
Surf Forecasts:
Keramas surf forecast from 6 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 5AM (local time) - 6ft (1.9m), 16s 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★+): Wednesday 9 Sep, 5AM (local time) - 6ft (1.9m), 16s 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 Wednesday (Sep 09) at 5AM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 1.8m and 12s. 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+) | 5AM (Wed 9th Sep) | 6ft (1.9m) 16s |
| Best Surf | 5AM (Wed 9th Sep) | 6ft (1.9m) 16s |
| Most Powerful | 8AM (Wed 9th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Keramas over the next 16 days.
The Lowdown
G’day, it’s Rusty here.
Alright, we’re lookin’ straight at Keramas – a proper reef setup that knows how to handle a swell. Water temp’s sittin’ at 80°, which is bang on average for this time of year, so don’t stress about a weird chill. The whole 16-day window is cooked up by a consistent, long-period SSW groundswell, and the onshore winds are pretty relentless – mostly light to gentle from the SSE or SE. That means it’s gonna be onshore pretty much the whole time, which is a bit of a bummer. The energy’s moderate to strong across the board, with readings like 1645 up to 2962, so there’s plenty of push, but the wind’s gonna mess with the surface.
We kick off Sunday the 6th with morning rain showers and a 6 ft SSW swell at 14 seconds – combined energy of 1645. The wind’s from the SSE at 15 km/h, blowin’ onshore, so it’s gonna be a bit lumpy. Afternoon cleans up slightly with clouds and a lighter 10 km/h breeze, but the swell drops to 5 ft and the period stretches to a very long 16 seconds – that long-period groundswell can make a reef like Keramas throw some real nice shape, but the onshore wind is still a factor. The notes say marginal surf, and with that wind direction, it’s not gonna be clean.
Monday the 7th keeps the same story – light rain in the morning, 7 ft at 14 seconds, wind still onshore. Afternoon sees some clouds and a slight drop to 6 ft, but the period stays at 14 seconds. Still marginal. Tuesday the 8th starts with 5 ft at a very long 19 seconds (energy 2582) – that’s a proper groundswell, but the onshore wind (SSE 15 km/h) is gonna have it looking bumpy. The afternoon pumps up to 6 ft at 18 seconds (energy 2962), one of the higher energy readings, but again – onshore. Same pattern runs right through the weekend.
Now, if you’re after the best on offer – and I’m being honest, it’s a stretch – look at Wednesday the 9th. Morning has some clouds, 8 ft SSW swell at 16 seconds (energy 2903), and the wind’s from the S at 10 km/h – still onshore, but that’s the lightest wind you’ll see for a while. It’s the biggest swell of the first week and the light breeze might just keep it rideable. Afternoon stays similar at 7 ft. That 8 ft is solid intermediate to expert territory, so if you’re experienced and can handle the onshore chop, that’s your window.
From Thursday the 10th through Sunday the 13th, it’s all 6 ft–7 ft SSW swell, period between 14 and 18 seconds, and wind from the SSE to SE at 15 km/h. Still onshore. Energy stays in the 1000s to 2000s – moderate to strong – but the surface is never gonna be silky. By Monday the 14th, the wind starts goin’ cross-on from the SE, makin’ things a bit choppier.
Into the second week – Tuesday the 15th through Friday the 18th – we get a bit of a lull. Swell drops to 5 ft–6 ft, periods around 14–15 seconds, energy down around 1000–1300. Winds are SE at 15 km/h, still cross-on or onshore. It’s weaker and not worth gettin’ excited about.
But then, Saturday the 19th and Sunday the 20th – things start lookin’ up. Saturday the 19th has 6 ft–7 ft at 17 seconds (energy 1971–2255) with a lighter SSE 10 km/h breeze – still onshore, but lighter. Sunday the 20th pushes up to 8 ft at 16 seconds (energy 2834) with the same light 10 km/h wind. That’s the biggest swell of the whole run, and with the lighter wind, it’s the best chance for a decent session – even with the onshore direction. Monday the 21st holds 8 ft at 15 seconds (energy 2686), wind from the SSE at 10 km/h. That’s a standout for size and energy, but again, it’s onshore.
The whole window is onshore – there’s no glassy or offshore moment. The swell is consistent and long-period, which Keramas loves, but the wind is the letdown. For a reef this good, it’s frustrating. If you’re desperate and experienced, target Wednesday the 9th and the weekend of the 19th–21st. Otherwise, it’s a kite-surfing kind of setup this time.
– Rusty
Short Range ForecastLight rain (total 8mm), mostly falling on Sun afternoon. Warm (max 26°C on Sun afternoon, min 23°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Thu night. Warm (max 28°C on Fri morning, min 23°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 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 | SW 19 |
Wave Graph | ||||||||||||||||||||
1123 | 2049 | 1614 | 1423 | 1127 | 1323 | 1726 | 2339 | 2903 | 2368 | 1809 | 1646 | 1997 | 1972 | 1684 | 1507 | 936 | 899 | 732 | 1519 | |
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 | cross-on | cross-on | on | cross-on | on | on | cross-on |
High Tide | 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 | 10:57AM1.98m | 11:18PM2.02m | ||||||||
Low Tide | 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 | 5:10PM0.27m | |||||||||
— | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | |
6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | 2 | 3 | 2 | — | 1 | — | — | — | — | — | — | — | — | 2 | — | — | 3 | — | — | 3 |
Temp °C | 26 | 24 | 25 | 26 | 24 | 25 | 26 | 24 | 26 | 25 | 23 | 27 | 27 | 24 | 28 | 28 | 24 | 28 | 28 | 24 |
Feels °C | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 28 | 26 | 26 | 28 | 28 | 28 | 30 | 29 | 27 | 30 | 30 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | 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 | SW 19 |
713 | 2049 | 1614 | 1423 | 1127 | 1259 | 1357 | 2339 | 2903 | 2368 | 1809 | 1646 | 1997 | 1972 | 1684 | 1507 | 936 | 899 | 732 | 1519 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | — | SW 22 | SSW 22 | SSW 21 | SSW 19 | SSW 18 | SSW 12 | — | — | SSW 18 | — | — | SW 26 | SW 26 | SW 24 | SSW 10 | SSW 21 | SSW 21 | SSW 14 |
1123 | — | 19 | 91 | 487 | 1323 | 1726 | 647 | — | — | 209 | — | — | 27 | 26 | 142 | 74 | 584 | 300 | 501 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 24 | NE 6 | NE 7 | NE 7 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 142 | 6 | 8 | 8 | |
Wind waves Height (m) Direction Period (s) | — | SSE 5 | — | — | — | — | — | — | — | — | — | SE 4 | SE 4 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 6 | SE 6 |
— | 25 | — | — | — | — | — | — | — | — | — | 7 | 12 | 17 | 23 | 25 | 42 | 27 | 39 | 67 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 35 | 14 | 35 | 14 | 14 | 35 | 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 | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










