Surf Forecasts:
Impossibles surf forecast from 30 Aug 2026:
- Best quality surf: Monday 31 Aug, 2PM (local time) - 4.5ft (1.4m), 18s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 8AM (local time) - 6.5ft (2.0m), 18s period, SSW swell with 2,519 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 5AM (local time) - 3.5ft (1.1m), 19s 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 Monday (Aug 31) at 5AM. The primary swell is predicted to be 1.1m and 19s period with a secondary swell of 1.1m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Impossibles in the next 16 days are 2.0m 18s and forecast to arrive on Tuesday (Sep 01) at 8AM. 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 Tuesday (Sep 01) at 5PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 31st Aug) | 3.5ft (1.1m) 19s |
| Best Surf | 2PM (Mon 31st Aug) | 4.5ft (1.4m) 18s |
| Most Powerful | 8AM (Tue 1st Sep) | 6.5ft (2.0m) 18s |
Table - best surf conditions forecast for Impossibles over the next 16 days.
The Lowdown
G’day, this is Rusty. Let’s have a look at what’s on the cards for the next couple of weeks.
Right now, the only real option on the table is Impossibles, a reef break that’s very consistent and fairly exposed to the swell. It’s an advanced spot, so you’ll need to be on your game. The water temperature is 79.7°, which is pretty much bang on average for this time of year, so no surprises there.
The surf kicks off Sunday afternoon, August 30, with a 3.9ft SSW swell. The wind is offshore from the ESE at 16 mph, keeping things clean, but the energy is moderate (924). It’s not huge, but it’s a solid start. Monday morning, August 31, sees a bump to 4.3ft SSW, with a very long period of 18 seconds, and the energy jumps to 1367. That’s proper groundswell, and with the ESE wind still offshore, it’ll be clean and powerful. Monday afternoon gets even better: 5.6ft SSW, 18-second period, and energy up to 1892. The wind stays offshore, so you’re looking at some excellent, punchy waves for the experienced crew.
Tuesday, September 1, the swell holds at 6.6ft SSW-SW, but the period drops slightly to 17-18 seconds. The wind is still offshore, but the energy is pumping – 2523 on Tuesday morning. This is getting into the “big” territory, over 6.6ft, so it’s for experts only. Tuesday afternoon is similar. Wednesday, September 2, the swell is 6.2ft to 5.9ft SW, with a 16-second period, energy still strong (1970-1750), and offshore winds. Excellent, consistent waves.
Thursday, September 3, things ease a touch to 5.2ft-4.6ft SW, period 15-16 seconds, energy dropping to 1180-903. It’s still very good, just a bit smaller. Friday, September 4, gets smaller again – 4.3ft-4.6ft SW, period 14 seconds, and the wind goes cross-offshore in the afternoon. It’s still clean, but the energy is dropping (662-735). Then Saturday, September 5, a new swell fills in: 5.6ft-6.2ft SSW, period 14-16 seconds, energy climbing back up to 1492-1803. The wind is cross-offshore, so it’s clean but not glassy. Sunday, September 6, the swell stays solid at 5.9ft-6.2ft SSW, with energy up to 2327-2304, but we’ve got rain showers in the morning and cross-offshore winds. Still clean, but the quality is a bit marginal.
Now, Monday, September 7, the wind swings back to offshore from the SE at 16 mph in the morning, and we’ve got 6.2ft SSW swell with a 14-second period, energy 1560. That’s a solid, clean day. Tuesday, September 8, is where it gets really interesting. The morning has 6.2ft SSW swell with a booming 19-second period, energy 3944, and offshore winds. That’s very long-period groundswell, and it’s going to be powerful and clean. Tuesday afternoon is even bigger: 7.2ft SSW, 18-second period, energy 4312, still offshore. This is a standout – the best of the whole run. The reef will handle that long period beautifully.
Wednesday, September 9, the swell peaks at 7.9ft-8.2ft SSW, 16-second period, energy 4771-5595. The wind is cross-offshore and lighter (9 mph), so it’s clean, but this is big – over 8.2ft, experts only. Thursday, September 10, stays solid at 8.2ft-7.9ft, with energy 3421-2957, still cross-offshore. Friday, September 11, the swell is 7.9ft-7.5ft SSW, energy 3133-2872, with offshore winds in the morning – another strong day. Saturday, September 12, the swell drops a bit to 6.9ft-6.2ft SW, period 15-16 seconds, energy 2174-1749, with offshore winds in the morning. It’s still very good.
Sunday, September 13, the swell eases to 4.9ft SW, period 14-15 seconds, energy 1421-1607, with offshore winds in the morning. Monday, September 14, the final day, sees a 6.2ft-5.9ft SSW swell, 16-second period, energy 1815-1691, with light cross-offshore winds. A clean, solid end to the run.
The absolute standout here is Tuesday, September 8, both morning and afternoon – that 19-second, 7.2ft SSW groundswell with offshore wind is a perfect storm for this reef. It’s going to be big, powerful, and clean. The crowds at Impossibles are “sometimes” an issue, so it could get busy on that day. The second best is probably Monday, September 7, with the 6.2ft and offshore winds, or the big Wednesday, September
Short Range ForecastMostly dry. Warm (max 26°C on Sun night, min 24°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed night, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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 19 | SSW 18 | SSW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 15 | SSW 14 | SSW 15 | SSW 14 |
Wave Graph | |||||||||||||||||||
766 | 1068 | 1682 | 1996 | 2316 | 2187 | 2091 | 1970 | 1750 | 1420 | 1068 | 809 | 676 | 648 | 721 | 411 | 1048 | 1735 | 1484 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off | cross-off | cross-off |
High Tide | 11:35PM2.59m | 11:44AM2.48m | 11:59PM2.66m | 12:14PM2.38m | 00:25AM2.69m | 12:45PM2.21m | 00:54AM2.65m | 1:18PM2.00m | 1:26AM2.54m | 1:55PM1.75m | 2:05AM2.38m | 2:45PM1.48m | 2:59AM2.17m | ||||||
Low Tide | 5:42AM0.27m | 5:47PM0.22m | 6:13AM0.22m | 6:11PM0.30m | 6:47AM0.23m | 6:36PM0.41m | 7:23AM0.32m | 7:02PM0.55m | 8:06AM0.48m | 7:29PM0.73m | 9:04AM0.69m | 7:59PM0.94m | |||||||
— | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | |
6:17 | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Temp °C | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 26 | 26 | 26 | 26 | 25 | 26 | 24 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 24 | 25 | 25 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 18 | SSW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 15 | SSW 14 | SSW 15 | SSW 14 |
397 | 1068 | 1682 | 1996 | 2316 | 2187 | 2091 | 1970 | 1750 | 1420 | 1068 | 809 | 676 | 648 | 721 | 411 | 1048 | 1735 | 1484 | |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SSW 12 | SSW 11 | SSW 10 | W 14 | — | SE 6 | — | — | SSW 6 | S 8 | — | SSW 18 | — | SSW 6 | SW 13 | SSW 6 | — | SSW 18 |
766 | 299 | 173 | 82 | 4 | — | 109 | — | — | 4 | 1 | — | 30 | — | 7 | 380 | 11 | — | 182 | |
Swell 3 Height (m) Direction Period (s) | SE 6 | NE 7 | SW 12 | — | — | — | — | — | — | — | — | — | — | — | — | S 6 | — | — | SSW 18 |
27 | 2 | 37 | — | — | — | — | — | — | — | — | — | — | — | — | 18 | — | — | 104 | |
Wind waves Height (m) Direction Period (s) | ESE 6 | SE 5 | SE 5 | SE 6 | SE 6 | SE 6 | — | SE 6 | SE 5 | SE 6 | SE 5 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 5 | SE 5 | SE 5 |
55 | 32 | 40 | 62 | 82 | 114 | — | 43 | 60 | 60 | 56 | 75 | 62 | 52 | 44 | 31 | 31 | 25 | 7 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 38 | 0 | 37 | 40 | 38 | 13 | 38 | 0 | 0 | 38 | 0 | 37 | 0 | 1 | 0 | 0 | 1 | 1 |
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.











