Koh Bida Nok, Krabi in Thailand
Explore the captivating underwater world of Bida Nok dive site, located near Ko Bida Nok in the Krabi Province of Thailand. This renowned dive site is highly cherished by divers due to its exceptional variety of marine wildlife. With its gently sloping reef that descends to depths of 16-24 meters, alongside a striking wall reaching 22-26 meters at the southwest, Bida Nok offers a remarkable experience for divers of all levels.
Delight in encounters with an array of fascinating marine creatures, including majestic Turtles, agile Black Tip reef sharks, Barracuda, and impressive schools of yellow snapper. This vibrant ecosystem is also home to enchanting Nudibranchs, elusive Octopus, intriguing Moray eels, captivating Lion Fish, and speedy Travally. If you're lucky, you might even spot the magnificent Whale-sharks on occasion.
For those who prefer starting their diving adventure towards the north, a shallow dive starting from 5-7 meters is ideal. Here, you can witness the intriguing behavior of the blacktip reef sharks that frequent the northwest corner. Alternatively, explore the stunning wall of coral, meticulously searching the fan corals for delightful Sea Horses and frogfish. As you continue diving, be mesmerized by the mixed garden of stunning hard and soft corals, eventually encountering a captivating swarm of yellow snapper that envelops you as you swim through their midst. Towards the end of the dive, don't forget to observe the shadows cast by overhangs, where small shoals of squid often gather.
Embark on a remarkable underwater journey by starting from the southeast and following the finger reef adorned with beautiful soft corals and vibrant red fan corals. Traverse the reef, then descend along the coral wall and head west. As you explore the deeper side of Bida Nok, be enthralled by the sight of lobsters, nudibranchs, schools of tuna and snapper, as well as the enchanting moray eels and white-eyed morays. Once you reach the main wall on the southwestern corner, choose to continue the dive or double back and ascend to 5-7 meters, always keeping a vigilant eye out for the ever-charismatic blacktip reef sharks.
With a recommended diver level of both beginners and advanced, Bida Nok offers a truly unforgettable diving experience for all. The visibility of 14 meters allows for exceptional clarity throughout the dive, enhancing your chances of witnessing the beauty that abounds beneath the waves. Whether you are a novice or an experienced diver, this remarkable dive site on the paradisiacal island of Ko Bida Nok is a must-visit, deserving of at least two dives to fully immerse yourself in its wonders.
Diving Conditions Score for Koh Bida Nok, Krabi in Thailand
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Koh Bida Nok, Krabi in Thailand
Depth
17m
Visibility
14m
Experience Level
Weather Conditions for Koh Bida Nok, Krabi in Thailand
Wave Height
0.48m
Wind Speed
11.4 m/s
Water Temp
30.9°C
Visibility
5.52km
Cloud Cover
95%
Wave Period
6.2s
Air Temperature
28.6°C
Precipitation
1.6 mm
Dive Score Chart for Koh Bida Nok
Best time to dive: 17:00 with score 7.970909836065574/10. Water conditions: Waves 0.48m, Wind 13.9 m/s.Best night dive time: 21:00 with score 7.609100000000001/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Koh Bida Nok 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: 8.0/10
Waves: 0.48m (6.1s), Wind: 13.9 m/s
Score: 7.9/10
Waves: 0.48m (5.95s), Wind: 18.2 m/s
Score: 7.6/10
Waves: 0.48m, Wind: 13.6 m/s
Seasonal Analysis for Koh Bida Nok, Krabi in ThailandAlpha
Historical patterns and best seasons for diving at Koh Bida Nok, Krabi 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 Koh Bida Nok, Krabi in Thailand
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Koh Bida Nok, Krabi in Thailand
Ideal Conditions for Koh Bida Nok, Krabi in Thailand
Water Temp
27.2°C / 81.0°F
August
Visibility
10.4m / 34.1ft
January
Wave Height
2.0m / 6.6ft
March
Wave Period
8.0s
January
Seasonal Insights for Koh Bida Nok, Krabi in Thailand
Koh Bida Nok, Krabi in Thailand shows typical northern hemisphere patterns with May being the warmest month (28.4°C) and December the coldest (22.8°C). The calmest conditions typically occur in March with average wave heights of 2.0m 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