Surf Forecasts:
Impossibles surf forecast from 16 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 5PM (local time) - 8ft (2.5m), 17s period, SSW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 2AM (local time) - 10ft (3.0m), 17s period, SW swell with 4,448 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 2AM (local time) - 5.5ft (1.7m), 14s 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 Monday (Aug 17) at 2AM. The primary swell is predicted to be 1.7m and 14s period with a secondary swell of 0.6m and 5s. 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 Thursday (Aug 20) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Wednesday (Aug 19) at 8AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 17th Aug) | 5.5ft (1.7m) 14s |
| Best Surf | 5PM (Wed 19th Aug) | 8ft (2.5m) 17s |
| Most Powerful | 2AM (Thu 20th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Impossibles over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at a solid run ahead for the Impossibles (reef). This is an advanced, very consistent reef break that’s fairly exposed to the swell, with an optimum direction from the southwest. The water temp is sitting at 78°F, which is just about normal for this time of year – nothing wild there, just your usual warm bath.
Right off the bat, this is a heck of a forecast. We’ve got a long stretch of excellent conditions coming up, starting Sunday afternoon, August 16th. The swell is going to be rolling in from the SSW, with a solid 6ft, a super long period of 15 seconds, and a strong wave energy of (1599). The wind is offshore from the ESE at 12 mph, which is going to keep the surface glassy and clean. This is world-class reef stuff, but with that size and power, it’s strictly for the experienced crew.
The pattern holds strong through the week. Monday morning, August 17th, drops a little to 5ft, but still with a nice 14-second period and that same clean offshore wind. The energy eases a bit to (911), but it’s still very good. Monday afternoon stays clean with a gentle offshore breeze.
Then things really start to ramp up. Tuesday, August 18th, morning sees the swell bumping to 6ft with a 16-second period and a big jump in energy to (2883). Tuesday afternoon is even better, shifting to a SW direction at 6ft and 16 seconds. By Wednesday, August 19th, we’re looking at the standout of the whole run. Wednesday afternoon is the pick of the entire forecast: 8ft of SSW groundswell, a 17-second period, and a massive energy reading of (4093). The wind is offshore and clean. This is going to be a serious, heavy, powerful reef wave. It’s too big for beginners, and honestly, it’s only for experts who know what they’re doing. The energy is immense.
Thursday, August 20th, holds strong with 8ft SW swell in the morning and 8ft in the afternoon. The conditions stay excellent. The wave energy is still in the strong range, (3697) and (3091) respectively.
Now, Friday, August 21st, is a bit of a mixed bag. The morning drops to 5ft, and while the period is a long 18 seconds, the notes say the tide conditions might be questionable. The afternoon rebounds to 8ft, so there’s still plenty of size, but the tide might be a factor. The wind stays clean offshore.
Saturday, August 22nd, morning looks excellent again with 7ft SSW swell and a 16-second period, energy at (2463). The afternoon shifts to a cross-offshore wind, which is still clean, but the tide might make it a bit tricky.
We roll into the second week, and it’s still pumping. Sunday, August 23rd, through Monday, August 24th, keeps delivering excellent surf with 6ft to 7ft SSW swell, long periods, and clean offshore winds. The energy stays strong. Tuesday, August 25th, winds down a little to 6ft, but still very good.
Wednesday, August 26th, is a day for a rest. The swell drops to 4ft, and while the wind is offshore, the energy is low at (644). The afternoon sees a cross-offshore wind and a marginal tide call. It’s a bit of a lull.
But don’t worry, it picks right back up. Thursday, August 27th, morning has a 4ft swell but with a very long 17-second period, and the energy is back up to (1003). The afternoon is excellent again with 5ft and a 16-second period. Friday, August 28th, and Saturday, August 29th, are both looking excellent, with solid 7ft and 6ft SSW swells, clean conditions, and plenty of energy.
The final weekend, August 30th and 31st, keeps the fire burning. Sunday morning looks excellent with 6ft SW swell, but the afternoon gets a cross-offshore wind. Monday, August 31st, closes out the forecast with a bang: 7ft to 8ft SW swell, 16-second period, and strong to very strong energy readings of (2930) and (3317). The wind is offshore and clean.
The absolute standout is Wednesday afternoon, August 19th. That 8ft SSW groundswell with a 17-second period and massive energy (4093) is going to be a session to remember for the experts. The consistency here is unreal, and the offshore winds are a dream. Just remember, this is a reef break, and with that size and power, it’s not a place to learn.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Wed afternoon, min 25°C on Wed afternoon). Wind will be generally light. | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 16 | SW 16 | SW 16 | SSW 18 | SSW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph | ||||||||||||||||||||
1599 | 1191 | 886 | 763 | 651 | 1594 | 1611 | 1551 | 3575 | 4037 | 4448 | 3648 | 2992 | 2383 | 1288 | 3433 | 3010 | 2389 | 2151 | 1671 | |
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 | cross-off | off |
High Tide | 00:29AM2.65m | 12:40PM2.37m | 00:58AM2.61m | 1:11PM2.15m | 1:26AM2.51m | 1:41PM1.92m | 1:55AM2.35m | 2:11PM1.68m | 2:25AM2.17m | 2:45PM1.45m | 3:04AM1.98m | 3:57PM1.24m | 4:20AM1.81m | |||||||
Low Tide | 6:14PM0.16m | 6:40AM0.29m | 6:41PM0.29m | 7:16AM0.37m | 7:06PM0.45m | 7:51AM0.51m | 7:29PM0.62m | 8:29AM0.68m | 7:49PM0.80m | 9:16AM0.87m | 8:05PM0.98m | 10:40AM1.02m | 8:00PM1.16m | |||||||
— | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | |
6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 16 | SW 16 | SW 16 | SSW 18 | SSW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
1599 | 1191 | 886 | 763 | 472 | 1594 | 1611 | 1551 | 3575 | 4037 | 4448 | 3648 | 2992 | 2383 | 1254 | 3433 | 3010 | 2389 | 2151 | 1671 | |
Swell 2 Height (m) Direction Period (s) | — | SE 5 | SW 26 | SSW 20 | SSW 18 | SSW 21 | SSW 20 | SSW 19 | — | — | SE 6 | — | — | — | SSW 18 | — | — | — | SSW 20 | S 5 |
— | 17 | 25 | 75 | 651 | 584 | 961 | 1242 | — | — | 40 | — | — | — | 1288 | — | — | — | 127 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | S 26 | — | SSW 24 | SSW 24 | SSW 21 | — | SE 6 | — | — | — | — | — | — | — | — | — | — | — | SSW 24 |
— | 13 | — | 55 | 55 | 705 | — | 38 | — | — | — | — | — | — | — | — | — | — | — | 55 | |
Wind waves Height (m) Direction Period (s) | SE 4 | ESE 5 | SE 5 | SE 5 | SE 6 | SE 5 | SE 5 | — | SE 6 | SE 6 | — | SE 6 | SE 7 | SE 7 | SE 7 | SE 7 | SE 6 | SE 6 | SE 6 | ESE 6 |
25 | 37 | 18 | 29 | 20 | 16 | 38 | — | 32 | 56 | — | 49 | 99 | 158 | 184 | 169 | 94 | 74 | 66 | 22 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 38 | 7 | 7 | 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.











