Surf Forecasts:
Impossibles surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 5PM (local time) - 10ft (3.0m), 16s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 19 Aug, 11PM (local time) - 10ft (3.0m), 17s period, SSW swell with 4,646 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 5PM (local time) - 10ft (3.0m), 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 Thursday (Aug 13) at 5PM. The primary swell is predicted to be 3.0m and 16s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Impossibles in the next 16 days are 3.0m 17s and forecast to arrive on Wednesday (Aug 19) 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 1.2m 6s period and expected on Wednesday (Aug 19) at 8AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Thu 13th Aug) | 10ft (3.0m) 16s |
| Best Surf | 5PM (Thu 13th Aug) | 10ft (3.0m) 16s |
| Most Powerful | 11PM (Wed 19th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Impossibles over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's get into it.
We’ve got a solid run of swell coming our way at Impossibles. This is a reef break, and it’s a heavy one – advanced only, and very consistent. The water temp is sitting at 78°, which is about average for this time of year, so no surprises there.
The action kicks off Thursday morning, August 13th. We’re looking at an 8ft SSW groundswell with a 17-second period, pushing a massive amount of energy (3965). That’s proper strong. The wind is a clean offshore ESE breeze at 16 mph. This is a serious setup, but the tide might be a bit tricky, so don’t expect perfection. It’s more of a warm-up for what’s to come. The afternoon picks up to 10ft, still from the SSW, period 16 seconds, and the energy is even bigger (4103). The wind stays offshore, and the conditions are looking excellent for the experienced crew. This is a big, powerful wave.
Friday morning, August 14th, the swell eases slightly to 7ft SSW, but the period is still a solid 16 seconds. The energy is still strong (2956) and the wind is offshore. This is a classic, clean morning. The afternoon sees the wind go cross-offshore, which takes a bit of the shine off, but it’s still rideable.
Saturday and Sunday, August 15th and 16th, we see a gentle breeze holding offshore in the mornings, with the swell holding steady around 7ft and a 17-second period. The energy remains in the very strong range (2929 and 2257). The afternoons get a bit of a cross-offshore wind, but the mornings are where it’s at.
Now, Monday the 17th, the swell drops a bit to 5ft, but the wind is still offshore, and the wave quality is still good. The energy is moderate (1085). It’s a fun, clean day.
The standout window is from Tuesday, August 18th, through to Saturday, August 22nd. This is the heart of the run. The swell stays solid, the wind is consistently offshore, and the energy is pumping. Thursday, August 20th, is the biggest day of the stretch, with the morning showing 10ft SSW swell, 16-second period, and an incredible 4071 in the combined energy. The wind is a clean 12 mph offshore. This is expert territory, and it’s going to be firing. The afternoon on the 20th is still excellent, with 8ft from the SW. Friday the 21st holds strong, but the afternoon sees a fresher 19 mph wind, which might make things a bit lumpy.
The energy starts to taper off a bit from Sunday, August 23rd, but the swell is still in the 5ft to 7ft range, and the wind remains offshore. The combined energy is still moderate to strong (1488 down to 1122). It’s still good, clean surf for the experienced.
The last week of the forecast, from Monday, August 24th, to Friday, August 28th, the swell size drops and the period shortens. The mornings are still clean with offshore winds, but the wave heights are mostly in the 4ft to 6ft range. The energy is moderate (down to 968 for a bit). The period on the 26th jumps back to 18 seconds, which is a very long period groundswell, but with only 4ft of swell, it might be a bit straight and tricky for a reef break. The wind is still good, but the power is definitely fading. The final Friday afternoon, the 28th, sees the wind go cross-offshore, and the conditions become marginal.
The standout: Without a doubt, Thursday, August 20th, morning. That 10ft SSW groundswell, with the 16-second period, clean offshore wind, and the massive energy reading (4071) is the pick of the whole 16 days. It’s dangerous, it’s powerful, and it’s for experts only. If you’re good enough, that’s the session.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 25°C on Thu morning, min 24°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sun morning, min 24°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 16 | SW 16 | SW 16 | SSW 18 | SSW 18 | SSW 17 |
Wave Graph | |||||||||||||||||||||
3965 | 4103 | 3341 | 2379 | 1877 | 1776 | 2929 | 2862 | 2329 | 2243 | 1690 | 1191 | 1061 | 763 | 651 | 1594 | 1611 | 1551 | 3535 | 4083 | 4539 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | off | off | cross-off | off | off | cross-off | off | off | off | off | off | off | off | off | off | off |
High Tide | 10:09AM2.64m | 10:56PM2.31m | 10:51AM2.69m | 11:28PM2.49m | 11:30AM2.66m | 11:59PM2.61m | 12:06PM2.54m | 00:29AM2.65m | 12:40PM2.37m | 00:58AM2.61m | 1:11PM2.15m | 1:26AM2.51m | 1:41PM1.92m | 1:55AM2.35m | |||||||
Low Tide | 4:42PM0.08m | 4:42AM0.47m | 5:15PM0.05m | 5:24AM0.33m | 5:45PM0.08m | 6:03AM0.27m | 6:14PM0.16m | 6:40AM0.29m | 6:41PM0.29m | 7:16AM0.37m | 7:06PM0.45m | 7:51AM0.51m | 7:29PM0.62m | ||||||||
6:30 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | |
— | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 24 | 25 | 24 | 24 | 25 | 26 | 26 | 26 | 27 | 27 | 26 | 28 | 27 | 26 | 27 | 25 | 26 | 26 | 25 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 16 | SW 16 | SW 16 | SSW 18 | SSW 18 | SSW 17 |
3965 | 4103 | 3341 | 2379 | 1877 | 1776 | 2929 | 2862 | 2329 | 2243 | 1690 | 1191 | 1061 | 763 | 472 | 1594 | 1611 | 1551 | 3535 | 4083 | 4539 | |
Swell 2 Height (m) Direction Period (s) | — | — | SSW 24 | SSW 21 | SSW 21 | SSW 19 | — | — | SSE 5 | SE 5 | — | SE 6 | SW 25 | SW 24 | SSW 18 | SSW 21 | SSW 20 | SSW 19 | SE 6 | — | SE 6 |
— | — | 54 | 260 | 333 | 788 | — | — | 15 | 14 | — | 15 | 24 | 88 | 651 | 584 | 961 | 1242 | 33 | — | 30 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 21 | — | SE 7 | — | — | — | — | — | S 26 | — | SSW 20 | SSW 24 | SE 5 | — | SE 6 | — | — | — |
— | — | — | 231 | — | 35 | — | — | — | — | — | 13 | — | 75 | 55 | 18 | — | 36 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | SE 5 | SSE 8 | SE 8 | — | SE 5 | SSE 5 | SE 5 | SE 5 | SE 5 | SE 6 | SE 5 | SE 6 | SE 6 | — | SE 6 | — | SE 6 | SE 6 | — |
— | — | 27 | 86 | 57 | — | 21 | 17 | 25 | 21 | 22 | 33 | 23 | 25 | 34 | — | 33 | — | 80 | 35 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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.











