Surf Forecasts:
E-Bay surf forecast from 31 Aug 2026:
- Best quality surf: Thursday 3 Sep, 1AM (local time) - 3.5ft (1.1m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 1 Sep, 10AM (local time) - 5ft (1.5m), 17s period, SSW swell with 1,284 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 1AM (local time) - 3.5ft (1.1m), 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 (Sep 03) at 1AM. The primary swell is predicted to be 1.1m and 16s period. 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 17s and forecast to arrive on Tuesday (Sep 01) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Monday (Sep 07) at 1AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Thu 3rd Sep) | 3.5ft (1.1m) 16s |
| Best Surf | 1AM (Thu 3rd Sep) | 3.5ft (1.1m) 16s |
| Most Powerful | 10AM (Tue 1st Sep) | 5ft (1.5m) 17s |
Table - best surf conditions forecast for E-Bay over the next 16 days.
The Lowdown
G’day, Rusty here. Alright, let’s talk about what’s coming up at E-Bay. We’ve got a bit of a slow start, and honestly, the first week or so is pretty average, but patience will pay off if you can wait. The real standout is shaping up for Friday, September 11th, and it’s worth putting a pin in that.
Right now, from Monday, August 31st through the first few days of September, we’re dealing with some onshore wind and messy conditions. Swell is hanging around 4 ft to 5 ft from the SSW, with that long period around 16 to 18 seconds giving it some real grunt—the combined energy is pumping between 1079 and 1284 (moderate to strong), but the wind is all wrong, so the wave face is just junk. Not worth your time.
The first glimmer of hope comes on Thursday morning, September 3rd. The wind goes glassy from the NE at just 3 mph, and we’ve got a 3 ft SSW swell with a period of 15 seconds. Energy is sitting at 396 (weak), but that glassy wind means clean conditions. Still, it’s marginal because of tide or quality, so keep expectations low.
The middle part of the month is a struggle. Through the 4th to the 10th, we see a mix of cross-onshore and onshore winds, with swell heights between 3 ft and 5 ft. On Thursday, September 10th, there’s a modest bump in height (5 ft) and period (17 seconds), but the wind is still cross-onshore from the SE, so the surface gets chopped up. Energy jumps to 1540 (strong), but it’s not clean.
Now, here’s the one I’m excited about: Friday, September 11th. The morning session has a WNW cross-offshore breeze at 9 mph, which will groom the 5 ft SSW swell (16-second period) into clean lines for experienced surfers. The combined energy is 1381 (strong), and the optimum swell direction is from the W, so that SSW pulse is well-aligned for E-Bay, a reef setup that loves a solid south-west groundswell. This is a true standout for advanced crew. The afternoon glass-off with a 3 mph easterly and 4 ft SSW swell (16 seconds) is also a top pick—glassy, clean, and less energy (906) but still fun.
After that, the window closes again. From Saturday, September 12th onwards, it’s back to onshore winds and dropping swell. There’s a brief flash on Tuesday, September 15th with a glassy NE wind in the morning (4 ft S swell, 14 seconds) and again in the afternoon (3 ft S swell), but the energy is weak (486 and 407) and the quality is so-so.
Overall, the best bet is the morning of Friday, September 11th—that’s your swell window. For a reef break at E-Bay, the long period (16 seconds) will give you proper bowling waves, but expect some lulls between sets. The water temperature is 85°F, which is about average for the time of year, so no need for a thick suit.
Rusty
Short Range ForecastHeavy rain (total 36mm), heaviest during Wed morning. Warm (max 29°C on Wed afternoon, min 27°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 19mm), heaviest on Thu night. Warm (max 28°C on Thu afternoon, min 26°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | S 17 | S 17 | S 15 | S 16 | S 18 | S 16 |
Wave Graph | ||||||||||||||||||||
1038 | 1231 | 1284 | 1081 | 870 | 733 | 575 | 568 | 376 | 366 | 356 | 290 | 225 | 166 | 579 | 546 | 272 | 522 | 607 | 607 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | glassy | glassy | cross-on | on | cross-on | on | cross-on | on | on | on | on | on | on |
High Tide | 8:20PM1.12m | 8:23AM1.00m | 8:53PM1.14m | 8:54AM0.91m | 9:30PM1.12m | 9:28AM0.80m | 10:17PM1.07m | 10:10AM0.68m | 11:19PM1.01m | 11:17AM0.57m | 00:49AM0.97m | 1:40PM0.52m | 2:29AM0.99m | |||||||
Low Tide | 2:24AM0.09m | 2:28PM0.01m | 3:05AM0.12m | 3:00PM0.04m | 3:51AM0.18m | 3:35PM0.08m | 4:46AM0.25m | 4:17PM0.15m | 5:59AM0.32m | 5:12PM0.23m | 7:49AM0.35m | 6:34PM0.30m | ||||||||
— | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:23 | — | — | 6:23 | — | — | 6:23 | — | — | 6:23 | — | |
mm | — | 6 | 4 | 1 | 4 | 8 | — | 5 | 8 | 1 | 5 | 1 | — | 3 | 2 | 2 | 2 | 3 | 2 | 5 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 29 | 30 | 30 | 30 | 31 | 31 | 32 | 32 | 32 | 31 | 30 | 31 | 31 | 30 | 30 | 30 | 30 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | S 17 | S 17 | S 15 | S 16 | S 18 | S 16 |
1038 | 1231 | 1284 | 1081 | 870 | 733 | 575 | 568 | 376 | 366 | 356 | 290 | 225 | 166 | 579 | 546 | 272 | 522 | 607 | 607 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | — | — | — | — | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 18 | S 16 | WNW 9 | SSW 17 | S 18 | S 20 | S 13 | — |
41 | 21 | — | — | — | — | 99 | 81 | 60 | 62 | 60 | 62 | 54 | 130 | 7 | 119 | 221 | 279 | 82 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 16 | W 16 | — | WNW 8 | S 18 | WNW 8 | WNW 8 | S 9 | W 13 | WNW 10 | WNW 10 | SSW 16 | S 24 |
— | — | — | — | — | — | — | 20 | 20 | — | 6 | 6 | 6 | 6 | 2 | 3 | 10 | 9 | 229 | 11 | |
Wind waves Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | — | — | — | — | — | — | SSE 8 | SSE 7 | SE 5 | SSE 8 | SSE 7 | SSE 8 | SSE 8 | SSE 8 |
116 | 146 | 143 | 137 | 92 | 102 | — | — | — | — | — | — | 66 | 70 | 43 | 199 | 193 | 220 | 257 | 339 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 478 | 154 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 2 | 6 | 6 | 6 | 6 | 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.











