The Bay, Koh Bon, Koh Similan in Thailand
One notable feature of Bon Island is its long and narrow ridge point on the west side. As you explore the depths, a breathtaking landscape of hard corals adorns the walls, creating a picturesque backdrop for your dive. This underwater paradise is inhabited by a diverse range of marine life, including nudibranches, octopus, morays, and even occasional sightings of manta rays and the majestic whale shark near the bay.
With a visibility of 18m and a maximum depth of 22m, Bon Island is an ideal destination for beginner divers looking to embark on an unforgettable exploration of Thailand's underwater treasures. Whether you are an experienced diver or a novice just starting your underwater journey, this dive site guarantees an immersive experience in the heart of Southeast Asia's marine wonderland.
Plan your dive at Bon Island, Thailand, and immerse yourself in the awe-inspiring beauty of its underwater world.
Diving Conditions Score for The Bay, Koh Bon, Koh Similan in Thailand
Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for The Bay, Koh Bon, Koh Similan in Thailand
Depth
22m
Visibility
18m
Experience Level
Weather Conditions for The Bay, Koh Bon, Koh Similan in Thailand
Wave Height
0.64m
Wind Speed
12.5 m/s
Water Temp
30.4°C
Visibility
9.78km
Cloud Cover
96%
Wave Period
7.1s
Air Temperature
27.2°C
Precipitation
0.2 mm
Dive Score Chart for The Bay, Koh Bon
Best time to dive: 14:00 with score 8.378804219409282/10. Water conditions: Waves 0.6m, Wind 8.6 m/s.Best night dive time: 19:00 with score 7.7720061728395065/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at The Bay, Koh Bon 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.
Score: 8.4/10
Waves: 0.6m (7.9s), Wind: 8.6 m/s
Score: 8.3/10
Waves: 0.62m (7.2s), Wind: 7.3 m/s
Score: 7.8/10
Waves: 0.6m, Wind: 14 m/s
Seasonal Analysis for The Bay, Koh Bon, Koh Similan in ThailandAlpha
Historical patterns and best seasons for diving at The Bay, Koh Bon, Koh Similan in Thailand
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 The Bay, Koh Bon, Koh Similan in Thailand
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for The Bay, Koh Bon, Koh Similan in Thailand
Ideal Conditions for The Bay, Koh Bon, Koh Similan in Thailand
Water Temp
27.0°C / 80.6°F
August
Visibility
10.7m / 35.1ft
December
Wave Height
1.6m / 5.2ft
March
Wave Period
8.0s
January
Seasonal Insights for The Bay, Koh Bon, Koh Similan in Thailand
The Bay, Koh Bon, Koh Similan in Thailand shows typical northern hemisphere patterns with May being the warmest month (28.2°C) and December the coldest (23.2°C). The calmest conditions typically occur in March with average wave heights of 1.6m and wave periods of 8.0s. The most comfortable wave conditions are in March 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 0.1mm of precipitation. For beginners, the best time to visit would be during March to May, 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 21, 2026