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
7.3
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
0.98m
Wind Speed
13.8 m/s
Water Temp
28.6°C
Visibility
8.84km
Cloud Cover
93%
Wave Period
8.35s
Air Temperature
24.2°C
Precipitation
0.4 mm
Detailed 7-Day Diving Forecast for Castaway Island
Alpha
Dive Score Chart for Castaway Island
Best time to dive: 12:00 with score 8.185807189542484/10. Water conditions: Waves 0.84m, Wind 6.3 m/s.Best night dive time: 3:00 with score 7.818888888888889/10.
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
12:00Score: 8.2/10
Waves: 0.84m (7.65s), Wind: 6.3 m/s
Best Night
3:00Score: 7.8/10
Waves: 0.86m, Wind: 4.3 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
26.9°C / 80.4°F
May
Visibility
14.0m / 45.9ft
October
Wave Height
1.0m / 3.3ft
December
Wave Period
8.0s
January
Seasonal Insights for Castaway Island
Castaway Island follows southern hemisphere patterns with July being the warmest month (27.1°C) and December the coldest (22.9°C). The calmest conditions typically occur in December with average wave heights of 1.0m and wave periods of 8.0s. The most comfortable wave conditions are in December 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). July is usually the driest month with 1.0mm of precipitation. For beginners, the best time to visit would be during December to February, 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 - Jul 7, 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.
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