
Surf Forecasts:
Periscope Point surf forecast from 12 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 8AM (local time) - 5.5ft (1.7m), 19s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 14 Jul, 11PM (local time) - 7ft (2.1m), 18s period, SSW swell with 2,961 kJ wave energy.
- Next surfable swell (1★+): Sunday 12 Jul, 11PM (local time) - 2.5ft (0.7m), 12s 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 12) at 11PM. The primary swell is predicted to be 0.7m and 12s period with a secondary swell of 0.6m and 13s. 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 18s and forecast to arrive on Tuesday (Jul 14) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Wednesday (Jul 15) at 5AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 12th Jul) | 2.5ft (0.7m) 12s |
| Best Surf | 8AM (Tue 14th Jul) | 5.5ft (1.7m) 19s |
| Most Powerful | 11PM (Tue 14th Jul) | 7ft (2.1m) 18s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
Alright, Rusty here, let’s talk about what’s on the menu for Periscope Point over the next couple weeks.
First up, we’ve got a reef setup that’s sheltered and likes south in the swell window, so it needs the right angle to really fire. Right now, the water’s sitting around 81°, which is a touch warmer than usual for this time of year—nothing crazy, just a little noticeable.
It’s a bit of a slow start. We’ll see some semi-clean cross-off swell filtering in on Sunday afternoon, 12 July, but it’s inconsistent and only pushing around 3ft from the SW with a 13-second period—not worth rushing out for. The combined energy is only 483.
Monday 13 July drops off even more—3ft and 2ft—and the wind picks up a bit, so I’d say skip it.
The first real standout arrives Tuesday 14 July. The swell builds to 6ft–6ft on Tuesday morning and afternoon from the SSW, period stretching out to 18 seconds. That’s proper groundswell, and for a point like this, long-period south swells wrap in beautifully. Wednesday 15 July holds 6ft–7ft, also SSW, with decent 16–17 second periods and clean surfaces from that SE cross-off breeze. These days are the pick of the first week—the energy climbs into the 1800s–2200s, and while the ratings are modest, the conditions are clean and the waves have shape.
Thursday 16 to Saturday 18 July settle back a bit—4ft–5ft, still SW/SWW, still clean enough, but smaller and less punchy.
Now here’s the big one for the second week: Monday 20 July afternoon, we’ve got a 8ft SSW swell with a 17-second period and light cross-off wind. The combined energy hits 3024—that’s strong, serious water moving. This is for experienced surfers only. If you know your way around a reef and can handle that size and power, this is the session to aim for. It’s a long way out, so keep an eye on it, but the signs look good.
That heavy SSW swell continues into Tuesday 21 July morning at 7ft, but by afternoon it gets a bit cross-choppy.
Another excellent window opens up Saturday 25 July and Sunday 26 July. Saturday delivers 6ft–6ft SSW groundswell with periods of 18–19 seconds, clean cross-off wind, and energy readings in the 2500s. Sunday morning holds 7ft from the SSW, still clean, still solid. After that, it fades through the final days.
Crowds can show up here sometimes, so if you’re heading out on those standout days, expect company.
All in all, the two true standouts are Tuesday 14 July / Wednesday 15 July for the first week, and the Monday 20 July afternoon session for the second. The 25–26 July weekend also looks like a cracker.
So grab a board you trust and pick your window. This reef has some real grunt coming.
- Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 23°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Wed afternoon, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SW 13 | SW 12 | SW 13 | SSW 20 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 |
Wave Graph | |||||||||||||||||||||
335 | 147 | 239 | 280 | 1226 | 1836 | 2024 | 2517 | 2153 | 1787 | 1479 | 1059 | 1045 | 953 | 667 | 1115 | 653 | 1006 | 940 | 799 | 637 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | 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 | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:03PM1.89m | 8:29AM2.78m | 9:58PM2.08m | 9:29AM2.95m | 10:43PM2.28m | 10:22AM3.07m | 11:24PM2.46m | 11:09AM3.12m | 00:02AM2.61m | 11:54AM3.07m | 00:40AM2.72m | 12:36PM2.93m | 1:16AM2.77m | 1:16PM2.72m | |||||||
Low Tide | 2:03AM1.20m | 3:39PM0.32m | 3:13AM1.05m | 4:27PM0.15m | 4:10AM0.87m | 5:09PM0.04m | 5:00AM0.71m | 5:48PM0.02m | 5:47AM0.61m | 6:25PM0.07m | 6:32AM0.57m | 6:59PM0.19m | 7:16AM0.59m | ||||||||
— | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | |
6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | 6:01 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 24 | 28 | 28 | 24 | 27 | 28 | 24 | 27 | 28 | 25 | 27 | 28 | 25 | 27 | 27 | 25 | 25 | 27 | 24 | 26 |
Feels °C | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 28 | 29 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 26 | 28 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 12 | SW 13 | SW 14 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 |
335 | 147 | 239 | 238 | 1226 | 1836 | 2024 | 2517 | 2153 | 1787 | 1479 | 1059 | 1045 | 953 | 667 | 1115 | 653 | 1006 | 940 | 799 | 637 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SW 13 | SW 23 | SSW 20 | S 6 | SW 11 | SSW 21 | SE 6 | SE 6 | SE 7 | SE 7 | SSE 7 | SSE 7 | SE 7 | SSE 6 | E 6 | SSE 6 | SSE 6 | E 6 | SSE 6 | SSE 6 |
57 | 136 | 137 | 280 | 16 | 55 | 260 | 34 | 39 | 44 | 109 | 56 | 38 | 100 | 59 | 31 | 60 | 40 | 30 | 65 | 52 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | S 6 | SSW 12 | SSW 12 | — | SW 10 | SSE 6 | — | E 5 | ENE 5 | E 6 | E 6 | E 6 | SW 20 | SW 18 | S 6 | SW 13 | E 5 | S 6 | S 26 | SW 22 |
37 | 17 | 14 | 93 | — | 54 | 11 | — | 21 | 8 | 26 | 23 | 32 | 97 | 319 | 26 | 286 | 20 | 17 | 13 | 123 | |
Wind waves Height (m) Direction Period (s) | SE 6 | E 4 | SE 6 | SE 6 | ESE 6 | ESE 5 | SE 5 | ESE 6 | ESE 6 | SE 5 | E 6 | E 6 | — | E 6 | E 6 | SE 6 | E 6 | E 6 | SE 6 | E 6 | E 6 |
54 | 5 | 59 | 52 | 63 | 58 | 39 | 58 | 55 | 35 | 71 | 32 | — | 91 | 32 | 69 | 113 | 30 | 56 | 50 | 43 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 2 | 172 | 0 | 2 | 172 | 0 | 2 | 0 | 0 | 2 | 172 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 2 |
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











