
Surf Forecasts:
Telescopes surf forecast from 18 Jul 2026:
- Best quality surf: Monday 20 Jul, 7PM (local time) - 5.5ft (1.7m), 16s period, SSW 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★+): Saturday 18 Jul, 10AM (local time) - 3.5ft (1.1m), 14s 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 Saturday (Jul 18) at 10AM. The primary swell is predicted to be 1.1m and 14s 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-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Tuesday (Jul 21) at 4PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 18th Jul) | 3.5ft (1.1m) 14s |
| Best Surf | 7PM (Mon 20th Jul) | 5.5ft (1.7m) 16s |
| 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
Righto, Rusty here. Let's have a look at what's cookin' for the next couple of weeks.
The forecast is pretty much all about one spot: Telescopes. It's a consistent, exposed reef break that's gonna be pumping with south-west to south-south-west groundswell for a solid stretch. The water temp is about average for the time of year, so nothin' to write home about in that department.
The first proper session looks like Saturday morning (18 July). We've got a clean 3.6ft SW swell rollin' in – not huge, but with a nice 14-second period, it'll have some push. The wind is light and cross-off, so you're lookin' at clean lines. The combined wave energy is a solid 572 (moderate energy), so it's a good warm-up for the week ahead.
Monday (20 July) is where things start to get interesting. The swell jumps to 5.6ft from the SSW, and the period stretches out to 17 seconds – proper groundswell. The energy is ramping up strong at 1678 (very strong wave energy). The wind is light and cross-shore, so it'll be a bit lumpy but still very surfable. This is a solid pick for anyone who's comfortable on a reef.
Tuesday (21 July) is a standout. The morning starts with a clean 4.9ft SSW swell, cross-off wind, and 949 (moderate energy). Solid. But the afternoon is the real gem. The wind drops to glassy, the swell is 5.2ft, and the energy is 1066 (still strong). This is one of the best windows of the whole forecast – clean, glassy conditions on a quality reef break. That's a session you'll be talkin' about.
Sunday (26 July) sees a bit of a lull, with smaller 2.6ft swell and cross-on wind. Not much to get excited about. But don't worry, it doesn't last.
Monday (27 July) is a sneaky one. The swell is small at 2.3ft, but the period is a massive 20 seconds. The energy is 810 (strong), and with light cross-off wind, these long-period lines could be a treat for the patient surfer.
Now, the real fireworks are from Tuesday (28 July) through to Friday (31 July). This is the best run of the whole outlook. Tuesday sees 4.6-4.9ft SSW swell with 17-second periods and clean, cross-off winds. The energy is through the roof at 1563 (very strong). Wednesday is also clean with 4.3ft SSW swell. Thursday is another cracker with 3.0ft and 20-second period, glassy in the afternoon, energy 1465 (very strong). But Friday (31 July) is the big one. The swell hits 6.9ft from the SSW with an 18-second period, and the wind is glassy all day. The energy is a massive 2661 (very strong). This is big, powerful, and clean – experts only, but it will be world-class.
Saturday (1 August) is still solid with 5.6ft SSW swell and glassy conditions in the morning, but the wind swings in the afternoon. Sunday (2 August) finishes the run with a clean, glassy 5.2ft SW swell and 1508 (very strong energy).
So, the standout sessions are the Tuesday afternoon (21 July) and the Friday (31 July). The first one is clean and manageable, the second is a big, powerful, glassy dream for experienced surfers. Crowds are always possible at Telescopes, but with this much swell on offer, the crew will be out.
Short Range ForecastHeavy rain (total 39mm), heaviest during Fri night. Warm (max 29°C on Fri night, min 25°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 26mm), heaviest during Tue morning. Warm (max 28°C on Mon night, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 14 | SW 14 | SW 13 | SSW 13 | SW 13 | S 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | S 14 | SSW 14 | SSW 13 | SSW 13 | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
Wave Graph | |||||||||||||||||||||
529 | 463 | 412 | 458 | 388 | 734 | 1630 | 1411 | 1193 | 899 | 1048 | 490 | 367 | 294 | 245 | 490 | 610 | 692 | 539 | 480 | 408 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 2:25PM0.54m | 3:13AM0.93m | |||||||
Low Tide | 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 | 8:54AM0.43m | 7:08PM0.31m | ||||||||
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 | 2 | 4 | 12 | 8 | 1 | — | — | 1 | 6 | 6 | 3 | 3 | — | 1 | 5 | 2 | — | 12 | 3 | 14 | 13 |
Temp °C | 28 | 28 | 28 | 26 | 26 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 28 | 27 | 28 | 27 | 27 |
Feels °C | 31 | 31 | 31 | 28 | 27 | 30 | 31 | 31 | 32 | 30 | 31 | 30 | 30 | 30 | 28 | 27 | 29 | 27 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | S 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | S 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 14 | SW 16 | SW 16 | SW 15 | SW 15 | SSE 10 |
529 | 463 | 412 | 458 | 388 | 734 | 1630 | 1411 | 1193 | 899 | 1048 | 490 | 367 | 294 | 213 | 120 | 64 | 66 | 54 | 137 | 408 | |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | S 18 | SSW 13 | S 7 | S 8 | S 7 | W 11 | WNW 11 | S 18 | WNW 10 | S 16 | WNW 10 | SSW 12 | WNW 11 | SW 13 | WSW 18 | S 18 | SW 15 |
37 | 49 | 57 | 29 | 225 | 290 | 39 | 29 | 27 | 2 | 11 | 25 | 10 | 46 | 21 | 26 | 23 | 46 | 30 | 56 | 149 | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | W 14 | SSE 7 | WSW 5 | W 7 | WNW 8 | WNW 7 | W 7 | S 20 | WNW 10 | SW 19 | WNW 11 | WSW 18 | WNW 10 | W 7 | WNW 10 | W 10 | W 10 | S 16 |
6 | 6 | 6 | 4 | 29 | 30 | 9 | 6 | 5 | 1 | 7 | 10 | 15 | 23 | 31 | 20 | 1 | 10 | 8 | 8 | 133 | |
Wind waves Height (m) Direction Period (s) | — | — | NNW 3 | WNW 4 | WSW 5 | — | — | — | — | SSE 7 | S 5 | SSE 7 | SSE 7 | SSE 7 | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | — |
— | — | 2 | 21 | 61 | — | — | — | — | 47 | 33 | 82 | 91 | 73 | 245 | 490 | 610 | 692 | 539 | 480 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 31 | 31 | 40 | 514 | 31 | 29 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 35 | 35 | 417 | 35 | 148 | 35 | 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.










