weak, with the energy dropping below 1000.
So, the takeaway? The first week is a right-off with the wind. The standout is the weekend of September 19th and 20th at Gilligans. Saturday looks good, but Sunday the 20th with that glassy afternoon session is the pick of the whole forecast. Mark it in the calendar.
Rusty.
Short Range ForecastHeavy rain (total 25mm), heaviest during Sat afternoon. Warm (max 28°C on Thu afternoon, min 26°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Mon morning. Warm (max 28°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 | SSW 16 | SSW 15 | SW 15 | SW 21 | SW 19 | SW 19 | SW 18 | SW 16 | SW 16 | SW 15 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph | ||||||||||||||||||||
1734 | 1498 | 1238 | 1059 | 1610 | 2118 | 3072 | 3519 | 3128 | 2742 | 1788 | 2093 | 2119 | 1882 | 1529 | 1358 | 1142 | 1191 | 1191 | 1175 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 5:51PM0.83m | 6:00AM1.02m | 6:28PM0.93m | 6:38AM0.99m | 7:03PM0.99m | 7:13AM0.93m | 7:37PM1.03m | 7:46AM0.86m | 8:10PM1.02m | 8:17AM0.77m | 8:42PM0.98m | 8:47AM0.68m | 9:15PM0.92m | |||||||
Low Tide | 11:44PM0.11m | 12:22PM0.03m | 00:29AM0.07m | 12:49PM0.02m | 1:10AM0.06m | 1:15PM0.02m | 1:48AM0.07m | 1:40PM0.03m | 2:24AM0.10m | 2:04PM0.06m | 3:00AM0.15m | 2:29PM0.09m | 3:37AM0.20m | |||||||
— | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:19 | — | — | 6:19 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | 1 | — | 2 | 7 | 13 | 2 | 2 | 1 | 3 | 1 | 2 | — | — | — | 2 | 2 | 12 |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 |
Feels °C | 28 | 29 | 29 | 30 | 29 | 30 | 29 | 29 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 27 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 15 | SW 15 | SW 14 | SW 19 | SW 19 | SW 18 | SW 16 | SW 16 | SW 15 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
1734 | 1498 | 1238 | 1059 | 857 | 2118 | 3072 | 3519 | 3128 | 2742 | 1788 | 2093 | 2119 | 1882 | 1529 | 1358 | 1142 | 1191 | 1191 | 1175 | |
Swell 2 Height (m) Direction Period (s) | W 11 | SSW 26 | SW 24 | SW 23 | SW 21 | SW 14 | SW 14 | — | W 19 | — | W 18 | SSE 8 | W 16 | W 16 | W 16 | W 15 | SSW 21 | SW 19 | SW 19 | SW 18 |
2 | 66 | 347 | 193 | 1610 | 606 | 606 | — | 30 | — | 24 | 13 | 20 | 20 | 19 | 17 | 45 | 133 | 181 | 375 | |
Swell 3 Height (m) Direction Period (s) | SW 26 | W 15 | W 10 | W 10 | — | W 22 | W 21 | — | — | — | W 18 | W 17 | — | S 14 | S 24 | SW 24 | W 10 | W 9 | W 8 | WNW 10 |
27 | 4 | 2 | 2 | — | 9 | 36 | — | — | — | 24 | 23 | — | 4 | 11 | 22 | 2 | 2 | 5 | 9 | |
Wind waves Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 |
294 | 281 | 235 | 197 | 181 | 173 | 140 | 101 | 82 | 66 | 70 | 83 | 79 | 82 | 91 | 105 | 128 | 135 | 139 | 105 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 520 | 138 | 138 | 520 | 138 | 33 | 33 | 5 | 21 | 21 | 5 | 33 | 104 | 5 | 138 | 520 | 138 | 138 | 455 | 210 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.










