
Surf Forecasts:
Periscope Point surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 5PM (local time) - 7.5ft (2.3m), 17s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 11AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,504 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 8PM (local time) - 6.5ft (2.0m), 14s 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 (Sep 05) at 8PM. The primary swell is predicted to be 2.0m and 14s period. 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 16s and forecast to arrive on Wednesday (Sep 09) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Thursday (Sep 10) at 11PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 5th Sep) | 6.5ft (2.0m) 14s |
| Best Surf | 5PM (Sun 6th Sep) | 7.5ft (2.3m) 17s |
| Most Powerful | 11AM (Wed 9th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Periscope Point over the next 16 days.
The Lowdown
Alright mates, Rusty here. Let’s break down what’s coming our way for the next couple of weeks. There’s a proper run of surf on the horizon, so let’s get into it.
The first day with anything rideable is Saturday, September 5th, but it’s a bit so-so. After that, things lock in. The real standout window starts Sunday, September 6th, with a mix of strong, long-period groundswells and clean, cross-off winds that are going to make for some unreal sessions.
We’re talking about Periscope Point, a sheltered reef that’s picky about when it works, but when it does, it’s a gem. It’s an advanced spot, and it’s inconsistent, so don’t expect it to fire every day. The water is sitting at about 80°F, which is pretty average for the time of year, nothing wild.
The magic hits on Sunday afternoon, September 6th. We’ve got a 8ft SSW groundswell with a 17-second period, pushing a ton of energy. The wind is light and cross-off from the SSE at just 6 mph, so the surface is going to be glassy clean. That’s your best session of the whole run – a true standout.
The swell stays solid through the week. Monday and Tuesday bring 7ft to 5ft SSW swell, still with those cross-off breezes and clean conditions. By Wednesday, September 9th, we’re back up to 8ft SSW swell with a 16-second period and light wind. That’s a beast – over 8ft, so this one is for the experienced crew only. The energy is strong, so you’ll feel the push.
Looking further out, Sunday, September 13th has a 6ft SW swell with a 19-second period – that’s a very long period groundswell. It’ll have heaps of energy, and at a reef, that long period should wrap in beautifully. The winds are light and cross-off, so it’s another excellent call, though a bit less certain this far out.
For the second week, the pattern holds. Swell sizes hang around 5ft to 8ft, mostly from the SW, with consistent cross-off winds. A few days in the middle of the week, like Wednesday, September 16th, push up to 8ft again, but the tide might be a factor, so check your window. The last few days, from Thursday, September 17th through the weekend of September 20th, are all excellent with clean conditions and light winds.
The only thing to keep in mind is that Periscope Point is inconsistent. It doesn’t fire all the time, but when it does, it’s quality. Expect crowds to be around, especially on the weekends, because this is going to be the spot.
So, bottom line: Sunday, September 6th afternoon is the big one. Clean, solid, and long-period. Wednesday, September 9th is for the hardcore. The rest of the run is very good to excellent. Don’t sleep on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat morning, min 23°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 28°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 14 | SSW 16 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 20 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 |
Wave Graph | |||||||||||||||||||||
1362 | 1677 | 1582 | 1080 | 2952 | 2550 | 1900 | 1724 | 1186 | 1093 | 1670 | 2204 | 3504 | 2864 | 2518 | 1785 | 2438 | 2379 | 2146 | 2093 | 1567 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | cross-off | cross | 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 | glassy |
High Tide | 2:59PM1.72m | 3:12AM2.42m | 5:27PM1.51m | 5:11AM2.23m | 8:28PM1.73m | 7:29AM2.32m | 9:10PM2.05m | 8:42AM2.54m | 9:42PM2.36m | 9:32AM2.75m | 10:11PM2.65m | 10:13AM2.89m | 10:40PM2.88m | ||||||||
Low Tide | 9:16AM0.83m | 8:17PM1.13m | 10:56AM1.02m | 9:15PM1.41m | 1:32PM0.95m | 00:58AM1.48m | 2:44PM0.71m | 2:37AM1.19m | 3:25PM0.50m | 3:28AM0.86m | 3:59PM0.34m | 4:09AM0.57m | 4:30PM0.25m | 4:45AM0.34m | |||||||
6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:02 | — | — | 6:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 2 | — | — | — | — | 1 | — |
Temp °C | 28 | 28 | 24 | 28 | 28 | 25 | 27 | 27 | 24 | 28 | 28 | 25 | 28 | 28 | 25 | 28 | 28 | 25 | 28 | 28 | 25 |
Feels °C | 28 | 29 | 27 | 30 | 29 | 28 | 28 | 28 | 26 | 29 | 28 | 28 | 30 | 29 | 28 | 30 | 29 | 28 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 16 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 |
1362 | 1677 | 1582 | 1080 | 2952 | 2550 | 1900 | 1724 | 1186 | 1093 | 1342 | 2204 | 3504 | 2864 | 2518 | 1785 | 2438 | 2379 | 2146 | 2093 | 1567 | |
Swell 2 Height (m) Direction Period (s) | SE 4 | ESE 4 | S 4 | SSW 17 | SSW 13 | — | SW 24 | SSW 22 | SW 21 | SSW 20 | SSW 18 | SSW 13 | — | — | — | SW 18 | — | SW 27 | SSE 5 | SW 24 | SW 24 |
16 | 6 | 9 | 608 | 546 | — | 22 | 46 | 437 | 1014 | 1670 | 996 | — | — | — | 319 | — | 28 | 15 | 91 | 197 | |
Swell 3 Height (m) Direction Period (s) | — | SSW 5 | — | S 4 | — | — | — | — | — | — | — | — | — | — | — | ESE 5 | — | SW 27 | SSW 26 | SW 24 | SW 24 |
— | 8 | — | 9 | — | — | — | — | — | — | — | — | — | — | — | 7 | — | 28 | 66 | 90 | 197 | |
Wind waves Height (m) Direction Period (s) | — | SSE 5 | SSE 4 | SSE 4 | S 7 | — | — | — | — | — | — | — | — | — | SSE 4 | — | SE 4 | SE 5 | E 5 | SE 5 | SE 5 |
— | 14 | 12 | 12 | 51 | — | — | — | — | — | — | — | — | — | 16 | — | 9 | 24 | 13 | 23 | 41 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 2 | 2 | 0 | 0 | 1 | 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










