Surf Forecasts:
Telescopes surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 10AM (local time) - 8ft (2.4m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 10AM (local time) - 8ft (2.4m), 16s period, SSW swell with 3,005 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 10AM (local time) - 8ft (2.4m), 16s 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 Thursday (Aug 20) at 10AM. The primary swell is predicted to be 2.4m and 16s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.4m and 10s is also forecast. 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 2.4m 16s and forecast to arrive on Thursday (Aug 20) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Monday (Aug 24) at 10AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 20th Aug) | 8ft (2.4m) 16s |
| Best Surf | 10AM (Thu 20th Aug) | 8ft (2.4m) 16s |
| Most Powerful | 10AM (Thu 20th Aug) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for Telescopes over the next 16 days.
The Lowdown
G'day, I'm Rusty, and here's how the surf's shaping up.
We've got a solid, long-running swell train from the south-southwest, and it's pointing straight at Telescopes. This is a consistent, advanced reef break that's exposed to the swell, so it's gonna be handling all this energy. The water temp is sitting about average for the season.
The real standout is the morning of Thursday, August 31st. We're looking at a clean 8ft SSW groundswell with a very long 18-second period, glassy conditions, and a massive 3674 combined energy. That's a serious day for experienced surfers only. The morning of August 20th is also a top pick, with a 8ft SSW swell, 16-second period, and 3063 energy under cross-offshore winds. It's all clean, but the swell is big and powerful.
The pattern is a drawn-out run of solid, consistent SSW groundswell. The first week, from August 20th through the 25th, we have waves every day, mostly in the 6ft to 8ft range with long periods of 14 to 16 seconds. The winds are a mix of cross-offshore and cross, keeping things reasonably clean but often a bit chunky. The combined energy is strong, sitting between 1000 and 3000 for most of that time.
After the 25th, the swell drops a little, with more days in the 3ft to 6ft range, but the energy stays moderate to strong. The wind stays mostly cross-offshore or light cross, which is a positive. The 31st of August is the absolute peak, but the morning of the 28th of August is worth a mention too, with a clean 5ft SSW swell and 1296 energy. The morning of the 30th of August also has a very long 22-second period and glassy conditions, but the swell is smaller at 3ft. The 1st of September morning has a clean 7ft SSW swell with 2427 energy.
The second week, into early September, the swell fades a bit but still has some clean windows. The 3rd of September morning has a small 4ft SW swell, but with clean conditions. The 4th of September morning is the last we see, with a 3ft SSW swell.
The only real bummer is the afternoon of the 25th, where swing cross-shore winds and a drop in energy make it a write-off, and the 26th is pretty weak with low energy. Crowds are sometimes a factor at Telescopes, so keep that in mind.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Wed night. Warm (max 28°C on Thu morning, min 27°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 56mm), heaviest during Sun night. Warm (max 28°C on Mon afternoon, min 26°C on Sat 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 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 14 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 16 |
Wave Graph | |||||||||||||||||||||
3005 | 2716 | 2295 | 1676 | 1208 | 2394 | 2054 | 1682 | 1321 | 1172 | 743 | 1018 | 661 | 1707 | 880 | 929 | 742 | 603 | 472 | 479 | 362 | |
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-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross |
High Tide | 10:39AM0.65m | 11:54PM0.90m | 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 | ||||||||
Low Tide | 4:58AM0.35m | 4:30PM0.22m | 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 | |||||||
6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 6:25 | — | — | 6:25 | — | — | 6:25 | — | — | 6:25 | — | — | 6:25 | — | — | 6:24 | — | — | 6:24 | — | |
mm | — | — | — | — | 2 | 6 | 3 | — | 8 | 7 | 1 | 13 | 10 | 1 | 14 | 2 | — | — | 1 | — | 2 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 29 | 29 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 14 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 16 |
3005 | 2716 | 2295 | 1676 | 1208 | 2394 | 2054 | 1682 | 1321 | 1172 | 743 | 1018 | 661 | 1707 | 880 | 929 | 742 | 603 | 472 | 479 | 362 | |
Swell 2 Height (m) Direction Period (s) | WSW 10 | WSW 10 | S 22 | S 19 | S 18 | WNW 10 | WNW 10 | WNW 9 | S 18 | S 20 | S 19 | S 18 | SSW 13 | W 10 | W 10 | W 9 | W 9 | S 7 | S 8 | S 8 | SSE 8 |
33 | 37 | 37 | 592 | 1033 | 10 | 9 | 8 | 99 | 373 | 738 | 759 | 421 | 8 | 2 | 2 | 2 | 68 | 60 | 46 | 90 | |
Swell 3 Height (m) Direction Period (s) | — | — | WNW 11 | WNW 11 | WNW 11 | W 16 | W 16 | S 24 | SSW 22 | WNW 9 | SSW 16 | — | SSW 19 | W 10 | SW 16 | — | — | S 17 | SSW 18 | SE 8 | SW 12 |
— | — | 11 | 11 | 11 | 5 | 5 | 11 | 156 | 7 | 50 | — | 37 | 2 | 10 | — | — | 6 | 63 | 16 | 149 | |
Wind waves Height (m) Direction Period (s) | SW 10 | SW 10 | SSE 4 | SE 5 | SSE 5 | SSE 5 | — | SSE 6 | SE 6 | SSE 5 | SSE 6 | — | SSE 5 | SSE 7 | SSE 7 | S 7 | S 7 | — | — | — | — |
25 | 28 | 14 | 24 | 23 | 26 | — | 22 | 18 | 51 | 65 | — | 55 | 108 | 86 | 103 | 86 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 3 | 0 | 35 | 35 | 0 | 3 | 35 | 0 | 35 | 74 | 0 | 35 | 417 | 35 | 35 | 417 | 74 | 35 | 35 | 35 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











