Diving in Iron Bottom Sound

Explore 84 dive sites in Iron Bottom Sound, Solomon Islands. Ocean conditions, marine species, and dive centres.

Best Time to Dive in Iron Bottom Sound

The warmest water temperatures in Iron Bottom Sound occur in January, averaging 30.5°C. The coolest conditions are in December at 30.5°C.

Monthly Water Temperatures

  • January: 30.5°C (air: 26.9°C)
  • February: 30.5°C (air: 26.7°C)
  • March: 30.5°C (air: 26.7°C)
  • April: 30.5°C (air: 26.8°C)
  • May: 30.5°C (air: 26.9°C)
  • June: 30.5°C (air: 26.5°C)
  • July: 30.5°C (air: 26.5°C)
  • August: 30.5°C (air: 26.3°C)
  • September: 30.5°C (air: 26.5°C)
  • October: 30.5°C (air: 26.7°C)
  • November: 30.5°C (air: 26.7°C)
  • December: 30.5°C (air: 26.9°C)

Marine Life in Iron Bottom Sound

Home to 415 recorded species including 320 reef fish, 29 hard corals, 18 sea snails & nudibranchs, 16 sea cucumbers, 7 seagrass & algae, 5 clams & mussels.

Recommended Packing List for Iron Bottom Sound

Based on average water temperature of 30.5°C.

  • Shorty or Rashguard - warm 30°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

Marine Protected Areas in Iron Bottom Sound

  • Arnavon Islands - Community Conserved Area (IUCN Category VI)
  • Barivuto - Marine Protected Area (IUCN Category Not Reported)
  • Nusa Roviana - Marine Managed Area (IUCN Category Not Assigned)
  • Nazareti - Marine Managed Area (IUCN Category Not Assigned)
  • Barasipo - Marine Managed Area (IUCN Category Not Assigned)
  • Kekehe - Marine Managed Area (IUCN Category Not Assigned)
  • Baraulu/Bule Lavata - Marine Managed Area (IUCN Category Not Assigned)
  • Beta / Kandilae - Kindu - Marine Managed Area (IUCN Category Not Assigned)
  • Kozou - Zone 1 - Marine Managed Area (IUCN Category Not Assigned)
  • Nusa Hope/Heloro - Marine Managed Area (IUCN Category Not Assigned)
  • Ha'apai - Marine Managed Area (IUCN Category Not Assigned)
  • Kida - Marine Managed Area (IUCN Category Not Assigned)
  • Kinamara - Marine Managed Area (IUCN Category Not Assigned)
  • Olive - Marine Managed Area (IUCN Category Not Assigned)
  • Saika - Marine Managed Area (IUCN Category Not Assigned)
  • Buni - Marine Managed Area (IUCN Category Not Assigned)
  • Dunde - Marine Managed Area (IUCN Category Not Assigned)
  • Iriri Pasapasa - Marine Protected Area (IUCN Category Not Reported)
  • Tetepare - Marine Protected Area (IUCN Category Not Assigned)
  • Tetepare - Community Conserved Area (IUCN Category Not Assigned)
  • Duduli Rereghana - Marine Managed Area (IUCN Category Not Assigned)
  • Nusa Hope (Mangrove) - Marine Managed Area (IUCN Category Not Assigned)
  • Niumala - Marine Managed Area (IUCN Category Not Assigned)
  • Lodu Hokata - Marine Protected Area (IUCN Category Not Reported)
  • Dunde (Shark Point) - Marine Protected Area/Tabu (IUCN Category Not Assigned)
  • Karikasi Reef - Marine Protected Area (IUCN Category Not Reported)
  • Alale, Grant Island - Marine Managed Area (IUCN Category Not Assigned)
  • Bakiha Reef - Marine Protected Area (IUCN Category Not Reported)
  • Kia - Marine Managed Area (IUCN Category Not Reported)
  • Komarindi - Conservation Area (IUCN Category V)
  • Pipa/Kororo (Marovo) - Marine Protected Area/Tabu (IUCN Category Not Reported)
  • Rendova Harbor - Marine Protected Area/Tabu (IUCN Category Not Reported)
  • Opele - Marine Protected Area/Tabu (IUCN Category Not Reported)
  • Tobo - Marine Protected Area/Tabu (IUCN Category Not Reported)
  • Sasavele/NB - Marine Protected Area/Tabu (IUCN Category Not Reported)
  • Koqu Rua - Marine Protected Area (IUCN Category Not Reported)
  • Maravaghi - Marine Protected Area/Tabu (IUCN Category Not Assigned)
  • Salavo - Marine Protected Area/Tabu (IUCN Category Not Assigned)
  • Sisili - Marine Protected Area/Tabu (IUCN Category Not Assigned)
  • Taburu - Marine Protected Area/Tabu (IUCN Category Not Reported)
  • Tulagi Island - Marine Protected Area/Tabu (IUCN Category Not Reported)
  • Leva Point - Marine Protected Area (IUCN Category Not Reported)
  • Penjapenja Reef - Marine Protected Area (IUCN Category Not Reported)
  • Variparui Island - Marine Protected Area (IUCN Category Not Reported)
  • Vena Island - Marine Protected Area (IUCN Category Not Reported)
  • Petu Island - Marine Protected Area (IUCN Category Not Reported)

Getting to Iron Bottom Sound - Nearest Airports

  • Honiara International Airport (HIR), Honiara - 160 km away, approx 189 min travel time
  • Munda Airport (MUA), Munda - 178 km away, approx 209 min travel time

Dive Sites

Dive Centres

Frequently Asked Questions

What are the typical diving conditions like in Iron Bottom Sound, including visibility and water temperature?
Diving in Iron Bottom Sound offers consistently warm waters, with the best months seeing temperatures around 30.47°C. While specific visibility data isn't provided, the numerous WWII wrecks are known to host thriving marine ecosystems. Divers can expect comfortable conditions for exploring these historical sites.
What kind of marine life can divers expect to see on the wrecks and reefs of Iron Bottom Sound?
Divers exploring the Iron Bottom Sound can expect to encounter thriving marine ecosystems, particularly on the numerous WWII wrecks that dot the seabed. These historical sites, along with natural reefs like Pilena Reef and Twin Tunnels Reef, provide diverse habitats for a variety of marine life. While specific species are not detailed, the region is renowned for its rich biodiversity.
Which are considered the best or most popular dive sites for wreck diving in Iron Bottom Sound?
Iron Bottom Sound is famous for its extensive collection of WWII wrecks. Popular wreck dive sites include the USS Kanawa (Wreck), the Mitsubishi G3M ’Nell’ (Wreck), and the HMNZS Moa (Wreck). Divers can also explore various aircraft wrecks like the Aichi D3A ’Val’ (Wreck) and the Bell P39 Airacobra (Wreck), offering a diverse range of historical underwater exploration.
What are the recommended experience levels or certifications needed for diving in Iron Bottom Sound, especially for wreck dives?
Based on the available data, all listed dive sites in Iron Bottom Sound are classified as 'intermediate' in terms of experience level. This suggests that divers should have a good level of training and comfort in various diving conditions. While specific certifications are not detailed, divers planning to explore the numerous WWII wrecks should ideally possess appropriate wreck diving experience or certifications.
How do divers typically get to Iron Bottom Sound and what are the main access points?
While the specific access points for Iron Bottom Sound are not detailed in the provided information, the presence of four dive centres in the area indicates established local operations. Divers typically arrange their trips through these local operators, who facilitate access to the numerous dive sites. These centres likely provide boat access to the wrecks and reefs near Guadalcanal.
Are there specific seasonal variations or a best time of year to dive in Iron Bottom Sound?
The best time of year to dive in Iron Bottom Sound, particularly for optimal water temperatures, is during Month 1, Month 2, and Month 3. During these months, divers can enjoy consistently warm waters averaging 30.47°C. While other seasonal variations are not specified, these months offer ideal conditions for comfortable diving.
Are there any shallow wreck dives in Iron Bottom Sound suitable for recreational or less experienced divers?
Based on the provided data for Iron Bottom Sound, all listed dive sites, including the numerous wreck dives, are categorized as 'intermediate' in difficulty. There is no specific mention of shallow wreck dives suitable for recreational or less experienced divers. Divers should be prepared for intermediate-level conditions when exploring the historical wrecks of the area.
Beyond the historical wrecks, what other types of underwater topography or natural reefs can be explored in Iron Bottom Sound?
Beyond its famous historical wrecks, Iron Bottom Sound offers a diverse range of underwater topography and natural reefs for exploration. Divers can explore vibrant reef sites such as Pilena Reef, Twin Tunnels Reef, and Coral Corner, or venture into unique cave systems like the Cave of the Kastom Shark and Ed’s Wall. The region also features specialized sites like Base 1 Muck Site for macro enthusiasts and drift dives at Secret Spot.