
Surf Forecasts:
Periscope Point surf forecast from 24 Jul 2026:
- Best quality surf: Saturday 25 Jul, 11PM (local time) - 6ft (1.8m), 9s period, SSE swell with offshore winds.
- Most powerful swell: Saturday 1 Aug, 2AM (local time) - 4.5ft (1.4m), 16s period, SSW swell with 993 kJ wave energy.
- Next surfable swell (1★+): Saturday 25 Jul, 8AM (local time) - 3.5ft (1.1m), 15s 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 Saturday (Jul 25) at 8AM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 1.0m and 7s. 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 1.4m 16s and forecast to arrive on Saturday (Aug 01) at 2AM. 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 6s period and expected on Friday (Jul 31) at 11AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 25th Jul) | 3.5ft (1.1m) 15s |
| Best Surf | 11PM (Sat 25th Jul) | 6ft (1.8m) 9s |
| Most Powerful | 2AM (Sat 1st Aug) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at the coming swell window. Let’s get straight into it.
This stretch is all about Periscope Point, a sheltered reef setup that loves a good south swell. We’ve got a slow start, but from late July right through the first half of August, there’s a proper run of waves building. The water’s sitting at 80°, which is pretty much normal for this time of year, so no need to stress about any weird temperature shifts.
The first real session worth paddling for is Saturday, July 25th. Clean, clear morning with a 4 ft SSW groundswell hitting a 15-second period. That’s plenty of grunt for a reef like this. Combined energy’s sitting at 670 (moderate) and the cross-off breeze is keeping it tidy. Afternoon looks a touch more questionable tide-wise, but the morning is a good warm-up.
Sunday, July 26th offers some waves, but that swell period drops to 8 seconds and the energy feels a bit weaker—marginal conditions that might work if you’re desperate for a paddle. Come Monday afternoon, things perk up again with 6 ft from the southeast, though the period is still short. Not classic, but there’s enough push.
The real standout kicks off around July 30th into the start of August. Thursday afternoon, July 30th, we see a nice 4 ft SSW groundswell with a 15-second period and combined energy hitting 1285 (moderate to strong). That’s a taste of what’s coming.
Friday, July 31st and Saturday, August 1st are absolutely the highlights of this first week. Friday morning: 4 ft SW groundswell at 18 seconds, energy at 1219, with a light cross-off breeze. Saturday follows with 5 ft SW, 16-second period, and combined energy up to 1791. The winds are light, the surf is clean, and Periscope Point will be turning those long-period lines into proper waves. This is the kind of weekend you don’t want to miss.
Sunday, August 2nd gets a little bigger—6 ft to 5 ft SSW groundswell, 16-second period, and energy now in the 2000s (strong). Offshore breeze on the Sunday afternoon session. This is excellent, but with 6 ft swell on a reef, it’s starting to push into more experienced territory. Crowds are *sometimes* a factor here, so keep your eyes open.
We roll into the second week with still plenty of wave energy. August 3rd through 6th stays solid: chest to head-high SSW swell with periods between 14 and 17 seconds and energy mostly in the 1100 to 1600 range. Winds stay favourable. Tuesday afternoon, August 4th, is a real standout—5 ft SW, 17-second period, and combined energy of 2467 (strong). The water’s clean, the lines are long.
The absolute biggest call of the entire outlook lands on August 8th: both morning and afternoon sessions have 10 ft SSW swell with a very long 17–18 second period. Combined energy is almost 5000 (very strong). This is expert territory and will be turning out massive, powerful waves on the reef. Not for the faint-hearted. Sunday, August 9th hangs in there with 8 ft SSW, still very solid, but the period drops slightly to 16 seconds.
For the second week, if you can handle size, the August 4th afternoon and August 8th windows are the clear standouts—just know that 10 ft on a reef is properly big. The earlier sessions around July 31st and August 1st are your best bet for a slightly more manageable but still thrilling swell.
That’s the picture from here. Keep your wits about you with the bigger days, and don’t sleep on that late July run.
Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Sat afternoon, min 23°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 15 | SSE 9 | SSW 14 | SSE 8 | SSE 8 | E 7 | SE 7 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 18 | SW 18 | SW 17 | SSW 16 |
Wave Graph | |||||||||||||||||||||
522 | 522 | 453 | 273 | 216 | 284 | 111 | 336 | 181 | 436 | 314 | 474 | 568 | 515 | 493 | 291 | 656 | 572 | 895 | 874 | 993 | |
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 | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 8:40PM1.63m | 7:38AM2.22m | 9:39PM1.79m | 8:43AM2.35m | 10:13PM1.96m | 9:30AM2.51m | 10:41PM2.13m | 10:09AM2.66m | 11:08PM2.29m | 10:43AM2.78m | 11:33PM2.44m | 11:14AM2.85m | 11:58PM2.57m | ||||||||
Low Tide | 2:06PM1.01m | 00:46AM1.47m | 3:10PM0.84m | 2:28AM1.39m | 3:50PM0.66m | 3:24AM1.24m | 4:23PM0.50m | 4:04AM1.08m | 4:51PM0.36m | 4:40AM0.93m | 5:18PM0.27m | 5:13AM0.81m | 5:44PM0.22m | ||||||||
6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 24 | 26 | 27 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 25 | 26 | 24 | 25 | 26 | 24 | 26 | 27 | 24 |
Feels °C | 27 | 27 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 26 | 26 | 27 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | S 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSW 15 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SW 18 | SW 17 | SSW 16 |
522 | 161 | 453 | 273 | 216 | 284 | 74 | 155 | 177 | 82 | 99 | 129 | 568 | 515 | 493 | 291 | 656 | 419 | 895 | 874 | 993 | |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SSW 15 | SSW 14 | SSW 14 | SW 13 | SW 13 | SE 8 | E 7 | SW 13 | SSW 16 | SSW 16 | SSW 15 | SW 24 | E 6 | SSE 7 | SSW 12 | SSW 19 | SSW 18 | SSW 13 | SSW 13 | SSW 22 |
117 | 522 | 312 | 232 | 183 | 180 | 93 | 94 | 138 | 436 | 314 | 474 | 22 | 66 | 102 | 169 | 480 | 572 | 269 | 219 | 308 | |
Swell 3 Height (m) Direction Period (s) | WSW 18 | WSW 17 | WSW 16 | SW 15 | SW 15 | SW 20 | SSW 13 | SSW 17 | SSW 16 | SW 12 | E 6 | S 26 | SW 24 | SW 23 | SW 21 | SSW 20 | S 6 | SSE 7 | SSW 24 | SSE 6 | SSE 6 |
31 | 30 | 25 | 58 | 54 | 15 | 90 | 202 | 181 | 37 | 36 | 13 | 22 | 21 | 116 | 256 | 31 | 66 | 55 | 36 | 15 | |
Wind waves Height (m) Direction Period (s) | E 5 | E 5 | E 6 | E 7 | E 7 | E 7 | E 7 | SE 7 | E 7 | E 6 | SE 7 | E 6 | ESE 7 | SSE 7 | E 6 | SE 6 | ESE 6 | E 6 | SE 6 | E 5 | E 5 |
13 | 25 | 116 | 198 | 203 | 171 | 111 | 336 | 86 | 47 | 208 | 79 | 205 | 64 | 76 | 128 | 118 | 40 | 89 | 19 | 28 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 0 | 2 | 2 | 2 | 2 | 0 | 2 | 2 | 0 | 0 | 2 | 2 | 1 | 2 | 172 | 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










