Manana Island - Hawaii
Manana Island, off Oahu’s eastern coast, is a solid intermediate dive. Dropping to 18 meters, you’ll navigate lava tubes and swim-throughs that often hide white-tip reef sharks snoozing in the darker corners. The surge can pick up here, especially around the exposed side, making for an interesting ride through the volcanic topography. It's a good spot for divers comfortable with a bit of current and looking for some architectural interest.
- Location
- Hawaii, United States, North America
- Coordinates
- 21.329600, -157.654400
- Maximum Depth
- 18m
- Difficulty
- Intermediate
Marine Protected Area: Offshore Island, Manana Island
Best Time to Dive in Hawaii
The warmest water temperatures in Hawaii occur in September, averaging 29.0°C. The coolest conditions are in March at 25.6°C.
Monthly Water Temperatures
- January: 26.2°C
- February: 25.7°C
- March: 25.6°C
- April: 26.0°C
- May: 26.8°C
- June: 27.6°C
- July: 27.9°C
- August: 28.5°C
- September: 29.0°C
- October: 28.6°C
- November: 27.9°C
- December: 27.2°C
Nearby Dive Sites in Hawaii
- Airplane Canyon - 27m (cave)
- Airport Beach
- Airport Beach (cave)
- Anahola Beach Park
- Aquarium - Hawaii (wreck)
- Aquarium - Hawaii (reef)
- Black Rock - Hawaii (reef)
- Black Rock - Hawaii (reef)
- Cathedral II (reef)
- Cathedrals (cave)
- Corsair Wreck (wreck)
- Edge of the World
- Enenue
- Ewa Pinnacles Reef - 26m (reef)
- Fantasy Reef (reef)
Nearest Dive Centres to Manana Island
- Aaron's Dive Shop - ["PADI"]
- Affinity Freediving
- Aloha Scuba Diving Company - ["PADI"]
- Aquatic Life Divers - ["PADI"]
- Black Rock Scuba - ["PADI"]
- Blue Wilderness Dive Adventures Corp. - ["PADI"]
Marine Life in Hawaii
Home to 23 recorded species including 17 reef fish, 3 other, 2 sharks & rays, 1 whales & dolphins.
Notable Species
- Swordfish (Xiphias gladius) - Reef Fish
- Tuna (Thunnus alalunga) - Reef Fish
- Bigeye tuna (Thunnus obesus) - Reef Fish
- Dorado (Coryphaena hippurus) - Reef Fish
- Escolar (Lepidocybium flavobrunneum) - Reef Fish
- Allison's Tuna (Thunnus albacares) - Reef Fish
- Barracuda (Acanthocybium solandri) - Reef Fish
- Blue Shark (Prionace glauca) - Sharks & Rays
- Leatherback Sea Turtle (Dermochelys coriacea)
- Remora (Remora remora) - Reef Fish
- Flyingfish (Hirundichthys speculiger) - Reef Fish
- Albacore (Thunnus atlanticus) - Reef Fish
- Blue Flying Fish (Exocoetus volitans) - Reef Fish
- loggerhead turtle (Caretta caretta)
- Stripy (Katsuwonus pelamis) - Reef Fish
- Hawksbill Turtle (Eretmochelys imbricata)
- Fourwing Flyingfish (Hirundichthys affinis) - Reef Fish
- Sperm Whale (Physeter macrocephalus) - Whales & Dolphins
- Atlantic Bluefin Tuna (Thunnus thynnus) - Reef Fish
- Blue Marlin (Makaira nigricans) - Reef Fish
Recommended Packing List for Manana Island
Based on average water temperature of 27.2°C, currents 9 cm/s.
- Shorty or Rashguard - warm 27°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