
Surf Forecasts:
Keramas surf forecast from 10 Aug 2026:
- Best quality surf: Saturday 15 Aug, 8PM (local time) - 7ft (2.2m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Monday 10 Aug, 11PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,634 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 8PM (local time) - 7ft (2.2m), 17s period with SSW swell.
Best Forecast Surf Conditions for Keramas this week:
The surf forecast for Keramas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 15) at 8PM. The primary swell is predicted to be 2.2m and 17s period with a secondary swell of 0.6m and 5s. Another secondary swell of 0.6m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Keramas in the next 16 days are 3.0m 17s 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+) | 8PM (Sat 15th Aug) | 7ft (2.2m) 17s |
| Best Surf | 8PM (Sat 15th Aug) | 7ft (2.2m) 17s |
| Most Powerful | 11PM (Mon 10th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Keramas over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about what’s coming up for Keramas over the next couple of weeks.
We’ve got a solid, persistent run of SSW groundswell lined up, but it’s a bit of a mixed bag with the winds. The standout window is definitely the opening days, with Monday 10th August through to Tuesday 11th offering the best conditions. After that, the trade winds start to mess with the surface a fair bit, and the quality drops off.
Right from the get-go on Monday 10th August, it’s looking clean. We’ve got a chunky 10ft SSW groundswell running with a very long 18 second period, and the wind is light and offshore from the SSE. That’s a serious amount of energy in the water – we’re talking combined swell energy of 4753. The water temperature is a balmy 81°, which is about average for this time of year, so no surprises there. Keramas is a reef break, so that long period, powerful swell will be lining up beautifully. This is the pick of the forecast, no question. It’s intermediate to expert territory at that size, but it’s going to be pumping. Just keep in mind it can get a crowd here sometimes.
Tuesday 11th August keeps the momentum going. The morning is still 10ft but with a slightly shorter 16 second period, and again light offshore winds from the SE. Energy is still massive at 4447. The afternoon might see the wind pick up a little to a gentle breeze from the SSE, but the swell is still clean and the energy jumps to 5782. These two days are the ones to circle.
From Wednesday 12th August, the wind turns cross-onshore. The swell backs off a touch to 7ft in the morning, but the 17 second period keeps it lined up. Still, the surface gets a bit choppy, and the scores drop off. It’s surfable, but it’s not the glassy perfection of the first two days.
Thursday 13th August holds 8ft S swell, but the cross-onshore wind is still there. The energy is strong (3463 to 3690), but it’s a bit of a fight. The rest of that week, right through to the weekend of the 15th and 16th, is a similar story. Swell hovers around the 7ft mark, with 16 to 17 second periods, but the wind is a persistent cross-onshore or light onshore. It’s not terrible, but it’s not the clean, groomed stuff we had at the start.
We hit a bit of a lull around Monday 17th and Tuesday 18th August, where the swell drops to 5ft and the wind is still messy. The energy dips below 1000, so it’s weaker. Things pick up again from Wednesday 19th August, with the swell rebuilding to 7ft, but the wind is still an issue.
The real wildcard is on Sunday 23rd August. The swell height drops right off to 4ft, but the period goes absolutely massive – 21 seconds. That’s a very long period groundswell, and the energy is still 2105. It’s a reef break, so that long period will wrap in nicely, but 4ft is small. It could be a sneaky clean session if the wind plays ball, but it’s a low-probability call.
The final peak comes at the end of the window, on Monday 24th August. We see 8ft SSW swell with a 17 second period, and the wind is light offshore. The energy rockets back up to 3790. That’s a promising one looking into the second week, but it’s a long way out, so treat it with a bit of caution.
So, to sum it up: Monday 10th and Tuesday 11th August are your absolute go-to days. Big, powerful, offshore, and clean. After that, the wind is a constant battle until that last pulse on the 24th. If you can only make one call, make it the first two days.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 23°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Fri night. Warm (max 27°C on Thu afternoon, min 22°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 17 | SSW 15 | SSW 18 | S 17 | S 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
Wave Graph | ||||||||||||||||||||
4753 | 5592 | 4447 | 3857 | 2511 | 2641 | 1652 | 1480 | 3463 | 3649 | 2979 | 2195 | 1613 | 1143 | 2437 | 2735 | 2216 | 1919 | 1652 | 1187 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | on | on | glassy | cross-on | on | cross-on |
High Tide | 10:13PM1.25m | 8:37AM2.01m | 10:37PM1.40m | 9:34AM2.12m | 11:03PM1.55m | 10:23AM2.17m | 11:30PM1.70m | 11:06AM2.14m | 11:58PM1.83m | 11:46AM2.05m | 00:26AM1.92m | 12:24PM1.90m | 00:54AM1.97m | |||||||
Low Tide | 2:08AM1.05m | 4:07PM0.12m | 3:21AM0.90m | 4:43PM0.05m | 4:15AM0.73m | 5:16PM0.04m | 5:02AM0.59m | 5:46PM0.08m | 5:46AM0.49m | 6:13PM0.17m | 6:27AM0.44m | 6:38PM0.29m | ||||||||
— | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | |
6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 26 | 24 | 25 | 26 | 24 | 25 | 27 | 23 | 26 | 27 | 23 | 25 | 26 | 23 | 26 | 26 | 24 | 27 | 27 | 24 |
Feels °C | 27 | 27 | 27 | 27 | 26 | 26 | 28 | 25 | 27 | 28 | 25 | 27 | 27 | 26 | 28 | 27 | 28 | 29 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 17 | SSW 15 | SSW 18 | S 17 | S 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
4753 | 5592 | 4447 | 3857 | 2511 | 2641 | 1652 | 1480 | 3463 | 3649 | 2979 | 2195 | 1613 | 1143 | 2437 | 2735 | 2216 | 1919 | 1652 | 1187 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SSW 19 | — | S 21 | S 19 | S 12 | — | — | SSW 24 | S 21 | S 21 | SSW 19 | SSE 7 | — | SSE 6 | — | NE 7 | SE 5 |
— | — | — | 1860 | — | 36 | 118 | 678 | — | — | 54 | 231 | 229 | 1049 | 17 | — | 23 | — | 8 | 16 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SSW 21 | — | — | — | — | — | — | — | SSE 7 | — | — | — | — | — | — |
— | — | — | — | — | 86 | — | — | — | — | — | — | — | 30 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 7 | SE 5 | — | SE 5 | S 13 | — | SE 5 | — | SSE 8 | SSE 8 | — | SE 5 | SE 5 | — | SE 5 | SE 5 | SE 5 |
— | — | — | 65 | 17 | — | 28 | 1077 | — | 41 | — | 88 | 72 | — | 22 | 23 | — | 20 | 20 | 28 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 0 | 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.











