Koh Sak
For beginner divers, the sight of vibrant reef fish can be quite exhilarating. Meanwhile, for more experienced divers seeking a challenge, there are plenty of crustaceans and colorful nudibranches to discover. And as you venture deeper into the depths, keep an eye out for the elusive pipefish.
With a visibility of around 5m and a maximum depth of 11m, this dive site offers an ideal experience for beginners. Located in the Gulf of Thailand, Sak Island should definitely be on your diving bucket list. So gear up, get ready to explore, and immerse yourself in the wonders of this captivating underwater world.
[Link to dive site page or relevant information]
Diving Conditions Score for Koh Sak
Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Koh Sak
Depth
11m
Visibility
5m
Experience Level
Weather Conditions for Koh Sak
Wave Height
0.48m
Wind Speed
21.7 m/s
Water Temp
30.6°C
Visibility
37km
Cloud Cover
100%
Wave Period
3.15s
Air Temperature
29.7°C
Precipitation
0 mm
Dive Score Chart for Koh Sak
Best time to dive: 15:00 with score 7.830333333333334/10. Water conditions: Waves 0.58m, Wind 27.6 m/s.Best night dive time: 22:00 with score 7.3411333333333335/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Koh Sak 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: 7.8/10
Waves: 0.58m (3.4s), Wind: 27.6 m/s
Score: 7.3/10
Waves: 0.62m, Wind: 23.5 m/s
Seasonal Analysis for Koh SakAlpha
Historical patterns and best seasons for diving at Koh Sak
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 Koh Sak
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Koh Sak
Ideal Conditions for Koh Sak
Water Temp
27.4°C / 81.3°F
August
Visibility
11.9m / 39.0ft
November
Wave Height
1.8m / 5.9ft
November
Wave Period
8.0s
January
Seasonal Insights for Koh Sak
Koh Sak shows typical northern hemisphere patterns with June being the warmest month (29.0°C) and December the coldest (22.6°C). The calmest conditions typically occur in November with average wave heights of 1.8m and wave periods of 8.0s. The most comfortable wave conditions are in November 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 November to January, 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