
Surf Forecasts:
Keramas surf forecast from 5 Sep 2026:
- Best quality surf: Saturday 5 Sep, 8PM (local time) - 6.5ft (2.0m), 15s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 9 Sep, 8AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,173 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 8PM (local time) - 6.5ft (2.0m), 15s 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 (Sep 05) at 8PM. The primary swell is predicted to be 2.0m and 15s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Keramas 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+) | 8PM (Sat 5th Sep) | 6.5ft (2.0m) 15s |
| Best Surf | 8PM (Sat 5th Sep) | 6.5ft (2.0m) 15s |
| Most Powerful | 8AM (Wed 9th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Keramas over the next 16 days.
The Lowdown
Alright, listen up. Rusty here, and I’m looking at the same picture through a different lens. It’s a tricky one. We’ve got a solid groundswell on the way, but the reports all say the same thing: it’s going to be marginal with questionable tide conditions. The water is a pleasant 81°, which is right where it should be for this time of year.
The main story is a consistent, long-period SSW groundswell. It’s packing a punch, with the combined energy readings hitting the thousands (1687 to 2942), which is strong. That’s the good part. The bad part is the commentary keeps calling it “marginal surf forecast or questionable tide conditions.” For a known reef like Keramas, which is very consistent and faces the SSW, that means the tide is going to be the boss. You’ll have to work around it.
Here’s the timeline. It kicks off on Saturday, September 5th, with a 6ft swell from the SSW at a very long 16 seconds. The wind is a light onshore breeze from the SE, so it’ll be a bit textured. That long period is a classic groundswell, which is magic for a reef, giving it good shape. The size bumps up to 7ft on Sunday the 6th, and the pattern holds. The energy peaks on Tuesday, September 8th, with a 6ft swell at a massive 19 seconds, giving a combined energy of 2942 – that’s a lot of water moving. Getting out will be a workout, but the sets will be worth it if you hit the tide. By Wednesday the 9th, we’re looking at 8ft at 16 seconds, which is getting into the big leagues for most folks. The wind is still light onshore, so it’s not glassy, but it’s not a disaster either.
The single best window in this whole 16-day stretch is probably Tuesday, September 8th. The swell is a manageable 6ft, but the period is a very long 19 seconds, and the combined energy is the highest of the whole run at 2942. That’s a powerful, clean groundswell. The wind is light from the SSE, onshore but light, so it won’t be a total mess. It’s not a perfect day, but it’s the best we’ve got. After that, the swell keeps coming, but the quality calls stay the same. In the second week, around September 16th, we see another pulse of 7ft swell with strong energy (2470), but the wind is still light onshore.
The big issue is the wind. It’s almost always a light onshore breeze from the SE or SSE. That’s not the perfect offshore wind you’d want, but it’s not a howling gale either. It’s a “light onshore” situation, which can be rideable, especially with the right tide. For a spot that’s “sometimes” crowded, the conditions might keep the crowds light.
To be honest, this setup looks more interesting for a kite surfer than a pure paddle surfer, given the consistent onshore wind and solid swell. If you’re a surfer, you’ll need to be patient and pick your tide windows. The forecasts can change, and it usually doesn’t stay poor for long, so keep checking.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Sat night. Warm (max 27°C on Sat morning, min 23°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue morning. Warm (max 27°C on Wed morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 16 | SSW 16 | SSW 14 | 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 |
Wave Graph | |||||||||||||||||||||
1687 | 1842 | 1399 | 1548 | 1123 | 2049 | 1614 | 1285 | 998 | 1323 | 1726 | 2339 | 2829 | 2368 | 1809 | 1668 | 1972 | 2046 | 1706 | 1706 | 1038 | |
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 | on | on | on | cross-on | cross-on | on | cross-on |
High Tide | 4:18PM0.94m | 3:36AM1.77m | 5:42AM1.70m | 9:46PM1.23m | 7:34AM1.77m | 9:48PM1.39m | 8:43AM1.89m | 10:07PM1.57m | 9:35AM1.97m | 10:30PM1.75m | 10:18AM2.01m | 10:54PM1.90m | |||||||||
Low Tide | 10:24AM0.60m | 7:17PM0.90m | 12:48PM0.59m | 2:24PM0.45m | 1:02AM1.15m | 3:11PM0.32m | 2:40AM0.96m | 3:46PM0.24m | 3:33AM0.75m | 4:16PM0.21m | 4:17AM0.55m | 4:44PM0.22m | 4:56AM0.39m | ||||||||
6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | |
— | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | 2 | — | — | 2 | 1 | — | 3 | 1 | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 27 | 27 | 24 | 26 | 27 | 24 | 26 | 27 | 24 | 26 | 26 | 24 | 27 | 27 | 24 | 26 | 26 | 24 | 27 | 28 | 24 |
Feels °C | 28 | 27 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 29 | 28 | 27 | 28 | 27 | 27 | 29 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
1687 | 1842 | 1399 | 1548 | 713 | 2049 | 1614 | 1285 | 998 | 1175 | 1216 | 2339 | 2829 | 2368 | 1809 | 1668 | 1972 | 2046 | 1706 | 1706 | 1038 | |
Swell 2 Height (m) Direction Period (s) | — | — | SSW 18 | S 18 | SSW 16 | — | SW 22 | SSW 22 | SSW 21 | SSW 19 | SSW 18 | SSW 12 | — | — | SSW 18 | SSW 18 | — | SW 26 | SW 26 | SW 24 | SSW 10 |
— | — | 443 | 232 | 1123 | — | 19 | 91 | 487 | 1323 | 1726 | 647 | — | — | 209 | 260 | — | 27 | 26 | 142 | 51 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 24 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 142 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 5 | SE 5 | — | — | SE 4 | — | — | — | — | — | — | — | — | SE 4 | SE 4 | SE 5 | SE 5 | SE 5 |
— | — | — | 23 | 13 | — | — | 9 | — | — | — | — | — | — | — | — | 6 | 12 | 19 | 25 | 31 | |
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.










