
Surf Forecasts:
Periscope Point surf forecast from 8 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 5PM (local time) - 10ft (3.0m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 5AM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,209 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 8AM (local time) - 7ft (2.2m), 16s period with SSW 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 Sunday (Aug 09) at 8AM. The primary swell is predicted to be 2.2m and 16s period. The wind is predicted to be 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 (Aug 11) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Sunday (Aug 09) at 8AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 9th Aug) | 7ft (2.2m) 16s |
| Best Surf | 5PM (Tue 11th Aug) | 10ft (3.0m) 16s |
| Most Powerful | 5AM (Tue 11th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about Periscope Point.
We’ve got a solid run of surf coming in over the next couple of weeks, but it’s not for the faint of heart. This is a sheltered reef break, advanced only, and it’s inconsistent, so you have to be ready to wait for the sets, but when they come, they come with serious power. The water’s sitting at about 80° right now, which is about average for this time of year, so nothing weird going on there.
The main story is a long-period groundswell from the SSW, and it’s going to be pumping. Tuesday the 11th is the standout – the afternoon session in particular. You’re looking at a 10 ft SSW swell with a 16-second period, and the combined wave energy is absolutely cooking at 6178 (strong to very strong energy). Winds are a light, cross-off breeze out of the SSE, so the face should be clean and lined up. This is proper heavy, expert-level stuff.
Monday the 10th afternoon is also a gem – 8 ft SSW with an 18-second period, that’s a very long period groundswell. The energy jumps to 4129 (moderate to strong). At a reef point like this, that long period will wrap in beautifully and give you some proper walls. Again, light cross-off winds. Crowds are sometimes a thing here, so you might have a few other crew in the water, but nothing too hectic.
Wednesday the 19th is another big pulse, 10 ft from the SW with a 17-18 second period and energy over 5000, but the tide conditions are flagged as questionable, so you’ll need to pick your moment carefully. Still, that’s a lot of water moving.
After that first week, the second week settles down a bit. Still plenty of good 7 ft to 8 ft SSW swell with clean light winds, but the energy drops back into the 1000-2000 range, so it’s not as punchy. Still excellent for experienced surfers, just not the same raw power as that Tuesday the 11th.
If you’re a beginner, stay out of the water. Over 5 ft and it’s only for experts. Over 8 ft, definitely not a learner’s wave. And with such long periods (14 to 21 seconds), the sets will be clean but widely spaced. At a reef point like Periscope Point, that long period is a blessing – it’ll hold up and give you a nice wall, not close out like it would at a beach break.
The run ends around the 24th with smaller, weaker surf and a bit more wind, so the magic fades out by then.
Rusty out.
Short Range ForecastMostly dry. Warm (max 27°C on Sun afternoon, min 23°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Fri afternoon, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 15 | SSW 14 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 |
Wave Graph | |||||||||||||||||||||
2472 | 2486 | 1911 | 1468 | 4129 | 4959 | 4592 | 4511 | 3182 | 1143 | 2209 | 1684 | 1999 | 2331 | 2191 | 2136 | 1516 | 1208 | 2196 | 2146 | 2033 | |
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-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | glassy |
High Tide | 8:02PM1.63m | 7:13AM2.45m | 9:16PM1.88m | 8:35AM2.64m | 9:59PM2.16m | 9:33AM2.85m | 10:34PM2.43m | 10:21AM3.00m | 11:08PM2.67m | 11:03AM3.06m | 11:39PM2.86m | 11:42AM3.02m | 00:10AM2.97m | ||||||||
Low Tide | 1:22PM0.88m | 00:10AM1.42m | 2:47PM0.65m | 2:15AM1.28m | 3:39PM0.41m | 3:24AM1.03m | 4:19PM0.23m | 4:14AM0.76m | 4:55PM0.11m | 4:58AM0.54m | 5:27PM0.07m | 5:38AM0.39m | 5:58PM0.11m | ||||||||
6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 23 | 25 | 26 | 24 | 26 | 27 | 24 | 27 | 27 | 24 | 27 | 27 | 23 | 27 | 28 | 24 | 28 | 28 | 24 |
Feels °C | 26 | 27 | 25 | 26 | 27 | 27 | 27 | 28 | 26 | 28 | 27 | 26 | 28 | 27 | 25 | 29 | 29 | 27 | 30 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 |
2472 | 2486 | 1911 | 1468 | 4129 | 4959 | 4592 | 4511 | 3182 | 1143 | 2209 | 1684 | 1999 | 2331 | 2191 | 2136 | 1516 | 1208 | 2196 | 2146 | 2033 | |
Swell 2 Height (m) Direction Period (s) | SE 5 | — | SSE 5 | SSW 19 | — | — | — | SSW 19 | — | SSW 17 | SSW 17 | E 5 | SSE 5 | — | SSW 24 | SW 22 | SSW 21 | SSW 19 | SSE 5 | SSE 5 | — |
23 | — | 17 | 1315 | — | — | — | 1667 | — | 1107 | 762 | 4 | 13 | — | 54 | 118 | 300 | 584 | 17 | 14 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | E 6 | ESE 5 | — | — | — | — | — | SSE 6 | — | E 5 | — | — | SSW 24 | — | — | — | — | — | — |
— | — | 15 | 16 | — | — | — | — | — | 4 | — | 7 | — | — | 54 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SE 4 | SE 5 | — | — | — | — | SSE 4 | — | SE 4 | SSE 4 | — | — | — | — | — | SSE 7 | SSE 4 | — | — | — |
— | 21 | 37 | — | — | — | — | 16 | — | 23 | 16 | — | — | — | — | — | 26 | 11 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 179 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 0 |
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











