Koh Rangka Chio / เกาะรังกาจิว
Chumphon is renowned for its thriving seagrass meadows teeming with marine life, including majestic sea turtles and vibrant butterfly fish. It serves as a vital spawning ground for sea turtles, further emphasizing its ecological significance. In addition, there is an island within the park that houses a turtle hatching station, overseen by dedicated caretakers.
Divers of all levels, including beginners, can explore the underwater wonders of Mu Ko Chumphon National Park No. 1. With a visibility of 9 meters and a maximum depth of 13 meters, this dive site offers a memorable experience for those seeking to discover the beauty of the ocean. Kayaking is also available for those who prefer to explore the surface of the water.
Plan your dive at Mu Ko Chumphon National Park No. 1 and immerse yourself in the enchanting underwater world of Chumphon.
Diving Conditions Score for Koh Rangka Chio / เกาะรังกาจิว
Average conditions, be alert.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Koh Rangka Chio / เกาะรังกาจิว
Depth
13m
Visibility
9m
Experience Level
Weather Conditions for Koh Rangka Chio / เกาะรังกาจิว
Wave Height
0.16m
Wind Speed
13.7 m/s
Water Temp
31.2°C
Visibility
1.08km
Cloud Cover
39%
Wave Period
1.7s
Air Temperature
32.5°C
Precipitation
0 mm
Dive Score Chart for Koh Rangka Chio / เกาะรังกาจิว
Best time to dive: 17:00 with score 7.327956097560976/10. Water conditions: Waves 0.12m, Wind 10 m/s.Best night dive time: 22:00 with score 7.2526717948717945/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Koh Rangka Chio / เกาะรังกาจิว 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: 7.3/10
Waves: 0.12m (2.05s), Wind: 10 m/s
Score: 7.3/10
Waves: 0.06m, Wind: 6.5 m/s
Seasonal Analysis for Koh Rangka Chio / เกาะรังกาจิวAlpha
Historical patterns and best seasons for diving at Koh Rangka Chio / เกาะรังกาจิว
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 Rangka Chio / เกาะรังกาจิว
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Koh Rangka Chio / เกาะรังกาจิว
Ideal Conditions for Koh Rangka Chio / เกาะรังกาจิว
Water Temp
27.1°C / 80.8°F
April
Visibility
12.6m / 41.3ft
March
Wave Height
1.3m / 4.3ft
March
Wave Period
8.0s
January
Seasonal Insights for Koh Rangka Chio / เกาะรังกาจิว
Koh Rangka Chio / เกาะรังกาจิว shows typical northern hemisphere patterns with June being the warmest month (27.4°C) and December the coldest (22.1°C). The calmest conditions typically occur in March with average wave heights of 1.3m 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 0.4mm 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 22, 2026