Surf Forecasts:
Ketewel surf forecast from 8 Sep 2026:
- Most powerful swell: Wednesday 9 Sep, 8AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,173 kJ wave energy.
Best Forecast Surf Conditions for Ketewel this week:
The most powerful waves expected at Ketewel in the next 16 days are 2.5m 16s and forecast to arrive on Wednesday (Sep 09) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 7s period and expected on Sunday (Sep 13) at 2PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Wed 9th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Ketewel over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down the next 16 days for Ketewel.
We start off with some serious swell from Tuesday the 8th through Thursday the 10th – waves are running 5ft to 8ft from the SSW. The energy is pumping, with readings in the 1700 to 3000 range. But the wind is onshore from the SE, so it’s messy. The water is a warm 80°, which is about normal for this time of year, so that’s fine, but the surface is chopped up. This is a reef break for advanced surfers only, and it’s inconsistent, so it’s not a total loss, but the conditions are marginal.
Friday the 11th and Saturday the 12th, the wind goes cross-onshore, and the model calls it "poor surf conditions." The swell drops to 4ft to 6ft, but it’s choppy and not worth it. Sunday the 13th through Monday the 14th, same story: cross-onshore wind, moderate at times, and the wave quality is gone.
From Tuesday the 15th to Saturday the 19th, the swell hangs around 4ft to 6ft, but the wind is persistent from the SE, either cross-on or onshore. The energy drops into the 900 to 1400 range – it’s weak. The surf is either poor or very marginal.
Here’s the standout: Sunday the 20th of September. While the morning is still a bit cross-onshore, the swell picks up to 6ft from the SSW with a 16-second period. The energy is moderate, at 1519. The real gem is Monday morning the 21st of September: the wind goes light and onshore, and we’ve got a 4ft swell from the SSW at 14 seconds. It’s not huge, but it’s clean.
But the best on offer is Tuesday the 22nd of September. The afternoon sees a 5ft SSW swell with a very long 21-second period. The energy is strong, at 2639. The wind is light from the S, onshore, but with that period, the wave shape will be proper. This is a long-period groundswell, so it’ll be lined up and powerful on this reef. It’s over 5ft, so it’s not for beginners, but for advanced guys, that’s a proper session. It’s inconsistent here, so you’ll need patience, but the wait will be worth it.
Then Wednesday the 23rd of September looks promising too – 7ft to 8ft of SSW swell, with energy in the 3300 to 3800 range. That’s big, and the wind is light from the SSE, so it’s clean. That’s expert territory.
Overall, the first week is a write-off due to wind. The best windows are on the 21st and 22nd of September, with the 22nd being the real standout.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Tue morning. Warm (max 26°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Sun night. Warm (max 27°C on Fri morning, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 19 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1323 | 1726 | 2339 | 2903 | 2576 | 1809 | 1491 | 2046 | 1794 | 1663 | 1507 | 924 | 845 | 638 | 1503 | 1682 | 2230 | 1787 | 1305 | 1322 | 1209 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:07PM1.73m | 8:33AM2.21m | 9:37PM2.00m | 9:24AM2.39m | 10:05PM2.26m | 10:06AM2.50m | 10:33PM2.47m | 10:42AM2.53m | 11:00PM2.63m | 11:16AM2.49m | 11:27PM2.71m | 11:47AM2.39m | 11:53PM2.71m | ||||||||
Low Tide | 2:35PM0.59m | 2:19AM1.06m | 3:17PM0.42m | 3:15AM0.78m | 3:50PM0.29m | 3:58AM0.51m | 4:20PM0.22m | 4:35AM0.31m | 4:48PM0.20m | 5:10AM0.17m | 5:15PM0.23m | 5:43AM0.12m | 5:41PM0.30m | ||||||||
 | |  | |  |  |  | |  | |  | | | | | | | | | | | |
 | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — |
mm | 2 | 1 | 4 | 1 | — | — | 2 | — | 1 | — | — | 3 | — | — | 3 | — | — | 4 | — | — | 1 |
Temp °C | 26 | 26 | 24 | 25 | 26 | 24 | 26 | 26 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 |
Feels °C | 28 | 27 | 26 | 27 | 28 | 27 | 28 | 27 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 28 | 27 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
| kJ | 1259 | 1323 | 2339 | 2903 | 2576 | 1809 | 1491 | 2046 | 1794 | 1663 | 1507 | 924 | 845 | 638 | 1503 | 1682 | 2230 | 1787 | 1305 | 1322 | 1209 |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SSW 18 | S 12 | — | — | SSW 18 | SSW 19 | — | SW 26 | SW 26 | SW 24 | SSW 10 | SSW 21 | SW 21 | SSW 14 | SSW 14 | NE 7 | SE 6 | SE 6 | SE 6 | SE 6 |
| kJ | 1323 | 1726 | 711 | — | — | 209 | 280 | — | 27 | 26 | 142 | 72 | 584 | 355 | 561 | 352 | 8 | 60 | 68 | 66 | 49 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 24 | SSW 21 | SSW 8 | NE 7 | SE 6 | — | — | NE 6 | NE 8 | NE 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 142 | 584 | 14 | 19 | 54 | — | — | 7 | 9 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 5 | SE 4 | SE 4 | SE 4 | SE 4 | SE 5 | SE 5 | SE 5 | SE 5 | SE 6 | SE 6 | SE 6 | — | SE 6 | — | — | — | SE 6 |
| kJ | — | — | — | 13 | 13 | 7 | 11 | 11 | 17 | 25 | 27 | 42 | 39 | 64 | 44 | — | 58 | — | — | — | 104 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 15 | 15 | 15 | 17 | 17 | 15 | 17 | 17 | 15 | 17 | 17 | 15 | 17 | 17 | 15 | 17 | 17 | 15 |
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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