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Koh Mat Wai Yai เกาะมัดหวายใหญ่

Located in the Gulf of Thailand, this dive site is situated within the Mu Koh Chumphon National Park area. Although divers cannot access the island due to a business concession for collecting bird nests, there is an abundance of marine life to explore underwater.

Divers of all levels, including beginners, advanced, and experts, can enjoy the diverse array of marine species that inhabit these waters. You can expect to encounter the enchanting sea​​horses, pipe fish, razor fish, barracuda, butterfly fish, angel fish, goby, sea turtles, and squid. With a visibility of 5m and a maximum depth of 8m, the underwater experience is optimal for observing and capturing the beauty of this marine ecosystem.

Furthermore, the community actively participates in marine resource conservation activities, creating a sustainable environment for divers to enjoy. Regular volunteer diving activities take place, providing opportunities for individuals to contribute to the preservation of this underwater paradise.

Experience the love for the sea symbolized by the captivating fish that call this dive site home. Dive into the Gulf of Thailand and explore the wonders that await you beneath the surface.

Diving Conditions Score for Koh Mat Wai Yai เกาะมัดหวายใหญ่

7.6
Good

Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Koh Mat Wai Yai เกาะมัดหวายใหญ่

Depth

8m

Visibility

5m

Experience Level

beginner
advanced
expert

Weather Conditions for Koh Mat Wai Yai เกาะมัดหวายใหญ่

Wave Height

0.04m

Wind Speed

10.8 m/s

Water Temp

31.2°C

Visibility

20.62km

Cloud Cover

100%

Wave Period

2.95s

Air Temperature

29.5°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Koh Mat Wai Yai เกาะมัดหวายใหญ่
Alpha

Dive Score Chart for Koh Mat Wai Yai เกาะมัดหวายใหญ่

Best time to dive: 13:00 with score 9.024756462585033/10. Water conditions: Waves 0.04m, Wind 2.6 m/s.Best night dive time: 1:00 with score 8.308945977011494/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Koh Mat Wai Yai เกาะมัดหวายใหญ่: 06:00
Sunset at Koh Mat Wai Yai เกาะมัดหวายใหญ่: 18:00

Optimal diving conditions at Koh Mat Wai Yai เกาะมัดหวายใหญ่ 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.

🌞
Best Overall
13:00

Score: 9.0/10
Waves: 0.04m (2.45s), Wind: 2.6 m/s

🌙
Best Night
1:00

Score: 8.3/10
Waves: 0.04m, Wind: 4.9 m/s

Seasonal Analysis for Koh Mat Wai Yai เกาะมัดหวายใหญ่
Alpha

Historical patterns and best seasons for diving at Koh Mat Wai Yai เกาะมัดหวายใหญ่

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 Mat Wai Yai เกาะมัดหวายใหญ่

Winter

Avg. Score: 10.0/10

Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.

Best Months for Koh Mat Wai Yai เกาะมัดหวายใหญ่

January
Score: 10.0
February
Score: 10.0
March
Score: 10.0

Ideal Conditions for Koh Mat Wai Yai เกาะมัดหวายใหญ่

Water Temp

Thermometer Emoji

27.2°C / 81.0°F

June

Visibility

Telescope Emoji

13.1m / 43.0ft

April

Wave Height

Wave Emoji

1.2m / 3.9ft

March

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Koh Mat Wai Yai เกาะมัดหวายใหญ่

Koh Mat Wai Yai เกาะมัดหวายใหญ่ shows typical northern hemisphere patterns with June being the warmest month (27.2°C) and December the coldest (21.9°C). The calmest conditions typically occur in March with average wave heights of 1.2m 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.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

Last updated: 1 min. ago - Jun 20, 2026

Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.

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