
Surf Forecasts:
Periscope Point surf forecast from 11 Sep 2026:
- Best quality surf: Friday 11 Sep, 8PM (local time) - 6.5ft (2.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 5PM (local time) - 7.5ft (2.3m), 18s period, SW swell with 3,123 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 5PM (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 Friday (Sep 11) at 5PM. The primary swell is predicted to be 2.0m and 16s period with a secondary swell of 0.5m and 5s. 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 2.3m 18s and forecast to arrive on Sunday (Sep 13) 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 Thursday (Sep 17) at 2AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Fri 11th Sep) | 6.5ft (2.0m) 16s |
| Best Surf | 8PM (Fri 11th Sep) | 6.5ft (2.0m) 16s |
| Most Powerful | 5PM (Sun 13th Sep) | 7.5ft (2.3m) 18s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve got a solid run of swell lined up for Periscope Point, a reef setup that’s one for the experienced crew. The water’s sitting at 80°, which is bang on average for this time of year, so no surprises there. The swell energy’s packing a punch too—think moderate to very strong, with combined numbers bouncing around the 1700 to 3100 mark throughout the period.
Kicking off Friday the 11th, we’ve got a 7ft SW groundswell rolling in with a 16-second period. That’s a long period, meaning proper energy and shape, but it’s a sheltered spot so it’ll wrap in nicely. Winds are cross-offshore from the SE, keeping it clean. The energy’s strong at 2225, and while it’s inconsistent, when it fires it’ll be quality. Saturday the 12th sees a touch less size—5ft to 5ft SW—but still long-period and glassy with those light cross-off breezes. Good, clean fun.
The standout window? Sunday the 13th morning. We’re looking at 6ft SW swell, period stretching to 18 seconds, and combined energy of 2473. That’s a serious groundswell, and with gentle offshore winds it’ll be clean as a whistle. Sets might have longer waits, but the payoff will be worth it for the advanced crew. Later that afternoon it pushes up to 8ft with 18 seconds and 3123 energy, though the wind picks up a notch—still surfable but starting to get a bit lumpy.
Monday the 14th and Tuesday the 15th hold steady around 6ft to 6ft SW, periods in the 15-16 second range, winds staying cross-off and light. Not the absolute best of the run, but consistent and clean. Wednesday the 16th through Friday the 18th drops off a hair—5ft to 6ft, still long-period, still mostly light cross-off winds. Energy dips into the 1100s later on, but it’s all surfable.
The second week sees a bit of a drop early on. Saturday the 19th looks smaller with 4ft to 4ft SW swell, 14-second period, and energy slipping under 1000. Light winds though, so if you’re keen on a smaller wave, it’s there. Then Sunday the 20th picks back up—5ft SW in the morning, but the afternoon jumps to 7ft with 16 seconds and 2341 energy. Wind goes cross-shore, might bring a few ripples, but it’s worth a look.
Now for the real long-range standout: Monday the 21st morning. We’ve got a 7ft SW swell, 15-second period, 2117 energy, and light cross-off winds. Conditions rated excellent for experienced surfers—that’s the one to circle. The rest of that week stays in the 6ft to 7ft range, mostly SSW direction, with periods from 13 to 16 seconds. Winds stay light and cross-off, keeping it clean. Saturday the 26th finishes strong—morning sees 7ft SSW, 18 seconds, 2669 energy, but the afternoon is the real gem: 7ft SSW, 17 seconds, 2829 energy, and clean conditions. Big, long-period groundswell on a reef point—that’s expert territory and it’s gonna be special.
Overall, Periscope Point is firing through this run. The best of the best? Sunday the 13th morning and Monday the 21st morning, with Saturday the 26th afternoon as a close third. Get on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sat afternoon, min 23°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Wed afternoon, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 20 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||||
2093 | 1884 | 1547 | 1124 | 928 | 1350 | 1850 | 3123 | 2193 | 1787 | 1643 | 1456 | 1520 | 1730 | 1493 | 1343 | 1340 | 1576 | 1554 | 1512 | 1285 | |
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 | glassy | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 10:13AM2.89m | 10:40PM2.88m | 10:50AM2.94m | 11:08PM3.05m | 11:23AM2.91m | 11:35PM3.12m | 11:54AM2.80m | 00:01AM3.11m | 12:24PM2.64m | 00:27AM3.02m | 12:51PM2.43m | 00:52AM2.87m | 1:18PM2.20m | 1:17AM2.67m | |||||||
Low Tide | 4:30PM0.25m | 4:45AM0.34m | 4:58PM0.22m | 5:19AM0.19m | 5:26PM0.25m | 5:51AM0.14m | 5:51PM0.33m | 6:22AM0.18m | 6:16PM0.45m | 6:52AM0.30m | 6:39PM0.61m | 7:22AM0.48m | 7:01PM0.79m | ||||||||
6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:00 | — | — | 6:00 | — | — | 5:58 | — | — | |
— | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 29 | 25 | 29 | 30 | 26 | 29 | 30 | 25 | 28 | 29 | 25 | 28 | 29 | 25 | 29 | 30 | 25 | 28 | 29 | 25 |
Feels °C | 29 | 31 | 29 | 30 | 32 | 30 | 31 | 29 | 28 | 29 | 30 | 28 | 29 | 30 | 28 | 31 | 31 | 28 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 |
2093 | 1884 | 1547 | 1124 | 928 | 746 | 1850 | 3123 | 2193 | 1787 | 1643 | 1456 | 1520 | 1730 | 1493 | 1343 | 1340 | 1576 | 1554 | 1512 | 1285 | |
Swell 2 Height (m) Direction Period (s) | SSW 26 | E 5 | SW 24 | SW 21 | SW 21 | SW 20 | SW 14 | — | SE 6 | SSE 6 | E 5 | SSE 5 | SSE 5 | — | SSE 5 | SE 5 | SSW 21 | SW 19 | SSE 5 | — | SSE 5 |
66 | 11 | 197 | 548 | 548 | 1350 | 598 | — | 104 | 27 | 18 | 16 | 15 | — | 21 | 23 | 45 | 96 | 17 | — | 9 | |
Swell 3 Height (m) Direction Period (s) | SSW 26 | SW 24 | SW 24 | SE 6 | SSE 6 | SE 7 | SE 6 | — | E 5 | ENE 5 | SSE 5 | — | — | — | SW 24 | SSW 21 | — | SW 19 | ENE 5 | — | — |
66 | 91 | 197 | 31 | 12 | 63 | 25 | — | 25 | 8 | 14 | — | — | — | 22 | 45 | — | 96 | 8 | — | — | |
Wind waves Height (m) Direction Period (s) | ESE 5 | SSE 5 | SE 6 | — | SE 4 | — | — | SE 6 | — | E 5 | SE 5 | E 6 | SE 5 | — | — | — | SE 5 | ESE 6 | E 5 | SE 5 | SE 5 |
15 | 9 | 32 | — | 19 | — | — | 33 | — | 13 | 38 | 40 | 27 | — | — | — | 22 | 100 | 13 | 23 | 23 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 118 | 0 | 2 | 172 | 0 | 0 | 0 | 0 | 0 | 172 | 0 | 0 | 118 | 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










