Surf Forecasts:
Ketewel surf forecast from 7 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 11AM (local time) - 11ft (3.5m), 17s period, S swell with 6,221 kJ wave energy.
Best Forecast Surf Conditions for Ketewel this week:
The most powerful waves expected at Ketewel in the next 16 days are 3.5m 17s and forecast to arrive on Thursday (Aug 13) at 11AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 13th Aug) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Ketewel over the next 16 days.
The Lowdown
Alright crew, Rusty here. Let’s break it down.
We’ve got a solid stretch of Southern Ocean groundswell coming into Ketewel, but the wind is going to be a constant headache. The next two weeks have plenty of size, but that persistent cross-onshore flow will keep the surface bumpy. You’ll need to pick your moments when the wind is lightest.
It starts on Friday, August 7th, with a 8ft SSW groundswell at a long 16-second period. That’s a lot of energy (combined energy of 3200), but a 15 km/h SE cross-onshore wind is going to mess up the surface. It’s rideable for the advanced crew, but it’s marginal. The water temp is 80°, which is pretty normal for this time of year.
The weekend is similar, with the swell holding around 7ft to 8ft, and that same 16-second period. The wind stays cross-onshore, and Saturday morning has rain showers. Expect a lot of “marginal” conditions.
The real story starts Monday, August 10th. The morning swell period jumps to 19 seconds – that’s a proper groundswell – and the energy is 3379. Still, the wind is cross-onshore. By Monday afternoon, the swell hits 10ft from the SSW at 18 seconds, with energy at 4888. That’s a lot of water. Tuesday the 11th keeps that 10ft size, with energy peaking at 5783 in the afternoon. The wind is still onshore. At that size, this is expert-only territory, and with the wind, it’s going to be a wild, bumpy mess. This is more of a kite-surfing day than a clean paddle session.
The biggest day is Thursday, August 13th. The morning shows a 12ft S swell at 17 seconds, with a massive combined energy of 6221. That’s serious power. But the wind is onshore at 20 km/h, so it’s going to be raw and ugly. For the hardcore experts only.
After that, we settle back into the 7ft to 8ft range for the rest of the run, with periods between 15 and 17 seconds. The wind does ease up a bit on the 14th and 15th, with a lighter 10 km/h breeze, but it’s still cross-onshore. You’ll get some small wind ripples on the face.
There are no perfect, glassy days in this forecast. The constant cross-onshore or onshore wind is the problem. The swell is solid, with plenty of energy (often in the 3000-5000 range), but the quality will always be compromised. If you’re an advanced or expert surfer who doesn’t mind chop, you’ll get waves. If you’re looking for pristine conditions, you’ll be waiting.
Stay safe out there.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Warm (max 27°C on Sat afternoon, min 23°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 26°C on Mon afternoon, min 23°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 17 | SSW 15 | S 19 | S 17 | S 17 | SSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3127 | 3051 | 2716 | 2472 | 2198 | 1982 | 1757 | 1413 | 2159 | 4888 | 5592 | 4447 | 3857 | 2831 | 2323 | 1434 | 5427 | 6221 | 5367 | 3574 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | on | cross-on | on | on | on |
High Tide | 3:20PM1.51m | 3:41AM2.22m | 5:05PM1.30m | 5:06AM2.13m | 8:04PM1.35m | 6:58AM2.17m | 9:15PM1.57m | 8:23AM2.32m | 9:56PM1.81m | 9:24AM2.49m | 10:30PM2.04m | 10:12AM2.62m | 11:02PM2.26m | |||||||
Low Tide | 8:43PM0.89m | 11:12AM0.79m | 9:35PM1.08m | 1:15PM0.72m | 11:41PM1.22m | 2:39PM0.52m | 1:51AM1.14m | 3:31PM0.33m | 3:06AM0.93m | 4:11PM0.18m | 4:00AM0.70m | 4:47PM0.09m | 4:46AM0.50m | |||||||
 |  |  | |  | | |  |  | | | | | | | | | | | | |
 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:28 | — | — |
 | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — |
mm | — | — | 1 | — | 2 | 1 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 26 | 24 | 26 | 27 | 24 | 26 | 27 | 24 | 25 | 26 | 24 | 25 | 26 | 24 | 25 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 26 | 26 | 27 | 28 | 25 | 25 | 27 | 25 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 17 | SSW 15 | S 19 | S 17 | S 17 | SSW 16 |
| kJ | 3127 | 3051 | 2716 | 2472 | 2198 | 1982 | 1757 | 1413 | 1204 | 4888 | 5592 | 4447 | 3857 | 2831 | 2323 | 1434 | 5427 | 6221 | 5367 | 3574 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSE 6 | SSW 19 | — | — | — | SSW 19 | — | S 6 | S 21 | — | — | — | SSE 10 |
| kJ | — | — | — | — | — | — | — | 40 | 2159 | — | — | — | 1860 | — | 84 | 424 | — | — | — | 37 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 20 | — | — | — | — | — | — | S 22 | — | — | — | — | S 24 |
| kJ | — | — | — | — | — | — | — | 202 | — | — | — | — | — | — | 37 | — | — | — | — | 11 |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 6 | SE 5 | SE 6 | SE 5 | SE 5 | SE 6 | — | SE 5 | — | — | — | SSE 7 | — | SE 6 | S 7 | — | — | — | SE 10 |
| kJ | 73 | 46 | 49 | 47 | 41 | 45 | 50 | — | 16 | — | — | — | 66 | — | 24 | 86 | — | — | — | 134 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 17 | 15 | 17 | 17 | 17 | 15 | 17 | 15 | 17 | 27 | 17 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
Best forecast wave conditions in Sanur - Bali | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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Information about the Ketewel Surf forecast
The above surf forecast table for Ketewel provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ketewel can be found by selecting the local surf guide option on the grey menu. Our Ketewel 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 (Ketewel) 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 Ketewel 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.
Ketewel is 7 km (4 miles) from Denpasar. If you plan a holiday in Sanur - Bali, look for hotels and other accommodation in Denpasar. Denpasar has rooms for a wide range of budgets as well as car hire and transport links.
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