Surf Forecasts:
Keramas surf forecast from 13 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 5AM (local time) - 7ft (2.2m), 19s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 11PM (local time) - 8ft (2.5m), 17s period, SSW swell with 4,277 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 2AM (local time) - 5.5ft (1.7m), 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 (Aug 19) at 2AM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 1.2m and 19s. 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 17s and forecast to arrive on Wednesday (Aug 19) 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+) | 2AM (Wed 19th Aug) | 5.5ft (1.7m) 16s |
| Best Surf | 5AM (Wed 19th Aug) | 7ft (2.2m) 19s |
| Most Powerful | 11PM (Wed 19th Aug) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Keramas over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at this stretch.
Well, it’s a bit of a mixed bag for *Keramas* over the next couple of weeks. That deep-water reef is a powerful machine when it turns on, but the wind is going to be the story for a while. We’ve got a consistent, solid groundswell from the south-southwest rolling in, with periods hanging around 15-17 seconds, which is serious energy. The combined energy numbers are mostly in the strong to very strong range, like 3707, meaning there’s plenty of push. The water temp is sitting at a nice 80°, right about average for this time of year, so no need for a thick suit.
Thursday the 13th kicks things off with an 8ft S swell with a 16-second period. That's a lot of water moving fast, and with a cross-onshore wind, it’s going to be a choppy, messy beast. Not the clean, peeling perfection Keramas is famous for. Friday the 14th and Saturday the 15th are similar stories: plenty of swell (7ft to 7ft), still from the SSW, but that persistent onshore wind is killing the quality. The scores are low because the surface is too bumpy.
Sunday the 16th sees the swell dip a touch, but the wind stays messy. Honestly, the first week is a grind. There are a few windows on Tuesday the 18th and Wednesday the 19th where the breeze drops out to a light 6 mph, and the combined energy jumps back into the 2000s and even 3000s. Wednesday the 19th looks promising with a 7ft to 8ft SSW groundswell and a very long 18-second period. Even though it’s a slight cross-onshore, with such light wind, the face could be pretty smooth. That is the standout in the first half – a powerful, long-period groundswell hitting a world-class reef. Just keep in mind, with these long-period swells, the sets will be bigger and less frequent, making paddling out a little easier between them, but you better be on your game when they arrive. Crowds are going to be a factor here as the consistency is very high.
Moving into the second week, the pattern holds. We get another pulse of strong SSW swell around Thursday the 20th (8ft, 16 seconds) and into the 22nd. The cross-onshore is still there, but it's a gentle breeze, which keeps the chop manageable. The best-looking day of the entire run might just be Friday the 28th. We’ve got a clean 7ft SSW swell with a 15-second period and a decent combined energy of 3132 (strong), and the wind looks to be properly onshore. Keep an eye on that one, but it’s a long way out.
Overall, this isn't a period for perfect, glassy Keramas. It’s a period for solid, powerful swell with a persistent, but often light, cross-onshore wind. That makes it a more challenging session, but for the experienced surfer, there’s rideable, hefty surf almost every day. If you’re a beginner, the swell is too big (over 5ft and often over 8ft) for you on most days.
Stay safe out there.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 23°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Tue morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 15 | SSW 19 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
Wave Graph | |||||||||||||||||||||
2195 | 1613 | 1220 | 2735 | 2703 | 2161 | 1919 | 1472 | 1016 | 778 | 668 | 448 | 880 | 1772 | 1307 | 3323 | 3734 | 4032 | 3659 | 3037 | 2417 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-on | on | cross-on | glassy | cross-on | on | glassy | cross-on | cross-on | cross-on |
High Tide | 11:06AM2.14m | 11:58PM1.83m | 11:46AM2.05m | 00:26AM1.92m | 12:24PM1.90m | 00:54AM1.97m | 12:59PM1.71m | 1:21AM1.97m | 1:33PM1.51m | 1:49AM1.92m | 2:06PM1.31m | 2:17AM1.83m | 2:41PM1.11m | 2:50AM1.72m | |||||||
Low Tide | 5:46PM0.08m | 5:46AM0.49m | 6:13PM0.17m | 6:27AM0.44m | 6:38PM0.29m | 7:08AM0.44m | 7:00PM0.41m | 7:48AM0.49m | 7:20PM0.55m | 8:30AM0.57m | 7:36PM0.67m | 9:20AM0.67m | 7:45PM0.79m | ||||||||
6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | |
— | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 24 | 27 | 28 | 24 | 27 | 28 | 24 | 27 | 27 | 24 | 28 | 28 | 24 | 27 | 28 | 24 | 27 | 27 | 24 |
Feels °C | 28 | 28 | 26 | 29 | 29 | 27 | 29 | 30 | 28 | 29 | 29 | 28 | 30 | 30 | 27 | 29 | 29 | 27 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 14 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
2195 | 1613 | 1143 | 2735 | 2703 | 2161 | 1919 | 1472 | 1016 | 778 | 668 | 434 | 880 | 1772 | 1307 | 3323 | 3734 | 4032 | 3659 | 3037 | 2417 | |
Swell 2 Height (m) Direction Period (s) | S 21 | S 21 | SSW 19 | — | — | SE 5 | SSE 5 | — | SE 5 | SE 5 | SSW 20 | SSW 18 | SSW 13 | SSW 20 | SSW 19 | SE 6 | ESE 6 | ESE 6 | ESE 6 | E 7 | — |
231 | 229 | 1220 | — | — | 13 | 6 | — | 18 | 16 | 38 | 448 | 295 | 307 | 1055 | 11 | 21 | 16 | 16 | 22 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SE 7 | — | — | — | — | — | S 26 | — | SSW 24 | SE 6 | SSW 21 | SE 5 | SE 6 | NE 7 | — | — | — | — | — |
— | — | 35 | — | — | — | — | — | 13 | — | 56 | 26 | 516 | 13 | 18 | 7 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 8 | SSE 8 | — | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 6 | — | SE 5 | — | SE 5 | — | — | — | — | — | — | SE 7 | SE 6 |
88 | 72 | — | 20 | 19 | 21 | 16 | 21 | 31 | — | 27 | — | 17 | — | — | — | — | — | — | 11 | 10 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 0 | 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.











