
Surf Forecasts:
Impossibles surf forecast from 13 Sep 2026:
- Best quality surf: Sunday 13 Sep, 11PM (local time) - 6.5ft (2.0m), 16s period, SW swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 5PM (local time) - 7ft (2.1m), 16s period, SW swell with 2,080 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 11PM (local time) - 6.5ft (2.0m), 16s period with SW 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 Sunday (Sep 13) at 11PM. The primary swell is predicted to be 2.0m and 16s period with a secondary swell of 0.7m and 6s. 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 16s and forecast to arrive on Sunday (Sep 20) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Monday (Sep 14) at 2PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 13th Sep) | 6.5ft (2.0m) 16s |
| Best Surf | 11PM (Sun 13th Sep) | 6.5ft (2.0m) 16s |
| Most Powerful | 5PM (Sun 20th Sep) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Impossibles over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve got a solid run of south-west groundswell lining up at Impossibles, and it’s looking like a real treat for those who know what they’re doing. This is a reef break that’s very consistent, and it’s fairly exposed to the swell, so it’ll be working hard for the next couple of weeks. The water temp is running about average for this time of year, nothing wild there.
The first few days (Monday the 14th through Wednesday the 16th) are building towards something better. We’re looking at 5ft to 6ft of SW/SSW swell, with a long period of 14 to 16 seconds – that’s proper groundswell, plenty of energy (combined energy around 1314 to 1520). The wind is offshore from the ESE most of the time, which means clean faces, though the breeze is a bit fresh at 15 to 19 mph on Monday. It’s clean but a little bumpy on the bigger gusts. The surf is okay, but it’s not the standout for this run.
Thursday the 17th morning is where things start to get interesting. We’ve got 6ft of SSW swell at 14 seconds, moderate offshore breeze from the ESE at 12 mph, and the combined energy jumps to 1554. The report calls it excellent for experienced surfers, and I’d agree – the wind is clean and the swell has some punch.
Friday the 18th through Sunday the 20th keeps the consistency. The swell drops a touch to 4ft to 5ft but the period stays good at 13 to 14 seconds. Winds are lighter at 9 mph, still offshore from the SE/ESE, so the surf will be clean and manageable. The combined energy sits around 890 to 1018 – still moderate, but the quality is there.
Now, my pick of the whole run is Sunday the 20th. We’ve got an excellent setup: a 6ft to 7ft SW swell, rolling in at 16 seconds – that’s a long-period groundswell with serious push. The combined energy is at 2080, which is strong. The wind is gentle offshore from the SE at 9 mph, so the waves will be glassy and lined up. This is a proper session for an advanced surfer. The break can draw a crowd sometimes, but with that size and quality, it’s worth it.
The following week, from Monday the 21st to Sunday the 27th, the swell holds steady at 5ft to 7ft, still from the SSW/SW with periods of 13 to 16 seconds. The wind continues to play ball – mostly gentle offshore breezes in the mornings, with a few afternoons turning cross-off. The combined energy ranges from 1129 up to 2446, so there’s plenty of power. Mornings are your best bet for the cleanest conditions. Not a dud day in there.
The very last session, on Monday the 28th morning, is a monster. We’re looking at 8ft of SSW swell with an 18-second period – that’s an incredibly long, powerful groundswell. The combined energy is 4835, which is very strong. The wind is gentle offshore from the ESE, so it will be clean. This is for experts only; at over 8ft, it’s too big for almost everyone. If you’ve got the chops and the right board, that’s the one to circle on your calendar.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 25°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Warm (max 26°C on Wed night, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SW 17 |
Wave Graph | |||||||||||||||||||
1978 | 1494 | 1402 | 1331 | 1314 | 1251 | 1341 | 1158 | 1261 | 1801 | 1370 | 1227 | 1034 | 957 | 659 | 796 | 672 | 612 | 974 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | cross-off | off | off | cross-off | off | off | off | off | off | cross-off | off |
High Tide | 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 | 1:32PM1.70m | 1:33AM2.17m | 2:00PM1.49m | 2:03AM1.96m | ||||||
Low Tide | 5:39AM0.10m | 5:38PM0.27m | 6:11AM0.13m | 6:02PM0.37m | 6:41AM0.23m | 6:25PM0.50m | 7:11AM0.39m | 6:46PM0.65m | 7:43AM0.58m | 7:04PM0.82m | 8:22AM0.80m | 7:16PM1.00m | |||||||
— | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:15 | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 |
Feels °C | 26 | 25 | 26 | 24 | 25 | 26 | 27 | 25 | 27 | 27 | 26 | 28 | 27 | 28 | 27 | 28 | 28 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SW 17 |
1978 | 1494 | 1402 | 1331 | 1314 | 1251 | 1341 | 1158 | 1261 | 1801 | 1370 | 1227 | 1034 | 957 | 659 | 796 | 672 | 612 | 974 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | W 16 | SW 21 | SW 20 | — | SSW 18 | SSW 8 | S 8 | SW 22 | SW 16 | SW 20 | SSW 18 | SW 18 | SW 13 |
— | — | — | — | — | — | 5 | 18 | 61 | — | 184 | 63 | 45 | 18 | 203 | 99 | 218 | 396 | 394 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 16 | — | — | — | SE 6 | SE 6 | SW 22 | SSW 21 | SSW 20 | SE 5 | SE 5 | SE 6 |
— | — | — | — | — | — | — | 5 | — | — | — | 26 | 18 | 18 | 42 | 38 | 7 | 10 | 9 | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SE 5 | SE 5 | — | ESE 6 | SE 5 | SE 6 | ESE 6 | — | — | ESE 6 |
58 | 67 | 118 | 69 | 62 | 60 | 56 | 44 | 41 | 34 | 34 | — | 46 | 18 | 15 | 14 | — | — | 33 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 13 | 38 | 38 | 0 | 38 | 0 | 7 | 0 | 1 | 0 | 0 | 1 | 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.










