
Surf Forecasts:
Impossibles surf forecast from 11 Sep 2026:
- Best quality surf: Friday 11 Sep, 5PM (local time) - 6ft (1.9m), 16s period, SSW swell with offshore winds.
- Most powerful swell: Sunday 13 Sep, 2PM (local time) - 7ft (2.1m), 17s period, SW swell with 2,683 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 5PM (local time) - 6ft (1.9m), 16s period with SSW swell.
Best Forecast Surf Conditions for Impossibles this week:
The surf forecast for Impossibles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 5PM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 0.4m and 24s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Impossibles in the next 16 days are 2.1m 17s and forecast to arrive on Sunday (Sep 13) at 2PM. 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 Monday (Sep 14) at 2AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Fri 11th Sep) | 6ft (1.9m) 16s |
| Best Surf | 5PM (Fri 11th Sep) | 6ft (1.9m) 16s |
| Most Powerful | 2PM (Sun 13th Sep) | 7ft (2.1m) 17s |
Table - best surf conditions forecast for Impossibles over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it. We’ve got a solid run of swell on the way, no gap to speak of—just straight into the action from Friday the 11th.
The standout is Impossibles, a heavy reef break. We’re looking at a long stretch of solid, consistent SW groundswell. The water’s sitting at a pretty average 79°F for this time of year, nothing strange there. This is definitely a spot for the experienced crew only—when it’s good, it’s world-class, but when it’s big, it’s no joke.
Friday morning the 11th kicks off with a clean 6 ft SW swell, period a fat 16 seconds, and a light ESE offshore breeze. The combined energy is a hefty 1865—that’s strong, powerful water moving through. This is proper groundswell, which at a reef like this will set up beautifully. Friday afternoon stays clean, with the swell shifting a touch more SSW at 6 ft.
Saturday the 12th eases a fraction to 5 ft SW in the morning, period dropping to 14 seconds, but still clean with that offshore wind. The energy is still solid at 1727. By the afternoon it’s 5 ft, still clean enough.
Sunday the 13th looks like the real high point of this first week. Morning brings 6 ft SW with a super-long 18-second period, and the energy reading is a massive 2512. That is serious, deep-ocean energy hitting the reef. The wind stays offshore. This will be hollow, fast, and only for the brave. The afternoon sees 7 ft SW at 17 seconds, energy up to 2635. That’s the biggest of the run so far.
Monday the 14th has a morning drop to 6 ft, but the wind is still offshore, and 16-second period keeps it lined up. The afternoon holds at 6 ft, clean and consistent.
Tuesday the 15th and Wednesday the 16th keep the same vibe—6 ft dropping to 6 ft, periods between 14 and 15 seconds, with consistent offshore or gentle cross-off breezes. Wednesday afternoon especially nice with a gentle 9 mph SE breeze.
Thursday the 17th has 6 ft SSW in the morning, clean, but the afternoon turns a bit cross-off with 6 ft. It’s still rideable but not as pristine.
Friday the 18th to Saturday the 19th sees a gentle drop-off. Morning on the 18th is 6 ft at 14 seconds with a light offshore, and by Saturday the 19th we’re down to 4 ft SSW. Still clean, but the energy is waning to around 878.
Then, Sunday the 20th fires back up. Morning brings 7 ft SW with 16 seconds, energy at 2666. This is another big, powerful session. The wind is clean offshore. The afternoon hits 7 ft SW, with a cross-off breeze but still very clean.
Monday the 21st continues the run with 7 ft SSW in the morning, gentle offshore, and the energy stays high at 1860.
From Tuesday the 22nd through Thursday the 24th, we’re looking at 6 ft to 7 ft SSW swells, periods between 13 and 16 seconds, with mostly cross-off or offshore winds. The energy stays in the moderate to strong range. Thursday the 24th morning and afternoon both show 7 ft with offshore wind—that’s a good call.
Friday the 25th sees the swell back off a bit to 6 ft in the morning, but the afternoon drops to 4 ft with a very long 19-second period. That will be fat and clean, but not much push.
Finally, Saturday the 26th closes the forecast in style. Morning has 7 ft SSW at 17 seconds, energy at 2712, and a crisp offshore ESE breeze. The afternoon bumps to 7 ft SSW, 17 seconds, energy hitting 2790. A cracking way to finish the run.
Overall, the best windows are Sunday the 13th and then Sunday the 20th and Saturday the 26th. Those are the ones with the biggest swell, longest periods, and cleanest winds. Impossibles is a reef, so expect those long-period groundswells to bend nicely around the break. Crowds are possible here, it’s a well-known spot.
If you’re not expert level, steer clear when it’s over 8 ft—and it gets there a few times. For the rest of us, this is a dream run of consistent, clean, powerful surf.
Rusty, signing off.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri night. Warm (max 26°C on Sat afternoon, min 25°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon morning. Warm (max 26°C on Mon afternoon, min 25°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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) | SW 16 | SSW 16 | SW 15 | SW 14 | SW 14 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph | |||||||||||||||||||||
1799 | 1677 | 1140 | 928 | 763 | 1944 | 2065 | 2561 | 1978 | 1494 | 1402 | 1331 | 1436 | 1455 | 1359 | 1358 | 1279 | 1488 | 1095 | 1388 | 1176 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | off |
High Tide | 10:02AM2.53m | 10:28PM2.52m | 10:38AM2.57m | 10:56PM2.67m | 11:12AM2.54m | 11:23PM2.75m | 11:43AM2.44m | 11:50PM2.75m | 12:12PM2.30m | 00:16AM2.68m | 12:40PM2.12m | 00:41AM2.55m | 1:06PM1.91m | 1:06AM2.37m | |||||||
Low Tide | 4:16PM0.21m | 4:32AM0.28m | 4:45PM0.18m | 5:06AM0.15m | 5:12PM0.21m | 5:39AM0.10m | 5:38PM0.27m | 6:11AM0.13m | 6:02PM0.37m | 6:41AM0.23m | 6:25PM0.50m | 7:11AM0.39m | 6:46PM0.65m | ||||||||
6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | |
— | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | 1 | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 25 | 27 | 27 | 27 | 25 | 27 | 25 | 25 | 26 | 27 | 25 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 16 | SW 15 | SW 14 | SW 14 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 |
1799 | 1677 | 1140 | 928 | 763 | 1944 | 2065 | 2561 | 1978 | 1494 | 1402 | 1331 | 1436 | 1455 | 1359 | 1358 | 1279 | 1488 | 1095 | 1388 | 1176 | |
Swell 2 Height (m) Direction Period (s) | SSW 26 | SW 24 | SSW 10 | SSW 21 | SW 21 | SW 14 | SW 14 | — | — | — | — | — | SSW 6 | — | S 5 | SSW 21 | — | S 6 | SSW 17 | SE 6 | — |
66 | 142 | 72 | 799 | 522 | 529 | 447 | — | — | — | — | — | 10 | — | 19 | 45 | — | 5 | 622 | 46 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 24 | — | NE 6 | — | — | — | — | — | — | — | — | — | — | W 16 | — | — | — | — | — |
— | — | 141 | — | 7 | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 5 | SE 5 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 5 | SE 6 | SE 5 | SE 5 | SE 6 | SE 6 | — | SE 6 |
17 | 13 | 20 | 30 | 44 | 51 | 43 | 74 | 77 | 58 | 76 | 69 | 44 | 36 | 31 | 49 | 42 | 40 | 44 | — | 29 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 38 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
Best forecast wave conditions in The Bukit - Bali | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Impossibles Surf forecast
The above surf forecast table for Impossibles provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Impossibles can be found by selecting the local surf guide option on the grey menu. Our Impossibles 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 (Impossibles) 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 Impossibles 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.
Impossibles is 12 km (7 miles) from the city of Kuta. If you plan a holiday in The Bukit - Bali, look for hotels and other accommodation in Kuta. Kuta has rooms for a wide range of budgets as well as car hire and transport links.










