Surf Forecasts:
Periscope Point surf forecast from 24 Aug 2026:
- Best quality surf: Thursday 27 Aug, 11PM (local time) - 4.5ft (1.4m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 8AM (local time) - 8ft (2.5m), 18s period, SW swell with 4,257 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 5PM (local time) - 6ft (1.9m), 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 Monday (Aug 24) at 5PM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 0.3m and 20s. 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 2.5m 18s and forecast to arrive on Friday (Aug 28) at 8AM. 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 Monday (Aug 24) at 11PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 24th Aug) | 6ft (1.9m) 16s |
| Best Surf | 11PM (Thu 27th Aug) | 4.5ft (1.4m) 19s |
| Most Powerful | 8AM (Fri 28th Aug) | 8ft (2.5m) 18s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming down the line for Periscope Point. It’s a sheltered reef setup that only works on a south swell, and it’s inconsistent, so when it turns on, you’ve got to be on it. This is not a spot for the faint-hearted either – it’s strictly for the advanced crew.
The good news is, we’ve got a solid run of surf heading our way, but Monday the 24th of August is a bit of a write-off. The swell is a decent 7ft from the SSW with a long 15-second period, and the combined energy is a meaty 2089 (moderate wave energy), but the wind is a cross-off and the call is “marginal.” It’s not totally dead, but it’s not the day to call in sick.
Things start to look up on Wednesday the 26th of August. The swell drops a touch to 6ft, still from the SSW, with a 14-second period, and the wind is light and cross-off – that’s clean. The energy is sitting at 1132 (moderate wave energy). It’s a solid, surfable day, but not the standout.
The real standout of this whole 16-day window is Friday the 28th of August. That’s the one you circle on the calendar. We’re looking at 8ft of SW groundswell with a 17-second period, and the combined energy jumps to 4161 (strong wave energy). That’s a lot of water moving. The wind stays light and cross-off, keeping it clean. This is big, powerful, and excellent for experienced surfers. Expect long, lined-up waves, but at over 8ft, this is experts-only territory. The following Saturday the 29th of August is still very good, with 7ft of SW swell and clean conditions, but it’s not the peak that Friday is.
Looking further ahead, the first week of September keeps the swell running. Tuesday the 1st of September is a beauty, with 7ft of SW swell and glassy conditions in the afternoon. That’s a rare treat. The combined energy is 2605 (strong wave energy). The 2nd and 3rd of September are still solid, with clean 7ft and 6ft SW swell respectively.
Things taper off a bit going into the second week, but there are still some fun ones. Monday the 7th of September has 6ft of SSW swell with clean conditions.
The water temperature is sitting at 79°, which is within the normal range for this time of year with a minor anomaly of -0.4°, so nothing unusual there.
The bottom line: Friday the 28th of August is the big one. Big swell, long period, clean. Be ready for it. If you miss that, Tuesday the 1st of September with that glassy afternoon session is a close second.
Stay safe out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Tue afternoon, min 22°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Thu morning, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 15 | SSW 16 | SW 15 | SSW 14 | SW 16 | SSW 15 | SSW 14 | SSW 14 | SW 13 | SW 16 | SW 21 | SW 19 | SW 17 | SW 16 | SSW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2069 | 1699 | 1434 | 763 | 1449 | 1158 | 1126 | 1080 | 854 | 483 | 634 | 1825 | 4161 | 3648 | 2821 | 1860 | 1446 | 1094 | 651 | 711 | 546 |
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 | off | cross-off | cross-off | glassy | cross-off | cross-off | glassy | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 9:45PM1.82m | 8:37AM2.25m | 10:01PM2.03m | 9:21AM2.46m | 10:20PM2.25m | 9:55AM2.64m | 10:40PM2.46m | 10:26AM2.78m | 11:01PM2.66m | 10:56AM2.87m | 11:23PM2.83m | 11:25AM2.89m | 11:46PM2.95m | ||||||||
Low Tide | 3:08PM0.93m | 2:37AM1.45m | 3:38PM0.72m | 3:22AM1.23m | 4:03PM0.54m | 3:55AM1.00m | 4:26PM0.39m | 4:25AM0.79m | 4:49PM0.29m | 4:55AM0.59m | 5:13PM0.24m | 5:24AM0.43m | 5:36PM0.23m | ||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 24 | 26 | 28 | 24 | 27 | 28 | 24 | 28 | 28 | 23 | 27 | 28 | 24 | 28 | 28 | 24 | 28 | 29 | 24 |
Feels °C | 26 | 27 | 26 | 26 | 27 | 26 | 28 | 29 | 27 | 30 | 28 | 25 | 27 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 16 | SW 15 | SSW 14 | SW 16 | SSW 15 | SSW 14 | SSW 14 | SW 13 | SW 12 | SSW 12 | SW 19 | SW 17 | SW 16 | SSW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 |
| kJ | 2069 | 1699 | 1434 | 763 | 1449 | 1158 | 1126 | 1080 | 854 | 341 | 458 | 1825 | 4161 | 3648 | 2821 | 1860 | 1446 | 1094 | 651 | 711 | 486 |
Swell 2 Height (m) Direction Period (s) | SE 5 | SW 20 | SE 5 | SW 17 | SSE 5 | — | SE 5 | ESE 5 | SW 24 | SW 16 | SW 15 | SW 15 | — | — | SE 5 | SSE 5 | S 26 | SSE 5 | SSE 5 | SW 21 | SW 19 |
| kJ | 20 | 60 | 28 | 354 | 13 | — | 6 | 17 | 22 | 483 | 459 | 940 | — | — | 41 | 17 | 13 | 24 | 10 | 224 | 546 |
Swell 3 Height (m) Direction Period (s) | — | — | E 6 | — | E 5 | — | — | — | SSW 16 | S 6 | SW 21 | S 6 | — | — | — | — | S 26 | SSW 24 | SW 23 | — | SSE 5 |
| kJ | — | — | 16 | — | 14 | — | — | — | 104 | 15 | 634 | 16 | — | — | — | — | 13 | 54 | 134 | — | 27 |
Wind waves Height (m) Direction Period (s) | — | SE 5 | E 6 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | — | ESE 4 | E 5 | SE 5 | — | — | — | — | E 5 | SE 5 | E 6 | E 5 | E 5 | — |
| kJ | — | 14 | 22 | 47 | 34 | 42 | 48 | — | 5 | 2 | 8 | — | — | — | — | 13 | 29 | 6 | 27 | 12 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 0 | 2 | 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
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