Surf Forecasts:
E-Bay surf forecast from 21 Aug 2026:
- Most powerful swell: Friday 21 Aug, 7PM (local time) - 6ft (1.8m), 17s period, S swell with 1,947 kJ wave energy.
Best Forecast Surf Conditions for E-Bay this week:
The most powerful waves expected at E-Bay in the next 16 days are 1.8m 17s and forecast to arrive on Friday (Aug 21) at 7PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Sunday (Aug 23) at 7PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Fri 21st Aug) | 6ft (1.8m) 17s |
Table - best surf conditions forecast for E-Bay over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you: this 16-day window for E-Bay is a real mixed bag and mostly a game of patience. The swell is there, but the wind is a persistent problem for most of the run, making it tough to get a clean wave. The standout window is right at the very end, on the 2nd of September, when things finally line up. For the size, it’s generally manageable—most days are under 7 ft—so it’s not a total washout, but you’ll be scratching your head a lot.
We start off on Friday, the 21st of August, with a solid 5 ft swell from the SSW at 15 seconds, but the wind is onshore from the SE at 9 mph. The combined energy is strong at 1598, but the report calls it marginal, and honestly, the onshore breeze will chop it up. It’s an advanced, fairly consistent reef break, and the water temp is a warm 85°, which is about average for the time of year. The crowd factor is “sometimes,” so it could get busy even when it’s average.
The next few days are a repeat of the same story. Saturday the 22nd sees a bump to 6 ft from the S (16 seconds, energy 1736), but it’s still onshore from the SE at 12 mph. Sunday the 23rd drops to 4 ft, and by Monday the 24th, we’re dealing with risk of thunderstorms and onshore wind. The combined energy is still moderate to strong (661 to 1987), but the wind direction is spoiling it. For a few days, the scores are rock bottom—0 or 1 out of 10—so it’s not worth paddling out.
Then we hit a bit of a lull. From the 26th of August through the 30th, the swell drops to 2 ft to 3 ft, and the energy falls to weak levels (269 to 812). The wind stays onshore, mostly light, but it’s still not clean. There’s a brief moment on the afternoon of the 30th of August where the wind goes glassy, with just a 3 mph breeze from the SSE and a 2 ft swell from the S at 13 seconds. The energy is weak at 287, but the report says “expect good surf conditions,” so if you’re desperate, you could catch a knee-high wave, but it’s not a standout.
The real standout is the 2nd of September. Wednesday morning, the 2nd, we get a 4 ft SSW swell at 16 seconds with zero wind—dead calm, glassy as a mirror. The energy is moderate at 902, and the report says “expect very good surf conditions.” The wind stays glassy into the afternoon with a 4 ft swell. This is the best on offer, no question. The period is 16 seconds, which is a nice groundswell, and it’s a reef break, so the long period should work well here. Just be aware that the crowds are “sometimes,” so it might have a few people out.
After that, it fades. Thursday the 3rd of September drops to 3 ft with cross-onshore wind, and the rest of the run into the 5th is small, weak, and mostly onshore. The combined energy falls to 270-578, and the scores are poor to marginal.
The gap between the last decent swell on the 1st of September and the 2nd is only a day, but the real gap is from the 26th of August to the 1st of September—a stretch of about 6 days where the surf is tiny or messy. Don’t get your hopes up for the first week. The 2nd of September is your one real shot, and it’s worth marking on the calendar, but it’s a long way out, so keep an eye on the forecasts.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Sun night. Warm (max 29°C on Sat afternoon, min 27°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 25mm), heaviest during Tue morning. Warm (max 28°C on Wed afternoon, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 15 | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 19 | S 14 | SSW 16 | S 16 | S 15 | S 15 | S 14 | S 14 | SSW 13 | SSW 13 | SSW 16 | SSW 20 | SSW 18 | SSW 16 |
Wave Graph | |||||||||||||||||||||
1092 | 891 | 1667 | 1727 | 1377 | 1045 | 553 | 605 | 757 | 705 | 868 | 636 | 653 | 801 | 388 | 295 | 290 | 259 | 507 | 1362 | 1271 | |
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 | 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 | 5:56AM1.10m | 6:25PM0.85m | |||||||||
Low Tide | 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 | 12:15PM0.13m | 11:50PM0.17m | ||||||||
6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 6:28 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:25 | — | — | 6:25 | — | |
mm | — | 1 | 4 | — | — | 5 | 1 | — | 8 | 2 | 2 | 9 | 7 | 1 | — | 2 | — | 2 | 1 | — | — |
Temp °C | 28 | 28 | 28 | 28 | 29 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 27 | 27 |
Feels °C | 30 | 30 | 31 | 29 | 31 | 29 | 29 | 30 | 31 | 29 | 28 | 29 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | 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 | S 14 | SSW 13 | SSW 13 | SSW 16 | SSW 15 | SSW 18 | SSW 16 |
1092 | 724 | 1667 | 1727 | 1377 | 1045 | 553 | 529 | 757 | 513 | 868 | 636 | 653 | 801 | 388 | 295 | 290 | 259 | 305 | 1362 | 1271 | |
Swell 2 Height (m) Direction Period (s) | S 19 | S 18 | WNW 10 | WNW 9 | S 24 | S 18 | S 19 | S 19 | S 18 | SSW 16 | WNW 10 | WNW 10 | WNW 9 | SE 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 20 | SSE 8 | SSE 8 |
472 | 891 | 10 | 9 | 11 | 101 | 362 | 605 | 613 | 705 | 10 | 10 | 8 | 19 | 63 | 65 | 63 | 65 | 507 | 62 | 44 | |
Swell 3 Height (m) Direction Period (s) | WNW 11 | WNW 11 | W 16 | — | SSW 24 | SSW 22 | WNW 8 | S 16 | — | SW 19 | — | SW 16 | — | — | W 7 | SSW 18 | S 24 | SSW 12 | SSE 8 | SSE 8 | — |
22 | 22 | 5 | — | 55 | 158 | 7 | 45 | — | 96 | — | 10 | — | — | 1 | 64 | 11 | 115 | 67 | 47 | — | |
Wind waves Height (m) Direction Period (s) | SSE 5 | SSE 5 | SSE 5 | — | — | — | SSE 6 | SSE 6 | — | S 13 | SSE 6 | SSE 7 | SSE 8 | S 7 | — | S 8 | — | — | — | — | — |
12 | 14 | 19 | — | — | — | 79 | 68 | — | 673 | 71 | 97 | 75 | 44 | — | 47 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 154 | 6 | 6 | 2 | 0 | 154 | 113 | 154 | 6 | 378 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
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.











