
Surf Forecasts:
E-Bay surf forecast from 15 Sep 2026:
- Best quality surf: Saturday 19 Sep, 10PM (local time) - 4.5ft (1.4m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 20 Sep, 1AM (local time) - 5ft (1.5m), 16s period, SSW swell with 1,109 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 10PM (local time) - 4.5ft (1.4m), 16s period with SSW swell.
Best Forecast Surf Conditions for E-Bay this week:
The surf forecast for E-Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 19) at 10PM. The primary swell is predicted to be 1.4m and 16s period with a secondary swell of 0.8m and 5s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at E-Bay in the next 16 days are 1.5m 16s and forecast to arrive on Sunday (Sep 20) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Wednesday (Sep 16) at 7AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 19th Sep) | 4.5ft (1.4m) 16s |
| Best Surf | 10PM (Sat 19th Sep) | 4.5ft (1.4m) 16s |
| Most Powerful | 1AM (Sun 20th Sep) | 5ft (1.5m) 16s |
Table - best surf conditions forecast for E-Bay over the next 16 days.
The Lowdown
Alright, let's get into this. This is a tricky run of swell for us here at E-Bay. We’ve got some serious waiting to do before anything really cleans up, but there are a few windows if you’re keen and patient.
For the first week, starting Tuesday the 15th right through to the weekend, it’s a write-off. We’ve got onshore winds from the south and southeast blowing hard, creating choppy, poor surf conditions. The swell is hanging around 3 ft to 4 ft from the SSW, but with that wind on it, it’s messy. The combined energy is moderate, but it’s all wasted with the wind. Thursday the 17th afternoon clears up a little sky-wise, but that south wind is still straight on it, so forget about it. By Saturday the 19th, we see a bump in period to 18 seconds (a nice long groundswell), and the energy jumps a bit, but the wind is cross and there’s a risk of thunderstorms. It’s marginal at best, and the water is sitting at a warm 85°F, about normal for this time of year.
Now, the standout. Monday the 21st. This is the one to circle on your calendar. The wind goes glassy – absolutely dead calm – in the morning and afternoon from the east-southeast at just 3 mph. The swell drops a little to 5 ft to 5 ft from the south, with a solid 14-second period. That combined energy is still moderate, but with glassy conditions, it’s going to be clean. The swell direction is S, and the optimum for E-Bay is W, so it’s not a perfect match, but the clean conditions and that long period groundswell will still produce some nice, lined-up waves. This is a reef break, so long-period swells are a bonus here – better shape and more power. Crowds are “sometimes”, so you might have a few out, but it won’t be a zoo. This one is the highlight.
After that, things go quiet again. Tuesday the 22nd is tiny – 2 ft with a long period, but the wind is cross-onshore again and it’s rated poor. We’ve got a long gap of poor conditions and onshore winds through the rest of that week and into the next.
Then, we look at the far end of the forecast. Sunday the 27th of September rolls around with a big pulse of south swell – 6 ft to 7 ft, 17 to 18-second periods, and the combined energy is massive – that is very strong wave energy. But the wind is still onshore from the SSE at 9 mph, and there are thunderstorms about. At 7 ft, this is expert territory only. It’s going to be big, powerful, and likely out of control with that wind. It’s a promising but very uncertain call that far out. Monday the 28th settles a little, with energy dropping and the wind easing to a light cross-shore from the east. That’s a better look, with 5 ft south swell and 16-second period – cleaner, but still a touch on the bigger side.
So, for the absolute best session, it’s Monday the 21st of September at E-Bay. Get on it before the wind gets up. The 27th and 28th are big-swell prospects for the experienced crew, but keep an eye on the wind.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryHeavy rain (total 74mm), heaviest during Sat morning. Warm (max 27°C on Fri afternoon, min 23°C on Sat afternoon). Wind will be generally light. | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 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) | SSW 15 | SSW 14 | SSW 14 | SSW 15 | S 15 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | S 14 | S 14 | SSW 13 |
Wave Graph | ||||||||||||||||||||
678 | 529 | 536 | 639 | 627 | 648 | 580 | 383 | 331 | 346 | 331 | 961 | 917 | 1109 | 1038 | 1038 | 869 | 906 | 711 | 290 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | cross-on | on | cross-on | cross | on | cross-on | cross-on | cross-on | glassy | glassy | glassy |
High Tide | 8:53PM1.13m | 8:58AM0.81m | 9:26PM1.05m | 9:23AM0.70m | 10:01PM0.96m | 9:43AM0.61m | 10:45PM0.87m | 9:52AM0.53m | 00:05AM0.80m | 9:39AM0.46m | 1:20PM0.47m | 1:58AM0.80m | 3:20PM0.53m | 3:16AM0.85m | ||||||
Low Tide | 2:59AM0.15m | 2:40PM0.09m | 3:35AM0.21m | 3:09PM0.15m | 4:16AM0.29m | 3:41PM0.22m | 5:09AM0.37m | 4:21PM0.29m | 6:34AM0.43m | 5:21PM0.37m | 10:28AM0.40m | 7:06PM0.42m | ||||||||
— | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:21 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:19 | — | — | 6:19 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | 13 | 43 | 13 | 2 | 1 | — | — | 1 | 3 | 3 |
Temp °C | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 24 | 23 | 25 | 26 | 26 | 26 | 27 | 27 | 27 |
Feels °C | 28 | 27 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 28 | 28 | 27 | 24 | 28 | 27 | 28 | 30 | 32 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | SSW 15 | S 15 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | S 14 | S 14 | SSW 13 |
678 | 529 | 536 | 639 | 627 | 648 | 580 | 383 | 331 | 346 | 331 | 961 | 917 | 1109 | 1038 | 1038 | 869 | 906 | 711 | 290 | |
Swell 2 Height (m) Direction Period (s) | S 24 | SW 21 | SSW 20 | SSW 19 | SSW 18 | WNW 10 | SSW 16 | SSE 7 | SSW 20 | SSW 20 | SSW 18 | WNW 8 | SSW 13 | SSE 7 | WNW 8 | S 16 | S 15 | S 21 | S 20 | SSW 19 |
11 | 18 | 37 | 37 | 124 | 33 | 330 | 50 | 38 | 38 | 127 | 22 | 96 | 5 | 6 | 334 | 441 | 9 | 8 | 36 | |
Swell 3 Height (m) Direction Period (s) | W 15 | W 9 | W 8 | W 8 | W 8 | — | — | SSW 16 | SW 20 | WNW 8 | WNW 8 | S 15 | SSE 8 | — | — | — | — | — | — | WNW 8 |
4 | 2 | 5 | 5 | 5 | — | — | 102 | 99 | 14 | 13 | 4 | 6 | — | — | — | — | — | — | 7 | |
Wind waves Height (m) Direction Period (s) | SSE 8 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | — | SSE 7 | SSE 7 | SSE 7 | SSE 4 | SSE 5 | SSE 5 | SSE 4 | SSE 5 | SSE 5 | SE 5 | — | SSE 8 |
99 | 73 | 111 | 88 | 65 | 63 | 49 | — | 36 | 36 | 48 | 29 | 28 | 22 | 17 | 27 | 37 | 6 | — | 116 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 478 | 154 | 6 | 478 | 6 | 378 | 478 | 0 | 154 | 317 | 154 | 6 | 378 | 0 | 6 | 0 | 6 | 0 | 0 | 0 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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Information about the E-Bay Surf forecast
The above surf forecast table for E-Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at E-Bay can be found by selecting the local surf guide option on the grey menu. Our E-Bay 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 (E-Bay) 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 E-Bay 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 E-Bay, camping, hotels and holiday cottages in Mentawi Islands, consider staying in Padang which is 168 km (104 miles) away.










