Simeulue
Indonesia · Indo-Pacific
Right now
ClearWind and swell direction
Swell: 1.1m S
Wind: 1 km/h NE (offshore)
Beach faces: W
Very light wind. Expect glassy, clean conditions.
Swell is coming in at an oblique angle, some refraction expected.
Today hour by hour
Updated 10:15Expected crowds
Prediction model v16amDawn patrol territory
7amMidweek quiet
Next 7 days
Forecast via Open-MeteoWhat to pack
- Boardshorts weather. 31°C water.
- Standard shortboard conditions.
- Rain jacket for between sessions.
Today's briefing
1.4m swell at 10s. Light winds keeping things clean. Water temperature 31°C.
AI-generated summary for Simeulue. Always check local reports before heading out.
Forecast accuracy at Simeulue
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 Today around 7pm (score: 44). 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 Simeulue.
What's driving it
Recent form
Last 3 days of logged conditions.
About Simeulue
Simeulue is an island off the western coast of Sumatra, Indonesia, featuring numerous high-quality reef breaks, with 'The Peak' being the most prominent. The underlying bathymetry consists of a highly structured, relatively flat coral and rock reef shelf that dictates the wave's flawless peeling mechanics. As long-period south-westerly groundswells approach from the Indian Ocean, they collide with this depth transition, jacking up into a consistent, pitching A-frame. A north-easterly offshore wind actively grooms the face, ensuring the wave remains open and symmetrical. The wave features a moderate take-off that transitions immediately into a workable wall, offering both a fast, hollow right and a longer, carving left. Because the wave energy is distributed evenly across the reef, it presents a functional canvas that is less severe than the heavier Sumatran slabs. While the coral bottom demands respect and basic spatial awareness, the predictable nature of the break universally classifies it as an idyllic venue for intermediate to advanced surfers focusing on high-performance rail-to-rail 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 Simeulue. 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 Simeulue?
Check our timing score heatmap above for a week-by-week breakdown combining surf conditions with crowd pressure.