Jansom Bay, Koh Tao in Thailand
The underwater landscape at Jansom Bay is truly captivating. The sandy bottom is teeming with life, with numerous gobies finding their home amidst the vibrant and healthy coral. The coral formations resemble a breathtaking Japanese garden, showcasing a diverse array of corals. The marine life is abundant, adding an enchanting element to the diving experience.
With a maximum depth of 7 meters and a visibility of 10 meters, Jansom Bay is an ideal dive site for divers of all levels, including beginners. Whether you are just starting your diving journey or an experienced diver, this site offers something for everyone. As you venture east from the beach at Nan Yuan, the depth gradually deepens, and heading north allows for thrilling wall diving and the opportunity for macro observations along the island.
If you are planning a dive trip to Jansom Bay, it is conveniently located near Songserm Road in Baan Mae Haad, Surat Thani Province. The entrance fee to the dive site is 200 bahts.
Immerse yourself in the beauty of Jansom Bay dive site and discover the wonders that lie beneath the surface. Experience the tranquility and vibrant marine life that make this diving destination in Thailand truly remarkable.
Diving Conditions Score for Jansom Bay, Koh Tao in Thailand
Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Jansom Bay, Koh Tao in Thailand
Depth
7m
Visibility
10m
Experience Level
Weather Conditions for Jansom Bay, Koh Tao in Thailand
Wave Height
0.26m
Wind Speed
16.2 m/s
Water Temp
30.6°C
Visibility
18.48km
Cloud Cover
43%
Wave Period
2.35s
Air Temperature
28.4°C
Precipitation
0.5 mm
Dive Score Chart for Jansom Bay
Best time to dive: 7:00 with score 8.267190909090909/10. Water conditions: Waves 0.14m, Wind 7.2 m/s.Best night dive time: 5:00 with score 7.511732624113476/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Jansom Bay 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: 8.3/10
Waves: 0.14m (2.2s), Wind: 7.2 m/s
Score: 7.5/10
Waves: 0.16m, Wind: 16.5 m/s
Seasonal Analysis for Jansom Bay, Koh Tao in ThailandAlpha
Historical patterns and best seasons for diving at Jansom Bay, Koh Tao 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 Jansom Bay, Koh Tao in Thailand
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Jansom Bay, Koh Tao in Thailand
Ideal Conditions for Jansom Bay, Koh Tao in Thailand
Water Temp
27.2°C / 81.0°F
August
Visibility
11.2m / 36.7ft
March
Wave Height
1.7m / 5.6ft
March
Wave Period
8.0s
January
Seasonal Insights for Jansom Bay, Koh Tao in Thailand
Jansom Bay, Koh Tao in Thailand shows typical northern hemisphere patterns with June being the warmest month (28.3°C) and December the coldest (23.0°C). The calmest conditions typically occur in March with average wave heights of 1.7m 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 0.2mm 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