Surf Forecasts:
E-Bay surf forecast from 20 Aug 2026:
- Best quality surf: Monday 24 Aug, 7AM (local time) - 5ft (1.6m), 17s period, S swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 10PM (local time) - 6ft (1.9m), 17s period, S swell with 1,956 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 7AM (local time) - 5ft (1.6m), 17s period with S 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 Monday (Aug 24) at 7AM. The primary swell is predicted to be 1.6m and 17s period with a secondary swell of 1.1m and 13s. Another secondary swell of 1.3m and 13s is also forecast. 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 1.9m 17s and forecast to arrive on Friday (Aug 21) at 10PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Tuesday (Aug 25) at 10AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 24th Aug) | 5ft (1.6m) 17s |
| Best Surf | 7AM (Mon 24th Aug) | 5ft (1.6m) 17s |
| Most Powerful | 10PM (Fri 21st Aug) | 6ft (1.9m) 17s |
Table - best surf conditions forecast for E-Bay over the next 16 days.
The Lowdown
Alright folks, let’s talk about this stretch coming up at E-Bay. It’s a tricky one, to be honest. The next couple of weeks are going to be a real mixed bag, and for most of it, we’re dealing with messy conditions.
Right from the get-go, starting Thursday the 20th of August, we’ve got some solid swell in the water – a long-period 16-second groundswell from the SSW pushing through at about 6ft. The energy is there, with a combined swell energy of (1949). But here’s the bummer: it’s all onshore wind. That southeasterly breeze is going to put a chop on it, and the reports are calling it marginal. Not the clean, lined-up waves we dream about. This pattern hangs around for days. We see that SSW swell staying in the 4ft to 6ft range right through to the 24th, but with that persistent onshore wind, it’s just going to be lumpy and hard to enjoy.
The weekend of the 22nd and 23rd has that risk of thunderstorms too, which doesn’t help the vibe. The swell does start to drop off from the 25th of August, and we hit a flat spell. From Tuesday the 25th through the end of the month, the surf is poor, with heights dropping below 3ft. That’s a solid few days where you can leave the board in the car. We do get a little spike on the 27th with a very long 19-second period swell under 3ft, but it's coming from the south with a cross-onshore wind. Not going to do much at this reef.
Now, here’s where it gets interesting. Keep your eyes on the end of the month. The 31st of August into the 1st of September, there’s a pulse of bigger, stronger SSW groundswell. We’re looking at a solid 7ft on the 31st afternoon, with a 19-second period and combined energy climbing up to (2921). That’s a serious amount of power. The wind is still onshore or cross-onshore on the 31st morning, but by the afternoon it does look lighter. That is the standout potential in this outlook, but it’s a whole week and a half away, so treat it as promising but not locked in.
Then, heading into the first week of September, things finally clean up. On Wednesday the 2nd of September, we get a bit of magic. The wind goes glassy in the afternoon, swinging light from the WSW. The swell is a clean 5ft from the SSW. That is the best you’re going to see in this 16-day run. Thursday the 3rd looks good, too, with a light cross-offshore breeze from the NNE in the morning and 4ft swell. That’ll give you some clean, workable lines at this advanced reef break. But you have to know, E-Bay is an exposed reef, and the optimum direction is from the west. This SSW swell isn’t perfect for it, so it won’t be at its absolute best, but with that glassy wind, it’ll still be worth a paddle. Expect some crowds, as it says it gets busy sometimes.
The rest of that first week in September drops off fast, with surf fading back below 3ft and onshore winds returning by the 4th.
So, the advice is: be patient through the first week and a half of slop. The real highlight is that Wednesday the 2nd, with the glassy afternoon. The big swell on the 31st is the other one to watch, but the wind is the question. For most of this, the onshore breeze is a real problem. For a break like this, it might honestly be more interesting for the kite crew on those windier days than for us paddlers.
Stay hopeful, check the charts, and I’ll see you in the water when it cleans up.
Rusty
Short Range ForecastModerate rain (total 12mm), heaviest on Sat night. Warm (max 28°C on Fri morning, min 26°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 26mm), heaviest during Sun morning. Warm (max 28°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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 16 | SSW 16 | SSW 15 | SSW 15 | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 |
Wave Graph | |||||||||||||||||||||
1916 | 1685 | 1265 | 1092 | 891 | 1840 | 1727 | 1229 | 919 | 840 | 700 | 613 | 513 | 1451 | 636 | 662 | 515 | 322 | 295 | 232 | 193 | |
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 | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 10:35AM0.64m | 11:52PM0.88m | 11:12AM0.54m | 1:11AM0.83m | 1:42PM0.47m | 2:40AM0.84m | 3:35PM0.50m | 3:50AM0.89m | 4:38PM0.57m | 4:41AM0.96m | 5:20PM0.66m | 5:22AM1.04m | 5:55PM0.75m | ||||||||
Low Tide | 4:28PM0.21m | 5:55AM0.41m | 5:08PM0.27m | 7:39AM0.44m | 6:07PM0.33m | 11:09AM0.38m | 7:37PM0.37m | 11:22AM0.31m | 9:14PM0.35m | 11:36AM0.25m | 10:20PM0.29m | 11:54AM0.19m | 11:09PM0.23m | ||||||||
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 6:28 | — | — | 6:28 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:25 | — | |
mm | — | — | — | — | 2 | 3 | 2 | — | 5 | 3 | — | 4 | 3 | 2 | 5 | 4 | 2 | 3 | 7 | 3 | 11 |
Temp °C | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 29 | 29 | 30 | 30 | 30 | 29 | 30 | 30 | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 28 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 14 | S 16 | S 16 | S 15 | S 15 | S 14 | SSW 14 | SSE 8 | SSE 8 | SSE 8 |
1916 | 1685 | 1265 | 1092 | 724 | 1840 | 1727 | 1229 | 919 | 840 | 700 | 469 | 513 | 1451 | 636 | 662 | 515 | 322 | 105 | 107 | 77 | |
Swell 2 Height (m) Direction Period (s) | WSW 10 | WNW 11 | S 22 | S 19 | S 18 | WNW 10 | WNW 9 | S 24 | S 18 | S 19 | S 19 | S 18 | S 13 | WNW 10 | SE 7 | WNW 9 | W 9 | WNW 8 | SSW 13 | SSW 13 | SSW 16 |
33 | 22 | 37 | 472 | 891 | 10 | 9 | 11 | 99 | 362 | 605 | 613 | 280 | 10 | 8 | 8 | 2 | 6 | 295 | 232 | 193 | |
Swell 3 Height (m) Direction Period (s) | — | — | WNW 11 | WNW 11 | WNW 11 | W 16 | — | SSW 24 | SSW 22 | WNW 8 | S 16 | — | SW 19 | — | SW 16 | — | — | — | SSW 18 | S 24 | S 12 |
— | — | 22 | 22 | 22 | 5 | — | 55 | 158 | 7 | 45 | — | 96 | — | 10 | — | — | — | 32 | 11 | 106 | |
Wind waves Height (m) Direction Period (s) | — | SW 10 | SSE 4 | SSE 5 | SSE 5 | SSE 5 | — | SE 4 | — | — | SSE 6 | SSE 6 | SSE 5 | S 5 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | S 8 | S 8 | — |
— | 28 | 10 | 13 | 24 | 21 | — | 6 | — | — | 43 | 53 | 50 | 57 | 71 | 92 | 89 | 105 | 88 | 86 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 113 | 0 | 0 | 113 | 0 | 0 | 378 | 6 | 6 | 378 | 154 | 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.











