
Surf Forecasts:
Periscope Point surf forecast from 14 Sep 2026:
- Best quality surf: Sunday 20 Sep, 5PM (local time) - 7ft (2.1m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 2AM (local time) - 7ft (2.1m), 16s period, SW swell with 2,242 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 8PM (local time) - 6ft (1.8m), 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 Monday (Sep 14) at 8PM. The primary swell is predicted to be 1.8m and 16s period with a secondary swell of 0.3m 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 2.1m 16s and forecast to arrive on Monday (Sep 21) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Thursday (Sep 17) at 2AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 14th Sep) | 6ft (1.8m) 16s |
| Best Surf | 5PM (Sun 20th Sep) | 7ft (2.1m) 16s |
| Most Powerful | 2AM (Mon 21st Sep) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
Alright, Rusty here. Let's get into it.
Overall, we’ve got a solid run of south-west groundswell lined up for Periscope Point. It’s a sheltered reef that needs a proper S to SW direction to light up, and the forecast is serving that up nicely. The water’s sitting at 80°, pretty normal for this time of year, so no wetsuit worries.
We kick off Monday afternoon with a clean 6ft SW swell, period a long 16 seconds. Combined energy is 1528 (moderate), light cross-off wind from the SE, and it’s looking clean. This is proper point and reef stuff – that long period will wrap in nicely here, with longer lulls between sets making the paddle out a bit easier.
It stays consistent through Tuesday and Wednesday, but I’m looking at Thursday the 17th as a standout. Morning shows 6ft SW swell with a 6 mph SE breeze, energy at 1557 (moderate), and it’s clean. The swell ticks up to 7ft on the afternoon, still cross-off, energy climbing to 1667. That’s a solid run of quality.
Friday the 18th holds clean at 6ft in the morning, energy 1063, then drops a touch. Saturday the 19th eases off a bit, 4ft, still clean with light winds, but worth a paddle if you’re keen on a quieter session – Periscope Point can be inconsistent, and it’s a spot that sometimes gets a few out.
Sunday the 20th is the real highlight of the whole run. The morning has 6ft SW swell, a long 17 second period, energy at 1792 (moderate). The afternoon jumps to 7ft SW, 16 seconds, and combined energy hits 2160 – that’s strong. Light SSE breeze, clean as a whistle. For experienced surfers only at over 5ft, and with the swell over 7ft, keep it for the advanced crew. This is the best on offer.
We see a dip Tuesday the 22nd with smaller 4ft swell, but it rallies Wednesday the 23rd back up to 6ft and 6ft, both with light winds. The pattern holds into the weekend.
Then, Saturday the 26th is a proper standout in the second week. Morning shows 8ft SSW swell, 16 seconds, combined energy at 3304 – that’s strong to very strong. Light breeze again. That’s a serious day for experts only. Sunday the 27th holds at 6ft SSW, and Monday the 28th is another cracker: 8ft SSW, 17 second period Monday morning, energy at 3030 (strong), light SE wind. Clean and powerful.
For the whole 16-day window, there are no gaps with no recommendations – there’s surf on offer the whole way. If you can only pick one session, pin Sunday the 20th afternoon or Saturday the 26th morning. Both are clean, powerful, and long-period groundswell aimed right at the optimum S to SW direction.
Stay safe out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Mon afternoon, min 23°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Thu afternoon, min 23°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 14 | SW 15 | SW 14 | SSW 14 | SW 14 | SSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 |
Wave Graph | ||||||||||||||||||||
1513 | 1456 | 1520 | 1561 | 1493 | 1254 | 1220 | 1576 | 1554 | 1667 | 1303 | 1034 | 920 | 661 | 614 | 597 | 564 | 1774 | 2160 | 2242 | |
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 | off | cross-off | cross-off | off | cross-off | cross-off | glassy | cross-off | cross-off | off | cross-off | cross-off | glassy |
High Tide | 00:01AM3.11m | 12:24PM2.64m | 00:27AM3.02m | 12:51PM2.43m | 00:52AM2.87m | 1:18PM2.20m | 1:17AM2.67m | 1:43PM1.96m | 1:42AM2.44m | 2:11PM1.71m | 2:11AM2.21m | 3:08PM1.48m | 3:04AM1.97m | |||||||
Low Tide | 5:51PM0.33m | 6:22AM0.18m | 6:16PM0.45m | 6:52AM0.30m | 6:39PM0.61m | 7:22AM0.48m | 7:01PM0.79m | 7:54AM0.70m | 7:20PM0.98m | 8:33AM0.94m | 7:34PM1.19m | 9:37AM1.18m | 7:16PM1.40m | |||||||
— | — | 6:00 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | |
6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 25 | 28 | 28 | 24 | 28 | 29 | 25 | 29 | 30 | 25 | 29 | 29 | 25 | 29 | 28 | 25 | 29 | 29 | 25 |
Feels °C | 31 | 28 | 29 | 28 | 28 | 30 | 29 | 29 | 31 | 31 | 29 | 31 | 31 | 29 | 31 | 29 | 28 | 31 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 14 | SW 15 | SW 14 | SSW 14 | SW 14 | SSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 |
1513 | 1456 | 1520 | 1561 | 1493 | 1254 | 1220 | 1576 | 1554 | 1667 | 1303 | 1034 | 920 | 661 | 614 | 597 | 564 | 1774 | 2160 | 2242 | |
Swell 2 Height (m) Direction Period (s) | SSE 5 | SSE 6 | SSE 5 | — | SE 5 | SSE 5 | SW 21 | SSE 6 | SSE 6 | — | — | SSE 5 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SE 5 | — | — |
15 | 12 | 15 | — | 28 | 21 | 18 | 41 | 3 | — | — | 11 | 18 | 61 | 126 | 269 | 452 | 18 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | E 5 | E 5 | — | SW 24 | SSW 22 | — | — | E 5 | — | — | SW 22 | SW 21 | ESE 6 | — | SE 6 | SE 6 | — | — | — |
— | 14 | 8 | — | 22 | 45 | — | — | 12 | — | — | 18 | 18 | 4 | — | 19 | 13 | — | — | — | |
Wind waves Height (m) Direction Period (s) | ESE 5 | SE 6 | — | SSE 5 | E 5 | E 5 | SE 5 | SE 6 | SE 5 | SE 5 | ESE 6 | E 5 | ESE 4 | ESE 4 | ESE 5 | SE 3 | — | — | SE 6 | — |
47 | 47 | — | 27 | 2 | 7 | 22 | 72 | 29 | 10 | 47 | 18 | 13 | 4 | 10 | 5 | — | — | 15 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 178 | 172 | 0 | 0 | 179 | 0 | 0 | 172 | 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










