Blue Cathedral - Siargao

Blue Cathedral is exactly what it sounds like: a large underwater cave off Siargao, dropping to 34m. We found the main chamber impressive, with light shafts cutting through the gloom on clear days. It's an intermediate dive, best for those comfortable with overhead environments and deep entries. Keep an eye out for resident groupers and barracuda patrolling the mouth.

Location
Siargao, Philippines, Southeast Asia
Coordinates
9.833500, 126.168500
Type
cave
Maximum Depth
34m
Difficulty
Intermediate

Marine Protected Area: Siargao Islands Protected Landscapes and Seascapes (SIPLAS)

Best Time to Dive in Siargao

The warmest water temperatures in Siargao occur in September, averaging 30.2°C. The coolest conditions are in February at 27.7°C.

Monthly Water Temperatures

  • January: 28.1°C
  • February: 27.7°C
  • March: 27.9°C
  • April: 28.4°C
  • May: 29.1°C
  • June: 29.3°C
  • July: 29.6°C
  • August: 30.1°C
  • September: 30.2°C
  • October: 30.0°C
  • November: 30.0°C
  • December: 29.4°C

Nearby Dive Sites in Siargao

Nearest Dive Centres to Blue Cathedral

Marine Life in Siargao

Home to 87 recorded species including 62 reef fish, 7 sharks & rays, 5 seagrass & algae, 5 sea snails & nudibranchs, 3 crabs & lobsters, 2 hard corals.

Notable Species

Recommended Packing List for Blue Cathedral

Based on average water temperature of 29.2°C, currents 2 cm/s.

  • Shorty or Rashguard - warm 29°C water needs minimal exposure protection
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories