Surf Forecasts:
Telescopes surf forecast from 21 Aug 2026:
- Best quality surf: Friday 21 Aug, 4PM (local time) - 5.5ft (1.7m), 15s period, SSW swell with cross-offshore winds.
- Most powerful swell: Saturday 22 Aug, 7AM (local time) - 7ft (2.2m), 16s period, SSW swell with 2,335 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 4PM (local time) - 5.5ft (1.7m), 15s period with SSW swell.
Best Forecast Surf Conditions for Telescopes this week:
The surf forecast for Telescopes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 4PM. The primary swell is predicted to be 1.7m and 15s period with a secondary swell of 1.3m and 18s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Telescopes in the next 16 days are 2.2m 16s and forecast to arrive on Saturday (Aug 22) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Sunday (Aug 23) at 10AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Fri 21st Aug) | 5.5ft (1.7m) 15s |
| Best Surf | 4PM (Fri 21st Aug) | 5.5ft (1.7m) 15s |
| Most Powerful | 7AM (Sat 22nd Aug) | 7ft (2.2m) 16s |
Table - best surf conditions forecast for Telescopes over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about Telescopes.
We’ve got a solid run of swell on the horizon, but it’s not all clean. This is a consistent, exposed reef break that needs a south-west groundswell, and we’ve got that coming in from the SSW. The water temp is about average for this time of year, nothing crazy.
The action kicks off Friday morning, August 21st. We’re looking at a 6ft SSW swell with a long 15-second period, which is proper groundswell. The combined energy is strong at 2279, so there’s plenty of push. The wind is a cross-off from the SE, keeping it clean, but the score says it’s marginal due to tide. Friday afternoon is slightly better for experienced surfers, with a 6ft swell and still clean, though there’s a risk of storms.
Saturday morning, August 22nd, brings a bigger 7ft SSW swell with a 16-second period. That’s a lot of water moving, and with a combined energy of 2261, it’s powerful. The wind is a bit stronger as a cross-off from the SSE, 12 mph, so it’s clean but the size is getting into expert-only territory. Saturday afternoon drops to 7ft, but the wind swings more cross, making it choppy. Not the best.
Sunday sees the swell dropping to 5ft, but the wind stays cross-off, keeping it clean. The energy is down to 1271, so it’s more manageable, but still decent for a paddle. Monday and Tuesday are smaller, with Tuesday morning at 6ft and clean – that’s a good one for experienced surfers, with a nice 15-second period.
The standout window is the end of the first week and into September. The morning of September 1st is the absolute best on offer. That’s a Tuesday, a full week and a half out, so it’s a long-range call, but it looks promising. We’ve got a 7ft SSW swell, 18-second period, combined energy of 3097 – that’s strong, very strong. The wind is light offshore from the E at 3 mph, making it glassy. This is a real treat for the experts. The afternoon is still big but with a cross wind, so less ideal.
September 2nd, Wednesday morning, is nearly as good – 6ft SW swell, glassy with ENE wind at 3 mph, and energy at 1756. That’s clean, powerful, and a bit smaller than the day before, so it’s still a top pick.
After that, the swell holds through the first week of September, with Thursday the 3rd offering clean 6ft waves in the morning, and Friday the 4th dropping off a bit but still surfable. The run then fades into the second week, with smaller, less consistent energy.
The biggest highlight is the morning of September 1st – that’s the one to circle. It’s a big, clean, powerful SSW groundswell with offshore winds. For a reef break like Telescopes, that’s about as good as it gets. The crowd factor is “sometimes,” so you might have some company, but it’s worth it.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri afternoon. Warm (max 28°C on Fri morning, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 33mm), heaviest during Sun night. Warm (max 28°C on Wed afternoon, min 26°C on Mon morning). 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 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 14 | SSW 18 | SSW 16 |
Wave Graph | |||||||||||||||||||||
1676 | 1208 | 2254 | 2247 | 1682 | 1321 | 892 | 743 | 926 | 661 | 1310 | 1207 | 1223 | 845 | 837 | 673 | 479 | 430 | 561 | 1038 | 1626 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:18AM0.55m | 1:13AM0.85m | 1:47PM0.49m | 2:41AM0.85m | 3:37PM0.51m | 3:51AM0.91m | 4:40PM0.58m | 4:43AM0.98m | 5:22PM0.67m | 5:23AM1.05m | 5:57PM0.77m | 5:58AM1.11m | 6:27PM0.86m | ||||||||
Low Tide | 5:56AM0.41m | 5:10PM0.28m | 7:37AM0.45m | 6:09PM0.34m | 11:10AM0.39m | 7:38PM0.37m | 11:24AM0.32m | 9:14PM0.35m | 11:37AM0.26m | 10:21PM0.30m | 11:55AM0.19m | 11:10PM0.24m | 12:16PM0.14m | 11:51PM0.18m | |||||||
6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | |
— | 6:25 | — | — | 6:25 | — | — | 6:25 | — | — | 6:25 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | |
mm | — | 3 | 3 | — | — | 4 | 1 | — | 9 | 6 | 6 | 8 | 4 | — | — | — | — | 4 | 6 | 3 | 6 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 27 | 27 |
Feels °C | 30 | 31 | 29 | 30 | 30 | 29 | 29 | 30 | 30 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 29 | 28 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 14 | SSW 18 | SSW 16 |
1676 | 1208 | 2254 | 2247 | 1682 | 1321 | 892 | 743 | 926 | 661 | 1310 | 1207 | 1223 | 845 | 837 | 673 | 479 | 430 | 561 | 1038 | 1626 | |
Swell 2 Height (m) Direction Period (s) | S 19 | S 18 | WNW 10 | WNW 10 | W 9 | S 18 | S 20 | S 19 | S 18 | SSW 13 | W 10 | SW 16 | W 9 | W 9 | W 8 | SSW 18 | SE 7 | SSW 12 | SSW 19 | SW 14 | WNW 12 |
592 | 1033 | 10 | 9 | 6 | 99 | 373 | 738 | 759 | 421 | 2 | 10 | 2 | 2 | 1 | 63 | 9 | 187 | 424 | 469 | 14 | |
Swell 3 Height (m) Direction Period (s) | WNW 11 | WNW 11 | W 16 | W 16 | S 24 | SSW 22 | W 9 | SSW 16 | — | SSW 19 | — | W 10 | — | — | WNW 8 | W 8 | W 8 | SSW 22 | W 8 | SE 8 | — |
11 | 11 | 5 | 5 | 11 | 156 | 6 | 50 | — | 37 | — | 2 | — | — | 7 | 1 | 1 | 45 | 1 | 9 | — | |
Wind waves Height (m) Direction Period (s) | SSE 4 | SSE 5 | SSE 4 | — | — | SE 5 | SSE 5 | SSE 6 | — | SSE 5 | SSE 5 | SSE 7 | SSE 7 | SSE 7 | — | — | S 8 | S 8 | SSE 8 | SSE 7 | SSE 8 |
13 | 14 | 14 | — | — | 9 | 51 | 55 | — | 53 | 48 | 69 | 45 | 51 | — | — | 46 | 42 | 64 | 57 | 113 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 35 | 0 | 35 | 35 | 369 | 0 | 35 | 74 | 35 | 35 | 417 | 0 | 0 | 74 | 35 | 74 | 348 | 35 | 0 | 0 | 0 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Telescopes Surf forecast
The above surf forecast table for Telescopes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Telescopes can be found by selecting the local surf guide option on the grey menu. Our Telescopes 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 (Telescopes) 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 Telescopes 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 Telescopes, camping, hotels and holiday cottages in Mentawi Islands, consider staying in Padang which is 148 km (92 miles) away.











