Surf Forecasts:
Keramas surf forecast from 29 Aug 2026:
- Best quality surf: Sunday 30 Aug, 11PM (local time) - 4ft (1.2m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 8AM (local time) - 6ft (1.8m), 18s period, SSW swell with 1,944 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 11PM (local time) - 4ft (1.2m), 13s 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 Sunday (Aug 30) at 11PM. The primary swell is predicted to be 0.8m and 19s period with a secondary swell of 1.2m and 13s. Another secondary swell of 0.9m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Keramas in the next 16 days are 1.8m 18s and forecast to arrive on Tuesday (Sep 01) at 8AM. 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+) | 11PM (Sun 30th Aug) | 4ft (1.2m) 13s |
| Best Surf | 11PM (Sun 30th Aug) | 4ft (1.2m) 13s |
| Most Powerful | 8AM (Tue 1st Sep) | 6ft (1.8m) 18s |
Table - best surf conditions forecast for Keramas over the next 16 days.
The Lowdown
Alright, grab your board and listen up. This is Rusty, and I'm looking at the surf ahead for our neck of the woods. It's a bit of a mixed bag, with some decent energy coming, but the wind's not always going to play ball.
The real standout window is shaping up later on. We've got a consistent south-west groundswell running through the whole 16 days, starting with solid 4ft to 6ft waves in the first few days, but the wind is a problem early on with a persistent southeast cross-onshore breeze making it choppy.
The best of the best is shaping up for Keramas. It's a world-class reef, very consistent, and when the wind drops, it's on. The waves are pointing in the right direction from the SSW, which is exactly what this break wants.
Let's break it down. Starting Sunday the 30th of August, the swell is around 4ft from the SSW, with a long 13-second period and moderate energy (1011). But that SE wind is blowing cross-onshore at 9 mph, which messes up the face. It'll be a bit of a battle. Monday the 31st sees the swell drop a touch to 4ft, but the period jumps to a juicy 18 seconds, and the energy ramps up to 1239. Still, that same cross-onshore wind is there. It's a tease.
We hit Tuesday the 1st of September, and the swell builds to 6ft with 18-second period, and the combined energy is now strong (2007). But the wind picks up to 12 mph, still cross-onshore, making it choppy and hard work. The wave quality is just marginal.
The pattern holds through Wednesday the 2nd and Thursday the 3rd. Decent swell (6ft to 5ft) and long periods (16 seconds), but that cross-onshore wind keeps the surface bumpy. The energy drops from 1683 down to 980 by Thursday. You'll get some waves, but you'll be working for them.
Friday the 4th of September drops out to a 3ft to 4ft swell, still with 14-15 second periods. The energy is weak to moderate (679 to 705). The wind lays back a little and goes 'on' in the afternoons, which is a slight improvement but still not clean.
Now, here’s where it gets interesting. Sunday the 6th of September into the second week, the swell starts to pump. We see a 5ft, 18-second SSW swell on Sunday morning with very strong energy (2573), and by the afternoon it's 8ft with a 16-second period and massive energy (3476). The wind is still onshore or cross-onshore, but it's lighter. The wave quality scores start creeping up too.
Monday the 7th of September keeps the 7ft to 7ft swells coming, but cross-onshore winds return. Tuesday the 8th sees the swell drop slightly to 5ft but then bounces back to 5ft with an 18-second period in the afternoon, and the energy jumps to 2701. The wind is onshore and light.
The absolute highlight is Wednesday the 9th of September morning. We've got a 8ft SSW swell, 16-second period, very strong energy (2719), and the wind is from the SSW at just 6 mph, coming cross-on. That's close to ideal for Keramas. It's going to be big, powerful, and with that light wind, it'll be cleaner than it has been all week. This is the session to aim for.
The rest of the second week keeps the goods coming. Friday the 11th of September has 8ft, 18-second SSW swell and a massive energy of 3956, but the wind goes back to a cross-onshore SE at 9 mph. Still, the power will be there. Saturday the 12th holds at 8ft with lighter winds.
Sunday the 13th of September has 6ft, 15-second swells, and the afternoon sees very strong energy (3026) with a light onshore breeze.
Look, this is a reef break that works best with an offshore wind from the NNW. We don't get that here, but when the wind is light and onshore or cross-onshore, it can still be good. Get ready for the 9th of September. That's your best shot.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 29°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 28°C on Wed afternoon, min 23°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 13 | SSW 13 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SSW 14 | SSW 16 | SSW 14 |
Wave Graph | |||||||||||||||||||||
615 | 606 | 578 | 928 | 1231 | 1683 | 1944 | 1821 | 1910 | 1614 | 1575 | 1141 | 933 | 770 | 561 | 630 | 395 | 634 | 829 | 661 | 1517 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | cross-on | on | on | cross-on |
High Tide | 11:29AM1.95m | 11:57PM1.95m | 12:01PM1.86m | 00:19AM2.02m | 12:34PM1.72m | 00:45AM2.06m | 1:09PM1.55m | 1:13AM2.05m | 1:47PM1.34m | 1:47AM2.00m | 2:34PM1.13m | 2:30AM1.90m | 4:18PM0.94m | 3:36AM1.77m | |||||||
Low Tide | 5:46PM0.27m | 6:05AM0.39m | 6:08PM0.34m | 6:41AM0.35m | 6:29PM0.43m | 7:19AM0.35m | 6:50PM0.54m | 8:04AM0.40m | 7:10PM0.65m | 8:59AM0.50m | 7:25PM0.77m | 10:24AM0.60m | 7:17PM0.90m | ||||||||
6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
— | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 29 | 29 | 24 | 27 | 28 | 24 | 28 | 28 | 24 | 27 | 28 | 25 | 27 | 28 | 24 | 27 | 27 | 24 | 27 | 27 | 24 |
Feels °C | 30 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 28 | 26 | 28 | 27 | 27 | 28 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 12 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SSW 14 | SSW 13 | SSW 14 |
615 | 606 | 365 | 928 | 1231 | 1683 | 1944 | 1821 | 1910 | 1614 | 1575 | 1141 | 933 | 770 | 561 | 630 | 395 | 634 | 829 | 606 | 1517 | |
Swell 2 Height (m) Direction Period (s) | SSW 21 | SSW 21 | SSW 19 | SSW 12 | SSW 11 | SSW 11 | NE 6 | NE 7 | NE 7 | NE 7 | NE 7 | ENE 7 | S 8 | NE 6 | S 18 | SSW 6 | SSW 14 | SSW 6 | SSW 6 | SSW 16 | SSW 18 |
180 | 253 | 578 | 274 | 204 | 138 | 7 | 8 | 8 | 7 | 7 | 5 | 1 | 2 | 6 | 4 | 258 | 11 | 11 | 661 | 123 | |
Swell 3 Height (m) Direction Period (s) | SSW 21 | NE 7 | SE 6 | NE 7 | NE 7 | NE 7 | — | — | — | — | — | — | S 8 | — | — | NE 6 | SSW 6 | NE 6 | — | S 6 | — |
180 | 8 | 27 | 2 | 8 | 7 | — | — | — | — | — | — | 1 | — | — | 2 | 12 | 2 | — | 17 | — | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 5 | — | SE 5 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 |
36 | 69 | — | 35 | 43 | 75 | 56 | 96 | 120 | 62 | 62 | 84 | 45 | 49 | 49 | 43 | 40 | 32 | 20 | 15 | 16 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 0 | 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.











