Iron Bottom Sound, Solomon Islands
    Rendova Harbor

    Rainbow Wall

    Best months: Jul–Oct

    Protected Area

    Rendova Harbor

    Why dive here

    With 391+ marine species recorded in the area - including barracuda, blacktip reef sharks, grey reef sharks, humpback whales and orcas - Rainbow Wall offers some of Iron Bottom Sound's richest wreck diving. Water ranges 29-31°C, warmest January, April, December.

    Best timeJul–Oct
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Blacktip Reef Sharks, Grey Reef Sharks, Humpback Whales and Orcas · 391+ species recorded
    Water29-31°C · warmest January, April, December
    CharacterWreck dive
    StandoutExceptional marine biodiversity

    Rainbow Wall is a bit of a journey out, tucked away near Rendova Island, but it consistently delivers. We love a good wall dive, and this one doesn't disappoint, dropping quickly into the blue. It's a spot for when you're feeling confident, perhaps a bit more advanced in your diving, because the currents can be lively. We’ve hooked in here more than once, just watching the show unfold – big schools of Blue and Gold Fusiliers streaming past, then a sudden flurry of Manini, and the occasional Malabar grouper lurking in the crevices. The real draw here is the open water. Keep an eye out into the blue, because that’s where the action happens. We've seen eagle rays glide by, their shadows passing over us, and it's not uncommon to spot a shark cruising the deeper sections. It’s a site where you spend as much time looking out as you do at the wall itself, which, by the way, is covered in some lovely corals and home to plenty of vibrant Lineated and Latticed Butterflyfish. Visibility averages a solid 22 meters, which helps you appreciate the scale of it all. This is our pick for divers who crave that wide-open ocean feel and aren't afraid of a bit of current to get the best views.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today05:1117:2612h 15m daylightGolden hour 16:58

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    Conditions

    Ocean conditions, forecast and tides for Rainbow Wall

    Rainbow Wall Ocean Conditions

    Monthly averages for Rainbow Wall, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-9.03, 159.16) (58km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    85°F · Range: 28.7–30.5°C

    Air Temperature

    27°C

    80°F

    Wind Speed

    3.74 m/s

    7.3 knots

    Atmospheric Pressure

    1010.5 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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