Cimaja
Indonesia · Indo-Pacific
Right now
DrizzleWind and swell direction
Swell: 1.5m S
Wind: 5 km/h ENE (offshore)
Beach faces: SW
Very light wind. Expect glassy, clean conditions.
Swell direction is a decent angle for this beach.
Today hour by hour
Updated 12:41Expected crowds
Prediction model v16amDawn patrol territory
7amMidweek quiet
Next 7 days
Forecast via Open-MeteoWhat to pack
- Boardshorts weather. 30°C water.
- Standard shortboard conditions.
- Rain jacket for between sessions.
Today's briefing
1.5m swell at 12s. Moderate winds. Water temperature 30°C.
AI-generated summary for Cimaja. Always check local reports before heading out.
Forecast accuracy at Cimaja
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 6am (score: 49). 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 slightly above average for late April.
Comparing the 7-day forecast to the last 5 years of marine data for the same week at Cimaja.
What's driving it
Recent form
Last 3 days of logged conditions.
About Cimaja
Cimaja is a highly consistent right-hand break located in West Java, Indonesia. The seafloor comprises a mix of rounded river cobblestones and an underlying coral reef, which provides a highly stable bathymetric platform. This structure intercepts unobstructed south-westerly Indian Ocean groundswells, forcing the wave to peel predictably along the rocky bank. The break requires a north-easterly offshore wind to groom the face, preventing chaotic onshore chop. Because the wave does not jack violently like shallower coral reefs, but rather offers a steep, workable wall, it is highly suitable for intermediate to advanced surfers. The wave permits a clean take-off transitioning into a sequence of carving sections. While generally forgiving on smaller swells, heavier ocean pulses produce thick, powerful lips that demand confident navigation and precise rail engagement. The consistency of the cobblestone structure provides a highly reliable canvas for progression.
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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 Cimaja. 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 Cimaja?
Check our timing score heatmap above for a week-by-week breakdown combining surf conditions with crowd pressure.