Surf Forecasts:
Periscope Point surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 2 Sep, 8PM (local time) - 6.5ft (2.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 11PM (local time) - 10ft (3.0m), 17s period, SSW swell with 4,731 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 8PM (local time) - 6.5ft (2.0m), 16s period with SW swell.
Best Forecast Surf Conditions for Periscope Point this week:
The surf forecast for Periscope Point over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 02) at 8PM. The primary swell is predicted to be 2.0m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Periscope Point in the next 16 days are 3.0m 17s and forecast to arrive on Tuesday (Sep 08) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Friday (Sep 04) at 5AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 2nd Sep) | 6.5ft (2.0m) 16s |
| Best Surf | 8PM (Wed 2nd Sep) | 6.5ft (2.0m) 16s |
| Most Powerful | 11PM (Tue 8th Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Periscope Point has in store for us over the next couple of weeks.
We’ve got something brewing at this sheltered reef. The combined swell energy is strong to very strong throughout, hitting four-digit numbers most of the time and peaking well into the thousands. Water temp is sitting around 81°, which is about average for this time of year so you won’t need a thick suit.
Now, a heads up: Periscope Point is inconsistent and for advanced surfers only. It rarely fires, so when it’s on, you pay attention. But right out of the gate on Wednesday the 2nd of September morning, we’ve got a solid 7ft SW swell with a 17-second period – proper long-period groundswell, packing a huge 2548 combined energy. The wind is a cross-off from the ESE at 12 mph, keeping things clean. That’s big for this spot, well over the 7ft mark, so it’s experts-only territory.
Thursday morning (3rd) the swell drops a bit to 6ft SW, still clean with a cross-off wind, but the energy is still strong. By Thursday afternoon, it’s 5ft SW, clean and a touch lighter wind – a solid option if Wednesday’s size spooks you.
Friday (4th) into Saturday (5th) sees the swell staying in the 4ft to 6ft range, clean and manageable, but the real standout is the Tuesday the 8th of September. That morning we get a very long-period 20-second groundswell out of the SSW at 4ft, but the combined energy is a whopping 2308. Wind is cross-off and light. Afternoon jumps to 8ft SSW with 18 seconds and an energy reading of 4562 – that’s massive for this spot. Very clean conditions. This is the pick of the first week for experienced surfers.
Wednesday the 9th morning stays excellent with 8ft SSW, clean. Then the 12th of September Saturday brings another standout: a long-period 21-second SSW groundswell in the afternoon at 5ft, but the energy cranks up to 3294, and it’s glassy clean with a cross-off breeze. That longer period means smooth, powerful lines perfect for a reef like this.
Then on Sunday the 13th of September, things get serious. Morning brings a 10ft SW swell, 18 seconds, and energy hitting 5419 – that’s the peak of the whole run. Clean and cross-off. That is a proper big-swell day, experts only. Afternoon holds size at 10ft but the wind goes cross, still clean.
The rest of the second week, from the 14th to the 17th of September, stays solid: 6ft to 8ft SW swell, mostly clean cross-off winds, with excellent conditions. The morning of the 17th of September Thursday is another highlight – 8ft SW with a light breeze, glassy.
Overall, Periscope Point is looking inconsistent but when it comes alive, it comes alive proper. The 8th, 12th afternoon, and 13th morning are the true standouts – just be ready for a crowd because it is a rare break that can get crowded.
Stay safe out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 22°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 28°C on Sat morning, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 20 | SSW 18 | SSW 17 |
Wave Graph | |||||||||||||||||||||
2531 | 2384 | 1685 | 1420 | 1265 | 844 | 736 | 810 | 561 | 1143 | 1677 | 1582 | 1624 | 2573 | 2417 | 1822 | 1647 | 1496 | 1171 | 4428 | 3700 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross |
High Tide | 12:56PM2.53m | 1:05AM2.99m | 1:29PM2.29m | 1:37AM2.86m | 2:07PM2.01m | 2:16AM2.66m | 2:59PM1.72m | 3:12AM2.42m | 5:27PM1.51m | 5:11AM2.23m | 8:28PM1.73m | 7:29AM2.32m | 9:10PM2.05m | ||||||||
Low Tide | 6:50PM0.50m | 7:36AM0.41m | 7:17PM0.68m | 8:18AM0.60m | 7:45PM0.89m | 9:16AM0.83m | 8:17PM1.13m | 10:56AM1.02m | 9:15PM1.41m | 1:32PM0.95m | 00:58AM1.48m | 2:44PM0.71m | 2:37AM1.19m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | |
— | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 24 | 27 | 28 | 24 | 27 | 28 | 24 | 28 | 28 | 24 | 27 | 27 | 24 | 27 | 27 | 24 | 27 | 27 | 24 |
Feels °C | 28 | 27 | 26 | 27 | 27 | 26 | 28 | 28 | 26 | 29 | 28 | 26 | 28 | 27 | 26 | 27 | 27 | 25 | 28 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 18 | SSW 17 |
2531 | 2384 | 1685 | 1420 | 1265 | 844 | 736 | 810 | 561 | 1143 | 1677 | 1582 | 1624 | 2573 | 2417 | 1822 | 1647 | 1496 | 1137 | 4428 | 3700 | |
Swell 2 Height (m) Direction Period (s) | SSE 5 | — | SE 5 | SSE 5 | — | SE 6 | SSE 5 | E 4 | SW 13 | SSE 5 | E 5 | — | SSW 18 | SSW 13 | — | SW 24 | SSW 22 | SSW 21 | SSW 20 | — | — |
17 | — | 43 | 17 | — | 67 | 15 | 6 | 315 | 20 | 4 | — | 404 | 546 | — | 22 | 46 | 389 | 1171 | — | — | |
Swell 3 Height (m) Direction Period (s) | E 5 | — | — | E 5 | — | — | — | — | S 5 | E 5 | — | — | — | — | — | — | — | — | — | — | — |
13 | — | — | 13 | — | — | — | — | 25 | 5 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | ESE 5 | SE 5 | — | ESE 5 | SE 5 | ESE 5 | ESE 5 | SE 4 | SSE 5 | — | S 5 | SSE 4 | — | SSE 4 | — | — | — | — | — | SSE 9 | SSE 8 |
41 | 23 | — | 41 | 28 | 66 | 45 | 21 | 45 | — | 17 | 18 | — | 12 | — | — | — | — | — | 134 | 130 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 172 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 323 | 322 | 2 | 322 | 2 | 0 | 0 | 0 | 2 |
Best forecast wave conditions in Sumbawa | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Periscope Point Surf forecast
The above surf forecast table for Periscope Point provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Periscope Point can be found by selecting the local surf guide option on the grey menu. Our Periscope Point 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 (Periscope Point) 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 Periscope Point 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 Sumbawa? If you are looking for accommodation near Periscope Point, camping, hotels and holiday cottages in Sumbawa, consider staying in Bima which is 52 km (32 miles) away. Alternatively, find information about places to stay and car hire in Raba which is 56 km (35 miles) away











