Old Volcano Bay
Why dive here
With 82+ marine species recorded in the area - including manta rays, mobula rays (devil rays), whale sharks and pufferfish - Old Volcano Bay offers some of Siargao's richest reef diving. Water ranges 27-30°C, warmest June, August, September.
Old Volcano Bay in Siargao makes for a relaxed dive, especially if you’re just getting your fins wet or haven’t been in the water for a while. We typically hit a maximum depth of around 19 meters, meandering over a mostly sloping coral reef. It’s a gentle introduction to Siargao’s underwater scene, often with plenty of juvenile reef fish flitting about the hard coral formations. We’ve spotted parrotfish and the occasional lionfish tucked into crevices. Conditions are usually pretty mild here, making it a good spot for building confidence.
Typical Old Volcano Bay Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 19m - Advanced Open Water certification recommended.
Always perform a 3-minute safety stop at 5m before surfacing.
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Conditions
Ocean conditions, forecast and tides for Old Volcano Bay
Old Volcano Bay Ocean Conditions
Monthly averages for Old Volcano Bay, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.91, 125.03) (20km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.2–31.2°C
Current Speed
1 cm/s
Direction: S (180°)
Chlorophyll-a
0.333 mg/m³
Moderate productivity
Salinity
32.39 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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