Keramas
Indonesia · Indo-Pacific
Right now
DrizzleWind and swell direction
Swell: 0.9m SSW
Wind: 6 km/h E (onshore)
Beach faces: E
Very light wind. Expect glassy, clean conditions.
Swell direction is not well aligned with this beach. Expect reduced wave quality.
Today hour by hour
Updated 08:36Expected crowds
Prediction model v16amDawn patrol territory
7amMidweek quiet
Next 7 days
Forecast via Open-MeteoWhat to pack
- Small waves expected. Longboard or fish to make the most of it.
- Boardshorts weather. 30°C water.
- Rain jacket for between sessions.
Today's briefing
0.9m swell at 12s with good period. Moderate winds. Water temperature 30°C.
AI-generated summary for Keramas. Always check local reports before heading out.
Forecast accuracy at Keramas
Not enough data yet. Log a session to help build the accuracy score.
Best time to go
No great windows in the next 2 days
Best available option is Tomorrow around 7am (score: 45). Conditions are below the Good threshold but may still be surfable.
Crowd report
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Session journal
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Create free accountTide
Approximate modelBest on mid-high tide
Swell forecast
7-day forecastDaily score breakdown
This week is looking about average for late April.
Comparing the 7-day forecast to the last 5 years of marine data for the same week at Keramas.
What's driving it
Recent form
Last 3 days of logged conditions.
About Keramas
Located on the eastern coast of Bali, Keramas is a high-performance right-hand reef break shaped by a shallow, jagged volcanic coral seafloor. The bathymetric profile features a remarkably abrupt transition from deep oceanic trenches directly to a shallow reef shelf. This extreme depth gradient causes incoming south or south-westerly swells to pitch violently, producing a thick, heavy, and consistently hollow barrel right at the initial take-off zone. The wave demands a mid to incoming high tide; at lower tides, the water depth over the volcanic rock is insufficient to safely absorb the wave energy. Optimal conditions materialise during the wet season when the regional trade winds shift to the north-east, providing the essential offshore airflow to stabilise the steep wave face. The sheer power, shallow bottom, and highly technical barrel sections dictate that this location is strictly reserved for advanced surfers. It heavily favours surfers seeking high-velocity tube riding and aggressive aerial transitions rather than prolonged, relaxed carving manoeuvres across softer, slower-moving wave faces.
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Create Profile →Frequently asked questions
How often is this page updated?
Current conditions refresh every 6 hours when the cron runs. Hourly data updates every 30 minutes. The 7-day forecast, luck factor, and packing notes are all pre-computed at the same time.
What is the luck factor?
We compare the 7-day forecast to the last 5 years of marine data for the same week at Keramas. The delta tells you whether conditions are shaping up better, worse, or about the same as a typical late April.
How is 'best session' picked?
We score each day of the 7-day forecast using the same algorithm as the leaderboard, and highlight the highest scorer.
Where does the data come from?
Open-Meteo's Marine API (swell height, period, water temperature) and Weather API (wind and conditions).
Does the score capture local knowledge?
Honestly, no. Every break has tide windows, swell directions and reef contours that a global model cannot see. Treat the score as a starting point, then check a local cam.
When is the best time to surf Keramas?
Check our timing score heatmap above for a week-by-week breakdown combining surf conditions with crowd pressure.