Periscope Point Surf Break

Lat Long: 8.78° S 118.37° E

Periscope Point Surf Forecast and Surf Report

Issued: 7 pm 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Periscope Point sea temperature is
27.4° C
0.9° 

Periscope Point surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Periscope Point surf forecast from 18 Jul 2026:

  • Best quality surf: Monday 20 Jul, 5PM (local time) - 6.5ft (2.0m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Monday 20 Jul, 5PM (local time) - 6.5ft (2.0m), 17s period, SSW swell with 2,269 kJ wave energy.
  • Next surfable swell (1★+): Sunday 19 Jul, 2AM (local time) - 4.5ft (1.4m), 14s 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 Sunday (Jul 19) at 2AM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 1.0m and 6s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Periscope Point in the next 16 days are 2.0m 17s and forecast to arrive on Monday (Jul 20) 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 1.4m 6s period and expected on Tuesday (Jul 21) at 2AM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 19th Jul)4.5ft (1.4m) 14s
Best Surf 5PM (Mon 20th Jul)6.5ft (2.0m) 17s
Most Powerful 5PM (Mon 20th Jul)6.5ft (2.0m) 17s

Table - best surf conditions forecast for Periscope Point over the next 16 days.


The Lowdown

Alright folks, Rusty here. We’ve got a solid run of south swell on the way for Periscope Point, but you’ve got to be patient and pick your windows. This is an advanced reef break that’s inconsistent and sheltered, so don’t expect a wall of waves every day – when it fires, it’s a gem, but you’ll need to read the tides carefully.

The first real standout arrives on Monday, 20th July. Monday afternoon sees a nice 7ft SSW groundswell pushing in with a long 17-second period, and the combined wave energy is pumping hard at 2332. Winds are a light SSE breeze, cross-off, meaning it'll be clean for the experienced crew. This is a proper session for advanced surfers only – that size at a reef is no joke. The water temp is about average for this time of year, nothing unusual.

Tuesday the 21st still has some size, with a 6ft SW swell in the morning (energy at 1453) and a 6ft SSW in the afternoon (1118), but there's rain showers around early. Winds stay cross-off and manageable, but the conditions are marginal with the tide. Not the top pick, but worth a look if you missed Monday.

There's a bit of a lull midweek, with smaller 3ft to 4ft swell from the 22nd through the 25th. The energy drops to around 500-700 range, and while it's clean with light winds, the waves are ordinary. I’d save your energy.

Things start to lift again at the end of the month. Thursday, 30th July, brings a long-period SSW swell – 3ft morning building to 4ft in the afternoon, but the period hits 20 seconds and the energy climbs to 1336. That’s some serious groundswell pulse, and with gentle cross-off winds, it’s a real sleeper for the reef. For the experienced, this could be a glassy, clean session with long lines.

Friday the 31st carries on the good run, with 4ft SW swell at 18 seconds and energies well over 1100. Same gentle cross-off breeze. These two days are the second standout window – smaller in size but the quality is there.

Now, looking into the first week of August, there’s a bigger pulse on the radar. Saturday the 1st of August sees a 7ft to 7ft SW groundswell with an 17-18 second period, and the combined energy jumps to 2941 – that’s strong. Problem is, winds pick up to a moderate ESE breeze, 16 mph in the morning. That’s cross-off, but the conditions are marginal with the tide and it’s getting big. This is expert territory only.

Sunday the 2nd of August is the real highlight of the long-range. The swell holds at 7ft to 7ft from the SW, period still a solid 15-16 seconds, and the energy is over 2000. By the afternoon, the wind drops to a gentle 9 mph SE breeze, making it as clean as it gets for a big swell at this reef. The guidance calls it excellent conditions for experienced surfers – and I agree. It’s a promising one, but it’s over a week away, so keep an eye on it.

Monday the 3rd of August still has good size at 6ft SW, but the period shortens to 14 seconds, and it’s looking more marginal. Still worth a paddle if the swell sticks.

Overall: Monday 20th July afternoon is the first proper standout, and Sunday 2nd August afternoon is the long-range gem. In between, the 30th and 31st of July offer quality, smaller waves for the patient. Crowds are only sometimes an issue here, but an inconsistent reef like this can get a little busy when it’s good.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Mon night. Warm (max 28°C on Sun afternoon, min 23°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Tue night. Warm (max 27°C on Fri afternoon, min 23°C on Tue night). Wind will be generally light.

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
1
3
2
4
4
2
2
1
1
1
2
1
1
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
14
1.3
SW
14
1.3
SW
13
1.3
SW
13
1.6
SW
15
2
SSW
17
2
SSW
16
1.8
SW
15
1.7
SSW
14
1.5
SSW
14
1.3
SSW
13
1.2
SSW
13
1.2
SSW
13
1.2
SSW
14
1
SSW
14
1
SSW
14
1
SSW
13
0.9
SSW
13
0.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
810
656
569
560
1088
2269
1956
1377
1111
908
590
451
465
553
419
431
362
295
291
Wind (km/h)
10
E
20
ESE
15
SE
15
ESE
15
SE
15
SSE
10
SE
15
SE
15
SSE
15
SE
20
SSE
20
SSE
10
SE
15
SE
15
SSE
20
SE
20
SE
15
SSE
20
ESE
Wind State
off
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
cross-off
High Tide
1:16AM2.77m
1:16PM2.72m
1:52AM2.76m
1:56PM2.46m
2:28AM2.68m
2:36PM2.18m
3:06AM2.56m
3:22PM1.91m
3:48AM2.41m
4:27PM1.68m
4:46AM2.27m
6:29PM1.56m
Low Tide
7:16AM0.59m
7:32PM0.36m
8:00AM0.68m
8:03PM0.56m
8:45AM0.80m
8:33PM0.78m
9:36AM0.94m
9:04PM1.00m
10:39AM1.06m
9:39PM1.20m
12:16PM1.11m
10:37PM1.38m
part cloud
part cloud
clear
rain showers
part cloud
part cloud
rain showers
rain showers
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:22
6:22
6:22
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:01
6:02
6:02
6:02
6:02
6:02
 mm
1
3
2
1
Temp °C
24
26
28
24
26
27
24
25
26
24
26
26
24
26
26
24
26
27
24
Feels °C
26
26
28
25
26
28
26
25
25
25
25
24
24
25
24
25
25
26
25
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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