
Surf Forecasts:
Keramas surf forecast from 4 Aug 2026:
- Most powerful swell: Monday 10 Aug, 11PM (local time) - 10ft (3.0m), 18s period, SSW swell with 5,344 kJ wave energy.
Best Forecast Surf Conditions for Keramas this week:
The most powerful waves expected at Keramas in the next 16 days are 3.0m 18s and forecast to arrive on Monday (Aug 10) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Mon 10th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Keramas over the next 16 days.
The Lowdown
Alright mate, Rusty here. Let’s have a look at what’s cooking for the next couple of weeks.
First up, we’re talkin’ Keramas. The water’s sitting at a warm 81°, which is pretty normal for this time of year – no surprises there. The whole forecast period is a bit of a mixed bag, though. The swell’s gonna be consistent from the SSW, which is exactly what this reef wants to see, but the wind is the real story here. It’s mostly from the SE, which is cross-on for this break, so the wave faces are gonna be a little bumpy and choppy a lot of the time. The combined swell energy is moderate to strong, with values mostly in the 1000s and 2000s (like 1362 on Tuesday morning), but that onshore wind is really holding things back.
For the first week, from Tuesday, August 4th right through to Sunday, August 9th, the surf is there but it’s just not clean. The swell hovers around 5 ft to 8 ft, with periods around 14 to 17 seconds, which is a nice long-period groundswell full of energy, but that cross-on breeze is messing with the shape. It’s a bit frustrating, honestly. The mornings are a touch better, with lighter winds, but still not glassy. The conditions are described as “marginal” and scores are low, so it’s not a time to get too excited. There’s even some rain showers on Sunday morning.
Now, the standout window starts to look a bit more interesting from Monday, August 10th, and really peaks around Tuesday, August 11th and Wednesday, August 12th. On Monday afternoon, the swell bumps up to 8 ft from the SSW with a period of 18 seconds – that’s some serious energy (4574)! The wind is offshore, so it’s gonna be clean and lined up. This is a big swell, over 8 ft, so this is for the experts only. The same goes for Tuesday morning, August 11th, with 10 ft SSW swell and 17 second period, combined energy hitting 4513 – that’s a powerful, heavy wave. The wind is cross-on again in the morning, but the afternoon cleans up with offshore winds and 8 ft swell. This is the best of the whole outlook: big, powerful SSW groundswell, and periods of clean offshore wind. After that, Wednesday, August 12th still has good size, around 7 ft, but the wind turns cross-on again.
After that mid-week peak, the swell drops back a bit but stays rideable through the end of the second week. The 14th and 15th of August still have some 7 ft to 8 ft SSW swell, but the wind is mostly cross-on or onshore, keeping it choppy. The 16th and 17th see the size drop to 4 ft to 6 ft, with light offshore winds at times, so it’s cleaner but smaller. The 19th of August shows another pulse of energy, with 10 ft SSW swell and an 18-second period (5464) on Wednesday afternoon, with light offshore winds again – that’s another big, powerful day for the crew that can handle it.
The bottom line: Keramas is a consistent reef that’s always got some swell, but the wind is the limiting factor. The true standout is the window from Monday afternoon, August 10th, through Tuesday, August 11th, where you get the biggest, cleanest waves of the period. After that, it’s a case of picking the cleaner windows in the mornings and afternoons, but don’t expect perfection. It’s a reef break, so that long-period groundswell will be wrapping in nicely.
Stay stoked, and keep your eyes on the horizon.
Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Tue morning, min 23°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat night. Warm (max 28°C on Fri morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 14 | SSW 13 | SSW 14 | SSW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 19 | SSW 18 | SSW 17 |
Wave Graph | |||||||||||||||||||||
1061 | 961 | 722 | 956 | 996 | 2268 | 2164 | 1943 | 1826 | 2729 | 2890 | 3051 | 2503 | 2271 | 2226 | 1982 | 1956 | 1525 | 1513 | 4574 | 5223 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | on | cross-on |
High Tide | 1:22PM1.63m | 1:57AM1.88m | 2:01PM1.44m | 2:30AM1.89m | 2:51PM1.22m | 3:13AM1.87m | 4:16PM1.01m | 4:15AM1.83m | 5:48AM1.82m | 10:05PM1.11m | 7:24AM1.89m | 10:13PM1.25m | |||||||||
Low Tide | 7:31PM0.46m | 8:26AM0.61m | 7:53PM0.58m | 9:24AM0.63m | 8:15PM0.71m | 10:46AM0.64m | 8:33PM0.84m | 12:47PM0.58m | 2:27PM0.41m | 11:38PM1.10m | 3:24PM0.24m | 2:08AM1.05m | |||||||||
6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | |
— | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | 1 | — | — | — |
Temp °C | 27 | 27 | 24 | 26 | 27 | 24 | 27 | 27 | 24 | 28 | 28 | 24 | 27 | 27 | 24 | 25 | 26 | 24 | 25 | 26 | 23 |
Feels °C | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 29 | 28 | 27 | 28 | 27 | 26 | 26 | 26 | 26 | 27 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SSW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 18 | SSW 17 |
1061 | 961 | 722 | 956 | 996 | 2268 | 2164 | 1943 | 1826 | 2729 | 2890 | 3051 | 2503 | 2271 | 2226 | 1982 | 1956 | 1525 | 1204 | 4574 | 5223 | |
Swell 2 Height (m) Direction Period (s) | NE 7 | NE 7 | SE 7 | SSW 22 | SSW 20 | NE 7 | — | — | — | SE 6 | — | — | SE 6 | — | — | — | — | — | SSW 19 | — | — |
2 | 2 | 54 | 156 | 450 | 8 | — | — | — | 66 | — | — | 67 | — | — | — | — | — | 1513 | — | — | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SW 17 | SSW 17 | NE 7 | ENE 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
215 | 284 | 344 | 2 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 7 | SE 7 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | — | SE 6 | SE 6 | — | SE 6 | SE 5 | SE 5 | SE 6 | SE 6 | SE 5 | — | — |
84 | 84 | 91 | 51 | 44 | 56 | 46 | 85 | 89 | — | 79 | 39 | — | 51 | 38 | 45 | 50 | 36 | 21 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Best forecast wave conditions in Sanur - Bali | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Keramas Surf forecast
The above surf forecast table for Keramas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Keramas can be found by selecting the local surf guide option on the grey menu. Our Keramas 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 (Keramas) 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 Keramas 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.
Keramas is 10 km (6 miles) from Klungkung. If you plan a holiday in Sanur - Bali, look for hotels and other accommodation in Klungkung. Klungkung has rooms for a wide range of budgets as well as car hire and transport links.











