
Surf Forecasts:
Telescopes surf forecast from 17 Jul 2026:
- Best quality surf: Sunday 19 Jul, 10PM (local time) - 3.5ft (1.0m), 19s period, S swell with glassy winds.
- Most powerful swell: Monday 20 Jul, 10AM (local time) - 5.5ft (1.7m), 17s period, SSW swell with 1,630 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 10AM (local time) - 4ft (1.2m), 16s period with SW 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 (Jul 17) at 10AM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 0.6m and 7s. 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 1.7m 17s and forecast to arrive on Monday (Jul 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 1.4m 6s period and expected on Thursday (Jul 23) at 7AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 17th Jul) | 4ft (1.2m) 16s |
| Best Surf | 10PM (Sun 19th Jul) | 3.5ft (1.0m) 19s |
| Most Powerful | 10AM (Mon 20th Jul) | 5.5ft (1.7m) 17s |
Table - best surf conditions forecast for Telescopes over the next 16 days.
The Lowdown
Hey, I'm Rusty. Let's break it down.
Alright, mate, we've got a solid run coming up at Telescopes, a reef break that's exposed to the SW swell. The water temp is about average for this time of year, nothing unusual there. The first week kicks off with a bit of a slow start, but the real muscle shows up next week.
The action starts Friday morning, July 17th. We're looking at a 4ft SW groundswell with a very long period of 16 seconds. The energy is moderate (761), and with a light cross-offshore breeze, it's clean. This is a good, solid reef wave, so the long period will make it wrap in nicely. Friday afternoon gets even better – the wind goes glassy, making it picture-perfect.
Saturday, July 18th, keeps the good times rolling with a 4ft SW swell, still a long 14-second period. The morning is glassy again, absolute magic. The afternoon gets a bit of a side-shore wind, but it's still surfable.
Sunday, July 19th, is a write-off. The wind picks up onshore and the surf gets choppy and messy. Give it a miss.
Monday, July 20th, is where we start to see the real juice. The swell jumps to 6ft from the SSW with a 17-second period, and the energy is strong (1668). This is for the advanced crew – it's a powerful wave. The wind is light offshore in the morning, then glassy in the afternoon. This is a true standout.
Tuesday, July 21st, holds at 5ft with a clean 14-second period. It's still a bit of a handful for beginners, but the wind is offshore and glassy, so the conditions are pristine.
The forecast drops off a bit Wednesday through Friday, July 22nd to 24th. The swell hangs around 3ft to 6ft, but the wind is up and the period drops, making it less appealing. The energy is moderate to weak, and the conditions are just marginal.
Now, the second week gets interesting again. Saturday, July 25th, the afternoon cleans up with a light breeze and a 5ft swell, bringing back some hope. Sunday, July 26th, and Monday, July 27th, are small and glassy – perfect for a longboard or a fish.
The pick of the entire 16-day window, however, is the last few days of July and the start of August. Thursday, July 30th, the morning has a 3ft SSW swell with a massive 20-second period, but it's the afternoon that's a standout: 4ft, 21-second period, glassy conditions, and a massive energy reading of 1705. This is world-class stuff.
Then, Friday, July 31st, is a barn-burner. We're looking at a 7ft SSW groundswell, 18 to 19 seconds, and energy readings over 2700. The wind is glassy. This is expert territory – it's a big, powerful, long-period reef wave. Absolutely pumping. Saturday, August 1st, holds at 7ft, still glassy, and still a ripper.
So, the standout sessions are the glassy windows on Monday, July 20th, and then the whole run from Thursday, July 30th, through Saturday, August 1st. A word of caution: the crowds at Telescopes can be a factor, so be ready to share the peak. Get on it, but respect the reef.
Rusty.
Short Range ForecastHeavy rain (total 37mm), heaviest during Thu night. Warm (max 29°C on Fri morning, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 46mm), heaviest during Tue afternoon. Warm (max 28°C on Mon afternoon, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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) | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | S 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSE 11 | SSE 10 | SSE 10 |
Wave Graph | |||||||||||||||||||||
711 | 695 | 536 | 529 | 463 | 412 | 458 | 388 | 734 | 1630 | 1411 | 1341 | 899 | 767 | 490 | 390 | 317 | 217 | 744 | 574 | 480 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | glassy | glassy | on | cross-on | cross-on | on | cross-off | cross-off | glassy | off | off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:15AM1.30m | 8:50PM0.96m | 8:57AM1.22m | 9:36PM0.99m | 9:38AM1.10m | 10:22PM1.00m | 10:19AM0.97m | 11:10PM0.99m | 11:00AM0.83m | 00:02AM0.96m | 11:49AM0.70m | 1:01AM0.93m | 12:56PM0.60m | 2:07AM0.92m | |||||||
Low Tide | 2:37PM0.01m | 2:23AM0.11m | 3:12PM0.04m | 3:11AM0.18m | 3:46PM0.08m | 4:00AM0.25m | 4:18PM0.13m | 4:50AM0.33m | 4:51PM0.18m | 5:48AM0.39m | 5:28PM0.23m | 7:00AM0.43m | 6:11PM0.28m | ||||||||
6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | |
— | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | |
mm | 1 | — | 7 | 3 | 2 | 10 | 2 | 5 | 3 | 1 | 5 | 6 | 7 | 7 | 4 | 6 | 7 | 5 | — | 1 | — |
Temp °C | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 28 | 28 |
Feels °C | 34 | 33 | 33 | 32 | 31 | 31 | 29 | 29 | 32 | 30 | 32 | 31 | 30 | 31 | 29 | 31 | 30 | 27 | 29 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | S 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 15 | SW 16 | SSW 13 |
711 | 695 | 536 | 529 | 463 | 412 | 458 | 388 | 734 | 1630 | 1411 | 1341 | 899 | 767 | 490 | 390 | 317 | 217 | 72 | 64 | 70 | |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | S 7 | S 7 | SSE 7 | S 7 | S 18 | SSW 13 | SSE 7 | S 7 | S 7 | WNW 9 | WNW 8 | S 18 | WNW 10 | S 16 | WNW 10 | WNW 10 | WNW 11 | SW 16 |
43 | 52 | 37 | 36 | 36 | 41 | 26 | 225 | 290 | 21 | 39 | 43 | 8 | 7 | 56 | 10 | 46 | 21 | 10 | 11 | 66 | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | S 7 | S 7 | WNW 7 | WNW 8 | W 7 | W 9 | S 20 | W 10 | SW 19 | WNW 11 | WSW 18 | SW 18 | S 15 | WNW 10 |
7 | 7 | 6 | 6 | 6 | 6 | 5 | 35 | 24 | 5 | 13 | 4 | 2 | 7 | 8 | 15 | 12 | 31 | 12 | 4 | 10 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NW 3 | — | NW 4 | W 4 | — | SSE 7 | SSE 7 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 11 | SSE 10 | SSE 10 |
— | — | — | — | — | — | 2 | — | 9 | 12 | — | 48 | 62 | 55 | 84 | 73 | 99 | 154 | 744 | 574 | 480 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 11 | 31 | 31 | 40 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 35 | 3 | 148 | 148 | 417 | 35 |
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.










