Surf Forecasts:
E-Bay surf forecast from 17 Aug 2026:
- Best quality surf: Thursday 20 Aug, 7PM (local time) - 5.5ft (1.7m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 7ft (2.2m), 17s period, S swell with 2,968 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 7PM (local time) - 5.5ft (1.7m), 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 Thursday (Aug 20) at 7PM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 0.4m and 11s. 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 2.2m 17s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 10s period and expected on Tuesday (Aug 18) at 4AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Thu 20th Aug) | 5.5ft (1.7m) 16s |
| Best Surf | 7PM (Thu 20th Aug) | 5.5ft (1.7m) 16s |
| Most Powerful | 4PM (Wed 19th Aug) | 7ft (2.2m) 17s |
Table - best surf conditions forecast for E-Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – looks like we're in for a bit of a tricky stretch at E-Bay. This is a reef set-up, fairly consistent, and the swell's mostly coming from the S and SSW, which is pretty much on the money for this spot. But the wind's the problem for most of the run.
We’re kicking off Monday the 17th with tiny 2ft of S swell, period around 14 seconds. That's got some shape to it, but with a cross-on SE breeze at 9 mph, it's just messy. Water's sitting at 85°, which is about average for this time of year, so no surprises there.
The real heartbreak starts Tuesday the 18th. Swell jumps up nicely – 5ft from the SSW on Tuesday morning, and then building to 7ft by Wednesday the 19th and 7ft Wednesday afternoon. The combined swell energy hits big numbers (2398 and 3043), so there’s plenty of grunt in the water. Periods are long, 16 to 19 seconds – pure groundswell. But here's the rub: it's all onshore wind, blowing from the SSE and S. That's going to turn the reef into a churned-up mess. This is the kind of setup that might look more interesting for kite surfing than a clean paddle session.
Thursday the 20th through Saturday the 22nd is more of the same. Swell sticks around 5ft to 6ft, but that wind just won't let up. It’s marginal at best. Sunday the 23rd drops back to 5ft, and the energy fades.
Then things get quiet. From Monday the 24th right through to Tuesday the 1st of September, it’s a long stretch of poor surf. Swell size drops below 3ft for a few days, and the combined energy readings are low (mostly two-digit or low three-digit values like 242 or 318). The wind just keeps howling onshore.
The one true standout – and it’s a long way off – is Saturday the 29th of August. After weeks of onshore crap, we get a window. The afternoon shows 3ft of SSW swell, and the wind goes *glassy*. Calm. Dead flat. 0 mph. That's “Slight air” for you. Combined energy is still low (419), so it won't be big, but it'll be clean. For a reef break like this, glassy conditions with a tiny, long-period swell mean you might snag a few perfect, peeling little runners. Keep an eye on that date, but don’t hold your breath – it’s a long way out.
The morning of the 28th also offers a glimmer with a cross-off wind from the W, but it’s only 3ft. Still, clean is clean.
So, bottom line: the third week of August is mostly a washout for decent surfing at E-Bay. That magic window late on the 29th is the only real hope in the 16-day outlook.
Stay tuned, and hope the forecasts tune up.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Wed morning. Warm (max 28°C on Mon morning, min 27°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu morning. Warm (max 28°C on Thu morning, min 27°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | S 14 | S 14 | SSW 18 | SSW 16 | SSW 19 | SSW 19 | SSW 18 | S 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | S 15 | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | S 14 |
Wave Graph | |||||||||||||||||||||
203 | 184 | 528 | 1132 | 980 | 2470 | 2398 | 2968 | 2488 | 1916 | 1685 | 1265 | 1074 | 891 | 1855 | 1565 | 1241 | 931 | 736 | 599 | 627 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | on | cross-on | on | cross-on | on | on | on | cross-on | on | on | on | on | on | cross-on | on | on | on |
High Tide | 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 | 1:42PM0.47m | 2:40AM0.84m | 3:35PM0.50m | 3:50AM0.89m | ||||||||
Low Tide | 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 | 7:39AM0.44m | 6:07PM0.33m | 11:09AM0.38m | 7:37PM0.37m | ||||||||
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | |
— | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:27 | — | — | 6:27 | — | |
mm | — | — | — | 3 | — | — | 4 | 3 | 9 | 1 | 1 | 1 | — | — | — | — | — | — | 2 | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 27 |
Feels °C | 30 | 30 | 30 | 29 | 30 | 30 | 31 | 30 | 29 | 30 | 31 | 31 | 30 | 30 | 29 | 28 | 29 | 29 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | SSW 16 | S 15 | SSW 19 | SSW 18 | S 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | S 15 | SSW 14 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | S 14 |
203 | 184 | 350 | 1132 | 911 | 2470 | 2398 | 2968 | 2488 | 1916 | 1685 | 1265 | 1074 | 622 | 1855 | 1565 | 1241 | 931 | 736 | 599 | 622 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | S 8 | SSW 18 | SSW 21 | SSW 19 | SSE 6 | — | WNW 10 | WNW 10 | WNW 10 | WNW 11 | SSE 5 | S 19 | S 18 | WNW 10 | WNW 9 | S 26 | S 24 | S 21 | S 19 | S 18 |
57 | 33 | 528 | 180 | 980 | 24 | — | 10 | 20 | 20 | 22 | 7 | 472 | 891 | 19 | 16 | 13 | 43 | 144 | 480 | 627 | |
Swell 3 Height (m) Direction Period (s) | SSW 20 | SSW 20 | SSW 22 | WNW 8 | W 22 | W 10 | — | — | — | — | — | S 22 | WNW 11 | WNW 11 | W 16 | W 16 | S 25 | S 24 | WNW 8 | S 16 | WNW 8 |
75 | 127 | 181 | 7 | 9 | 2 | — | — | — | — | — | 37 | 22 | 22 | 5 | 5 | 13 | 43 | 7 | 45 | 6 | |
Wind waves Height (m) Direction Period (s) | SE 3 | SSE 4 | — | SSE 10 | S 9 | SW 8 | S 6 | SW 10 | S 4 | S 4 | — | — | SSE 5 | SSE 5 | — | — | — | — | — | — | — |
3 | 6 | — | 135 | 127 | 17 | 20 | 65 | 17 | 14 | — | — | 15 | 10 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 6 | 0 | 154 | 113 | 6 | 6 | 6 | 6 | 0 | 0 | 0 | 0 | 313 | 2 | 6 | 6 | 6 | 6 | 478 | 6 |
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.











