Castaway Island
Located at Castaway (Hombupeka) Island in the beautiful Solomon Islands, this dive site serves as an ideal confined water training spot. With its gentle sandy slope and scattered small reefs, divers can enjoy a leisurely exploration. Situated just two minutes away from the dive shop, it offers easy accessibility. The maximum depth of this site is 5m, making it suitable for beginners.
What sets this site apart is its abundance of captivating macro critters. Divers will encounter an array of fascinating marine life, including tiny nudibranchs, flounder, pipefish, and the occasional Banded Sea Krait. The visibility here is excellent, reaching up to 15m.
For those looking to embark on an unforgettable diving experience in the Western Solomon Islands, this dive site at Castaway Island is not to be missed. Whether you are a novice or experienced diver, the stunning underwater world awaits you.
What sets this site apart is its abundance of captivating macro critters. Divers will encounter an array of fascinating marine life, including tiny nudibranchs, flounder, pipefish, and the occasional Banded Sea Krait. The visibility here is excellent, reaching up to 15m.
For those looking to embark on an unforgettable diving experience in the Western Solomon Islands, this dive site at Castaway Island is not to be missed. Whether you are a novice or experienced diver, the stunning underwater world awaits you.
Diving Conditions Score for Castaway Island
7.5
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Castaway Island
Depth
15m
Visibility
15m
Experience Level
beginner
Weather Conditions for Castaway Island
Wave Height
0.72m
Wind Speed
4.8 m/s
Water Temp
28.9°C
Visibility
3.62km
Cloud Cover
97%
Wave Period
6.8s
Air Temperature
23.7°C
Precipitation
0.2 mm
Detailed 7-Day Diving Forecast for Castaway Island
Alpha
Dive Score Chart for Castaway Island
Best time to dive: 7:00 with score 8.02991962174941/10. Water conditions: Waves 0.82m, Wind 4.1 m/s.Best night dive time: 22:00 with score 7.978199513381995/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Castaway Island: 06:00
Sunset at Castaway Island: 18:00
Optimal diving conditions at Castaway Island are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.
Best Overall
7:00Score: 8.0/10
Waves: 0.82m (7.05s), Wind: 4.1 m/s
Safest Overall
13:00Score: 8.0/10
Waves: 0.76m (6.9s), Wind: 3.4 m/s
Best Night
22:00Score: 8.0/10
Waves: 0.68m, Wind: 6.9 m/s
Seasonal Analysis for Castaway IslandAlpha
Historical patterns and best seasons for diving at Castaway Island
The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.
Monthly Dive Score Analysis - Seasonal Diving Conditions
Higher values indicate better diving conditions
Seasonal DiveScore Chart
This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.
Higher values indicate better diving conditions
Best Season for Castaway Island
Summer
Avg. Score: 10.0/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Castaway Island
May
Score: 10.0
June
Score: 10.0
July
Score: 10.0
Ideal Conditions for Castaway Island
Water Temp
20.8°C / 69.4°F
June
Visibility
20.1m / 65.9ft
May
Wave Height
0.2m / 0.7ft
January
Wave Period
8.0s
January
Seasonal Insights for Castaway Island
Castaway Island follows southern hemisphere patterns with June being the warmest month (20.8°C) and December the coldest (16.8°C). The calmest conditions typically occur in January with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in January with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.
Last updated: 1 min. ago - Jun 22, 2026
Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.
40 Dive sites near Castaway Island in
Mitsubishi A6M Zero (Wreck)
Dream Island
Marlon’s Crack
Mbigo Mbigo
Koviki Corsair (Wreck)
Lola Island
Lighthouse Point
Kuabs
F4F Wildcat and Alice in Wonderland (Wreck)
Kashi Maru (Wreck)
Munda Bar
Patu Gogo
Top Shelf
Blue Pyjamas
Mitsubishi G3M ’Nell’ (Wreck)
Barry’s Breakfast
Susu Hite
Vought F4U Corsair (Wreck)
The Pond
Castaway Island
Munda
Aichi D3A ’Val’ (Wreck)
Eagle’s Nest
Secret Spot
Sasavele Dump Site
Abyss’ Triggerfish
Lumbaria Island
Bilikiki
Bell P39 Airacobra (Wreck)
Nusa Roviana Wall
Rainbow Wall
Douglas SBD Dauntless (Wreck)
Coral Corner
Heron’s Wall
Tombatuni Point
Aussie Point
Cave of the Kastom Shark
Langarana
Mbelo Mbelo
Haipe Reef
Got feedback?
Help us improve this dive site by giving us feedback.