Koh Yippon - Gulf of Thailand

Koh Yippon, tucked away in the northern reaches of Angthong Marine Park, offers a reliable, sheltered dive. It’s a site we often head to when conditions elsewhere are a bit choppy, and it rarely disappoints for a relaxed potter. The main draw is a collection of soft corals, big barrel sponges, and anemones in the shallows, making it a good spot for snorkelers too. Deeper down, past the 10-meter mark, we’ve often found large snappers hanging out, plus the occasional blue-spotted stingray cruising the sand. Schools of fusiliers and yellow-tailed barracuda can sometimes be so thick they almost block the light, which is always a treat. Maximum depth here is about 18 meters, so it’s a good choice for newer divers or those looking for a longer bottom time without pushing the limits.

Location
Gulf of Thailand, Thailand, Southeast Asia
Coordinates
9.780000, 99.680000

Marine Protected Area: Mu Ko Ang Thong Marine National Park

Best Time to Dive in Gulf of Thailand

The warmest water temperatures in Gulf of Thailand occur in January, averaging 28.2°C. The coolest conditions are in December at 28.2°C.

Monthly Water Temperatures

  • January: 28.2°C (air: 26.9°C)
  • February: 28.2°C (air: 27.3°C)
  • March: 28.2°C (air: 28.2°C)
  • April: 28.2°C (air: 29.1°C)
  • May: 28.2°C (air: 29.1°C)
  • June: 28.2°C (air: 28.6°C)
  • July: 28.2°C (air: 28.1°C)
  • August: 28.2°C (air: 28.2°C)
  • September: 28.2°C (air: 27.6°C)
  • October: 28.2°C (air: 27.2°C)
  • November: 28.2°C (air: 27.0°C)
  • December: 28.2°C (air: 26.8°C)

Nearby Dive Sites in Gulf of Thailand

Nearest Dive Centres to Koh Yippon

Marine Life in Gulf of Thailand

Home to 167 recorded species including 126 reef fish, 18 hard corals, 7 sharks & rays, 6 seagrass & algae, 2 sea cucumbers, 2 clams & mussels.

Notable Species

Recommended Packing List for Koh Yippon

Based on average water temperature of 28.2°C.

  • Shorty or Rashguard - warm 28°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