
Surf Forecasts:
Ketewel surf forecast from 6 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.
| 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
G’day, Rusty here. Let’s talk about what’s lining up at Ketewel.
Right off the bat, I’ve gotta be straight with you – the first week-and-a-bit is a real struggle. This is a sheltered reef setup, an advanced wave for sure, and it’s inconsistent by nature. The problem is the wind is blowing from the south and southeast, sitting directly onshore or cross-onshore the whole time. That’s the wrong wind for this spot (optimum is from the south). The swell is coming from the SSW with solid energy most days – wave energy is often in the four-digit range (1645 to 2962), so there’s plenty of grunt – but with the wind direction off, the quality is shot. Tides aren’t playing ball either according to the notes. For the first ten days or so, the scores are low and conditions are described as marginal or poor.
There’s a glimmer around Tuesday the 8th of September when the period jumps up to 19 seconds and the swell is 5 ft in the morning, then 6 ft in the afternoon. That long-period groundswell would have some shape and power (energy 2582 then 2962) and the wind is lighter – 6 mph – but it’s still onshore. It’s not clean, but it’s the closest you’ll get to a wave worth paddling out for early on.
Then from Wednesday the 9th, the swell sits around 7 ft to 8 ft with periods of 15 to 16 seconds. That’s strong energy (2368 to 2903) and the water temp is 80°, about average for this time of year. But the wind stays onshore or cross-onshore, so the surface stays bumpy. For a reef like Ketewel, you really want that offshore breeze.
The real standout comes late in the window. Look at the morning of Sunday the 20th of September and Monday the 21st of September. Swell is 8 ft to 8 ft from the SSW, period 15-16 seconds, and the wind is onshore at 9 mph on the Sunday morning, then a lighter 6 mph cross-onshore on Monday morning. The wave energy is pumping at 2834 and 2686 respectively. It’s not perfect, but this is the best stretch – solid groundswell, some size, and the wind is manageable. Monday morning on the 21st with a light breeze is probably your pick. This break gets hit by crowds sometimes, and with a good swell running, expect company.
But overall, the first week is mostly a write-off with onshore winds killing the quality. After the 17th, things edge toward marginal rather than poor, but it’s still a battle. The long-period swell here is great for reefs like Ketewel, but it needs that offshore wind to link up.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun morning. Warm (max 26°C on Sun afternoon, min 23°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Thu night. Warm (max 27°C on Thu afternoon, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | 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 | SSW 19 |
Wave Graph | |||||||||||||||||||||
1403 | 1123 | 2049 | 1614 | 1423 | 1127 | 1323 | 1726 | 2339 | 2903 | 2368 | 1809 | 1588 | 2021 | 1972 | 1663 | 1507 | 924 | 899 | 732 | 1242 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:18PM1.25m | 4:52AM1.98m | 8:31PM1.45m | 7:15AM2.03m | 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 | ||||||||
Low Tide | 10:54AM0.85m | 8:46PM1.19m | 1:24PM0.78m | 00:28AM1.30m | 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 | ||||||||
6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | |
— | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | 1 | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | 2 | — | — | 4 | — | — | 3 |
Temp °C | 25 | 26 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 26 | 27 | 25 | 27 | 27 | 25 | 27 | 28 | 25 |
Feels °C | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | 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 | SSW 19 |
1403 | 1123 | 2049 | 1614 | 1423 | 1127 | 1259 | 1236 | 2339 | 2903 | 2368 | 1809 | 1588 | 2021 | 1972 | 1663 | 1507 | 924 | 899 | 732 | 1242 | |
Swell 2 Height (m) Direction Period (s) | S 18 | SSW 13 | — | SW 22 | SSW 22 | SSW 21 | SSW 19 | SSW 18 | SSW 12 | — | — | SSW 18 | SSW 19 | — | SW 26 | SW 26 | SW 24 | SSW 10 | SSW 21 | SSW 21 | SSW 14 |
232 | 744 | — | 19 | 91 | 487 | 1323 | 1726 | 647 | — | — | 209 | 280 | — | 27 | 26 | 142 | 52 | 584 | 300 | 553 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 24 | NE 6 | SSW 9 | NE 7 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 141 | 6 | 15 | 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 |
10 | — | — | — | 8 | — | — | — | — | — | — | — | 7 | 8 | 15 | 19 | 25 | 34 | 32 | 44 | 69 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 27 | 15 | 27 | 17 | 15 | 27 | 17 | 15 | 15 | 15 | 15 | 17 | 15 | 15 | 17 | 17 | 17 | 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.










