
Surf Forecasts:
Periscope Point surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 11AM (local time) - 6ft (1.8m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 5AM (local time) - 7ft (2.2m), 19s period, SW swell with 3,490 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 11AM (local time) - 6ft (1.8m), 14s 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 Wednesday (Aug 12) at 11AM. The primary swell is predicted to be 1.8m and 14s period with a secondary swell of 1.4m and 17s. 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 2.2m 19s and forecast to arrive on Wednesday (Aug 19) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Aug 18) at 8AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 12th Aug) | 6ft (1.8m) 14s |
| Best Surf | 11AM (Wed 12th Aug) | 6ft (1.8m) 14s |
| Most Powerful | 5AM (Wed 19th Aug) | 7ft (2.2m) 19s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let’s have a yarn about what’s coming up for Periscope Point.
We’ve got a solid run of surf ahead, starting from Wednesday the 12th of August and running right through for a good couple of weeks. There’s no quiet gap at the start; the swell is on from the get-go. The water temperature is sitting around 80°, pretty much average for this time of year, so nothing unusual there.
Wednesday morning kicks things off with a clean 6ft SSW swell, period of 14 seconds – that’s a proper groundswell with decent energy (2443). The wind is a cross-off breeze from the ESE at 9 mph, which will keep things tidy. This is a reef break that’s sheltered and needs a southerly direction to light up, and we’ve got it. It’s an advanced wave, inconsistent, and can get crowded sometimes, so keep your eyes open. The swell sticks around in the 6ft to 7ft range through Wednesday afternoon and all day Thursday the 13th, with light to gentle cross-off breezes, keeping the surface glassy and clean. Thursday afternoon is a real standout – 7ft SSW swell at 16 seconds, light 6 mph wind, energy reading 2136 – that’s fantastic quality for experienced surfers.
Friday the 14th and Saturday the 15th hold similar clean conditions, with swell heights around 6ft to 7ft and those lovely cross-off winds. Saturday afternoon sees the energy climb to 2395 with a 7ft, 17-second SSW groundswell and light winds – that’s the pick of the first few days. Sunday the 16th stays solid, with 7ft SSW swell and clean conditions, though the morning has some clouds.
Monday the 17th eases slightly to 5ft-5ft, but still clean and very good. Then Tuesday the 18th brings a shift: the direction goes a touch more SW, with the morning a bit smaller at 4ft but a long 16-second period, and then the afternoon pumps up to 6ft SW with energy at 2538 – another excellent session for the experienced crew.
Now, Wednesday the 19th and Thursday the 20th see the swell jump to 8ft-8ft SW, with periods up to 18 seconds. That’s big, powerful stuff – over 8ft is only for experts, and the wind picks up to 12 mph. The energy readings hit 3825 and 3850, which is very strong, but the conditions are described as marginal for tide or setup. This is a reef break, so that long-period SW groundswell might wall up nicely, but the stronger cross-off wind could make it a handful. For most, this period looks more interesting for a kite session than paddle surfing.
It eases back on Friday the 21st to a cleaner 7ft SW with gentle winds, and Saturday the 22nd is a true standout for the big-wave hunters: 10ft SW swell, 17-second period, energy at 4609 – that’s massive. The morning is clean with cross-off winds, but the afternoon goes cross-shore, creating a bit of chop. Still, for experts only, that morning window is the best of the whole run.
The final week from Sunday the 23rd through to Thursday the 27th holds consistent 5ft to 8ft SW and SSW swells, mostly clean with gentle cross-off winds, but a few afternoons get a cross-shore breeze that messes with the surface. The best of that later period is Tuesday the 25th, with 7ft SSW swell at 16 seconds, clean and solid energy at 2633.
If I had to pick one or two standouts, it’d be Saturday the 22nd morning for the sheer size and power (10ft, clean, cross-off), and Thursday the 13th afternoon for that sweet, clean 7ft groundswell with light winds – both are absolute crackers for the advanced crew.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Wed afternoon, min 23°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Sat afternoon, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SW 16 | SSW 16 |
Wave Graph | |||||||||||||||||||||
1336 | 1138 | 742 | 2122 | 2136 | 2033 | 1788 | 1241 | 1087 | 2196 | 2377 | 2084 | 1982 | 1957 | 1496 | 1057 | 934 | 607 | 897 | 1672 | 1953 | |
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 | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | glassy | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 9:33AM2.85m | 10:34PM2.43m | 10:21AM3.00m | 11:08PM2.67m | 11:03AM3.06m | 11:39PM2.86m | 11:42AM3.02m | 00:10AM2.97m | 12:17PM2.90m | 00:40AM3.00m | 12:51PM2.71m | 1:09AM2.95m | 1:23PM2.47m | 1:38AM2.82m | |||||||
Low Tide | 4:19PM0.23m | 4:14AM0.76m | 4:55PM0.11m | 4:58AM0.54m | 5:27PM0.07m | 5:38AM0.39m | 5:58PM0.11m | 6:16AM0.33m | 6:27PM0.21m | 6:52AM0.36m | 6:54PM0.37m | 7:27AM0.45m | 7:19PM0.55m | ||||||||
6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | |
— | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 24 | 27 | 28 | 24 | 27 | 28 | 24 | 28 | 29 | 24 | 28 | 28 | 24 | 28 | 28 | 24 | 28 | 28 | 24 |
Feels °C | 27 | 28 | 26 | 29 | 29 | 26 | 28 | 29 | 27 | 30 | 30 | 27 | 30 | 30 | 27 | 30 | 29 | 27 | 30 | 30 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SW 16 | SSW 16 |
1336 | 1138 | 742 | 2122 | 2136 | 2033 | 1788 | 1241 | 1087 | 2196 | 2377 | 2084 | 1982 | 1957 | 1496 | 1057 | 934 | 607 | 897 | 1672 | 1953 | |
Swell 2 Height (m) Direction Period (s) | SSW 17 | SSW 17 | SSW 16 | — | — | SSE 9 | SSE 7 | SSW 21 | SSW 19 | SSE 5 | SSE 6 | SSE 6 | W 20 | — | — | SE 6 | SSW 20 | SSW 18 | SW 13 | SW 21 | SW 20 |
1107 | 762 | 566 | — | — | 86 | 57 | 302 | 774 | 13 | 18 | 12 | 7 | — | — | 15 | 38 | 408 | 400 | 856 | 881 | |
Swell 3 Height (m) Direction Period (s) | — | — | SSE 5 | — | — | SSW 24 | SW 22 | SSE 7 | SSE 4 | — | — | — | — | — | — | SW 26 | SW 24 | SW 24 | SW 21 | E 4 | — |
— | — | 55 | — | — | 54 | 118 | 38 | 10 | — | — | — | — | — | — | 26 | 90 | 141 | 658 | 10 | — | |
Wind waves Height (m) Direction Period (s) | — | SSE 5 | — | E 5 | ESE 5 | — | — | — | — | — | — | — | — | — | ESE 5 | ESE 5 | ESE 5 | ESE 4 | ESE 5 | — | — |
— | 34 | — | 7 | 13 | — | — | — | — | — | — | — | — | — | 25 | 25 | 19 | 15 | 42 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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











