
Surf Forecasts:
Ketewel surf forecast from 14 Sep 2026:
- Best quality surf: Friday 18 Sep, 8AM (local time) - 5ft (1.6m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 20 Sep, 11PM (local time) - 6.5ft (2.0m), 16s period, SSW swell with 1,856 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 8AM (local time) - 5ft (1.6m), 14s period with SSW swell.
Best Forecast Surf Conditions for Ketewel this week:
The surf forecast for Ketewel over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 8AM. The primary swell is predicted to be 1.6m and 14s period with a secondary swell of 0.7m and 5s. Another secondary swell of 0.9m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ketewel in the next 16 days are 2.0m 16s and forecast to arrive on Sunday (Sep 20) at 11PM. Winds are predicted to be cross-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 Tuesday (Sep 15) at 2AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 18th Sep) | 5ft (1.6m) 14s |
| Best Surf | 8AM (Fri 18th Sep) | 5ft (1.6m) 14s |
| Most Powerful | 11PM (Sun 20th Sep) | 6.5ft (2.0m) 16s |
Table - best surf conditions forecast for Ketewel over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s coming up for Ketewel. It’s a reef setup that needs a south swell and offshore winds to really sing, and we’ve got a long run of mostly cross-onshore or onshore winds and marginal conditions ahead. The water temp is sitting about average for this time of year, so nothing freaky there.
The first real chance to paddle out doesn’t even come until Thursday, September 17th, and even then it’s marginal at best. The morning brings a 6ft SSW swell with a period of 14 seconds, and the combined energy is strong at 1533. But that wind is cross-on from the SE at 12 mph, making things fairly choppy. Not ideal. Thursday afternoon is similar—6ft SSW, onshore wind—so no great improvement.
We then hit a dry spell from Friday the 18th through Saturday the 19th with poor surf conditions. The swell drops to 4ft to 5ft, still with onshore or cross-on wind, and energy levels fall into the low 800s and 700s. Not worth suiting up.
Sunday the 20th shows some life: a 6ft SSW swell with a 16-second period (long period groundswell) in the afternoon, combined energy of 1762. Wind is light from the SSE at 6 mph and onshore. The long period means the reef could shape up nicely, but the onshore wind is a bummer. It’s marginal, but it’s the best we’ve seen so far.
Monday the 21st is similar—6ft SSW, 14 seconds, light onshore winds. Still marginal. Then Tuesday the 22nd drops off again with poor conditions.
Wednesday the 23rd picks back up: 6ft SSW, 16-second period, 1619 energy, but cross-on wind in the morning. Another marginal window.
The standout period looks to be around Saturday, September 26th, through Monday, September 28th. On the 26th, we’ve got 7ft SSW swell with a 15-16 second period, and the energy jumps to 2171. Wind is onshore but light at 9 mph. It’s still marginal, but the size and long period could offer some proper reef waves for advanced surfers. Sunday the 27th sees a big jump: 10ft SSW swell with an 18-second period, and energy rockets to 5908 in the morning. That is a very strong, long-period groundswell. But at 10ft, this is expert territory only—too big for beginners, and the long period might make it shut down or get unruly on the reef, especially with cross-on wind. Monday the 28th still has a solid 8ft SSW swell, 16 seconds, but again cross-on wind.
Overall, there’s no day here with clean, offshore wind. The best bet is probably Sunday, September 27th, for big-wave experts who can handle a 10ft, 18-second SSW groundswell with onshore wind. It’s raw, powerful, and only for the experienced. If you’re not in that crew, the window from the 20th to the 21st offers the most manageable size with a long period, but the wind will still be onshore. It’s a frustrating outlook, but with that much consistent swell energy, it won’t stay poor forever. Keep an eye on the wind shifts.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 28°C on Thu afternoon, min 24°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
Wave Graph | |||||||||||||||||||
1178 | 1147 | 1178 | 1125 | 1024 | 1130 | 1275 | 1374 | 1223 | 1023 | 854 | 733 | 630 | 585 | 487 | 807 | 1536 | 1743 | 1743 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | on | cross-on |
High Tide | 11:53PM2.71m | 12:17PM2.25m | 00:19AM2.64m | 12:44PM2.07m | 00:44AM2.51m | 1:10PM1.87m | 1:09AM2.34m | 1:37PM1.66m | 1:36AM2.15m | 2:05PM1.45m | 2:06AM1.95m | 3:01PM1.25m | 2:58AM1.74m | ||||||
Low Tide | 6:15AM0.15m | 6:05PM0.40m | 6:45AM0.25m | 6:28PM0.53m | 7:16AM0.40m | 6:48PM0.68m | 7:49AM0.59m | 7:06PM0.84m | 8:28AM0.80m | 7:16PM1.01m | 9:36AM1.00m | 6:49PM1.18m | |||||||
— | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | |
6:15 | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 28 | 25 | 28 | 28 | 25 | 28 | 27 | 25 | 27 | 28 | 25 |
Feels °C | 27 | 28 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 30 | 30 | 28 | 30 | 29 | 29 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
1178 | 1147 | 1178 | 1125 | 1024 | 1130 | 1275 | 1374 | 1223 | 1023 | 854 | 733 | 630 | 585 | 487 | 807 | 1536 | 1743 | 1743 | |
Swell 2 Height (m) Direction Period (s) | NE 7 | NE 7 | NE 7 | NE 7 | SW 21 | NE 7 | S 6 | SSW 18 | S 7 | SE 6 | SW 22 | SE 6 | SE 6 | SSW 19 | SW 18 | SSW 13 | SE 7 | SE 6 | SE 6 |
8 | 7 | 8 | 8 | 18 | 7 | 20 | 127 | 26 | 27 | 18 | 16 | 16 | 137 | 330 | 362 | 21 | 19 | 19 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 16 | — | — | — | — | — | NE 6 | SSW 21 | SSW 20 | NE 6 | NE 6 | SE 6 | — | — | SSW 8 |
— | — | — | — | 5 | — | — | — | — | — | 2 | 42 | 38 | 2 | 1 | 12 | — | — | 24 | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 5 | SE 6 | SE 6 | SE 5 | SE 5 | SE 5 | SE 5 | SE 6 | — | SE 5 | — | SE 6 | SE 5 | SE 5 | ESE 6 | — | — | SE 6 |
62 | 56 | 60 | 50 | 45 | 41 | 28 | 32 | 31 | — | 22 | — | 34 | 7 | 6 | 22 | — | — | 40 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 15 | 15 | 15 | 17 | 15 | 15 | 15 | 15 | 17 | 15 | 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.










