
Surf Forecasts:
Periscope Point surf forecast from 5 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 5PM (local time) - 10ft (3.0m), 19s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 5PM (local time) - 10ft (3.0m), 19s period, SSW swell with 5,444 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 8AM (local time) - 6.5ft (2.0m), 18s 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 Thursday (Aug 06) at 8AM. The primary swell is predicted to be 2.0m and 18s period with a secondary swell of 0.8m and 6s. 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 19s and forecast to arrive on Tuesday (Aug 11) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Friday (Aug 07) at 5AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 6th Aug) | 6.5ft (2.0m) 18s |
| Best Surf | 5PM (Tue 11th Aug) | 10ft (3.0m) 19s |
| Most Powerful | 5PM (Tue 11th Aug) | 10ft (3.0m) 19s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
Hey, Rusty here. We've got a solid run of surf on the cards at Periscope Point, a reef set-up for the experienced crew only. It's an inconsistent spot, so when it fires you better be on it. The water temp is sitting at 26°, which is about average for this time of year, so no surprises.
The pattern kicks off Thursday the 6th of August with a strong SSW groundswell, pushing 7ft to 7ft with a period of 17 to 18 seconds. That's proper long-period energy – the kind that draws up lines of swell, especially on a reef like this. The cross-off wind from the SSE at 9 mph will keep the surface clean, but this is big, powerful stuff. With combined swell energy already in the 2700s, it's solid.
Friday the 7th through to Sunday the 9th stays on, with heights holding 7ft to 8ft from the SSW, period dropping slightly to 16 seconds but still a legitimate groundswell. The combined energy climbs into the 2900s and even tops 3200 on Friday afternoon. Winds stay cross-off, so the faces will be clean. This is top-tier for advanced surfers.
Monday the 10th is a standout morning. The swell drops to 5ft, but the period stretches to 19 seconds – that is a very long period groundswell, ideal for the point break nature of this reef. The combined energy jumps to 3258, and with only a light breeze from the SSE at 6 mph, conditions will be glassy. Monday afternoon sees the swell jump to 10ft, still with a long 18-second period and a light S wind. The combined energy hits 5050, signalling strong wave energy. This is a big day, experts only.
Tuesday the 11th holds 10ft with a 17 to 19-second period. The combined energy peaks at 7111 on the afternoon session – that's very strong swell energy. Some clouds, but cross-off winds keep it rideable for those with the skills.
After that, the swell backs off a touch from Wednesday the 12th to Friday the 14th, with heights between 6ft and 8ft, periods 14 to 17 seconds. The energy stays around the 2100 to 3300 range. Light and gentle cross-off winds, clean conditions. Still very good.
Saturday the 15th and Sunday the 16th get a little more marginal, heights 6ft to 7ft but the period dips around 15 to 17 seconds. The wind picks up a bit on Sunday morning to 12 mph from the ESE, but it's still cross-off. Energy stays in the 2200s to 2700s. Worth a look, but less quality.
Monday the 17th and Tuesday the 18th drop off more, with heights around 5ft to 6ft and periods 14 to 16 seconds. Combined energy falls to the 1100 to 1800 range. Wednesday the 19th and Thursday the 20th see a nice resurgence: 7ft to 8ft from the SW, periods 15 to 16 seconds, light breeze conditions. Energy climbs to 3769, so moderate to strong. Great turn-around.
But the absolute standout is Friday the 21st of August. The morning shows 12ft from the SSW with an 18-second period, combined energy screaming at 8579. Light breeze from the SE at 6 mph. That's the call of the window – massive, clean, long-period groundswell on an inconsistent reef. It doesn't get much better for the experienced surfer. The afternoon stays solid at 10ft with a 17-second period and 5533 energy. Mark that date.
In summary, the best on offer is Monday the 10th for that glassy, very long-period beauty, and Friday the 21st for the biggest, cleanest swell of the forecast. Crowds are only sometimes at Periscope Point, but with this much quality on the cards, expect a few others in the know.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 28°C on Fri afternoon, min 22°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 18 | SSW 18 | SSW 17 | SSW 19 | SSW 16 | SSW 14 | SSW 16 | SSW 14 |
Wave Graph | |||||||||||||||||||||
2768 | 2731 | 2206 | 2904 | 3217 | 3543 | 3062 | 3113 | 2503 | 2359 | 2123 | 1761 | 1712 | 5050 | 5392 | 4552 | 5444 | 3182 | 1283 | 2082 | 1003 | |
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 | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 2:33PM2.07m | 2:54AM2.64m | 3:29PM1.79m | 3:50AM2.51m | 5:17PM1.57m | 5:21AM2.40m | 8:02PM1.63m | 7:13AM2.45m | 9:16PM1.88m | 8:35AM2.64m | 9:59PM2.16m | 9:33AM2.85m | 10:34PM2.43m | ||||||||
Low Tide | 8:47AM0.73m | 8:22PM0.85m | 9:46AM0.85m | 8:58PM1.06m | 11:15AM0.95m | 9:55PM1.28m | 1:22PM0.88m | 00:10AM1.42m | 2:47PM0.65m | 2:15AM1.28m | 3:39PM0.41m | 3:24AM1.03m | 4:19PM0.23m | 4:14AM0.76m | |||||||
6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | |
— | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | |
mm | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 24 | 27 | 28 | 24 | 27 | 27 | 23 | 27 | 27 | 24 | 27 | 27 | 24 | 26 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 27 | 26 | 26 | 28 | 29 | 27 | 28 | 28 | 25 | 28 | 27 | 26 | 28 | 27 | 26 | 27 | 26 | 25 | 26 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 18 | SSW 18 | SSW 17 | SSW 19 | SSW 16 | SSW 14 | SSW 16 | SSW 14 |
2768 | 2731 | 2206 | 2904 | 3217 | 3543 | 3062 | 3113 | 2503 | 2359 | 2123 | 1761 | 1546 | 5050 | 5392 | 4552 | 5444 | 3182 | 1283 | 2082 | 1003 | |
Swell 2 Height (m) Direction Period (s) | SE 5 | — | SE 6 | SE 6 | — | — | ESE 5 | WSW 20 | SSE 5 | SSE 5 | — | SSE 5 | SSW 19 | — | — | — | SSW 19 | — | SSW 17 | SSW 22 | SSW 17 |
28 | — | 38 | 26 | — | — | 31 | 40 | 19 | 33 | — | 17 | 1712 | — | — | — | 1667 | — | 1094 | 46 | 808 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | E 5 | — | — | — | — | E 6 | — | — | — | — | — | — | S 24 | — | — |
— | — | — | — | — | — | 14 | — | — | — | — | 15 | — | — | — | — | — | — | 11 | — | — | |
Wind waves Height (m) Direction Period (s) | — | SE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | — | — | — | — | SE 5 | SE 5 | — | — | — | — | — | — | E 5 | — | E 4 |
— | 27 | 59 | 46 | 33 | 55 | — | — | — | — | 23 | 38 | — | — | — | — | — | — | 11 | — | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 148 | 0 | 0 | 0 | 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











