Scuba Diving at Koh Ma

Diving atKoh Ma (Thailand)

Koh Ma presents itself as a dynamic dive location, characterized by its dramatic shelving bottom. Divers explore a transition from vibrant shallow coral reefs to deeper formations of black and soft corals. Access to the site is flexible, allowing for both boat and shore entries, while the dive reaches a maximum depth of 25 m (82 ft).

Tonight's objective overview for Koh Ma shows an air temperature of 29.1°C. The measured surface conditions include wave heights around 0.3m. This environmental data is logged for the close of the day.

Dive Site Coordinates

9.8008, 99.9769

Dive Site Characteristics

Beach

Key Dive Site Facts

Max Depth25m / 82ft
Entry TypeBoat, Shore
Water Typesalt
Dive TypesReef, Wall

Dive Site Overview

Koh Ma's underwater topography accommodates a wide range of diving proficiencies. Starting from its adjacent island, the seabed gradually shelves downwards, creating a seamless transition from vibrant, sunlit shallow coral gardens to more profound zones.

Deeper areas reveal intriguing formations of black and soft corals, extending to a maximum depth of 25 m (82 ft). Extensive reef systems and engaging wall sections provide varied exploration opportunities. Dive locations are flexibly accessed, supporting both boat-based excursions and shore entries, depending on the specific dive plan and logistical considerations.

Adaptability allows different groups to tailor their experience. For those just beginning, PADI Discover Scuba Diving experiences are readily available in the shallower, protected areas.

Certified PADI Open Water Divers will find ample scope for exploration within the upper and mid-depth ranges, where reef fish are abundant.

However, to fully engage with the site's entire structure, particularly its deeper coral formations and wall elements, PADI Advanced Open Water Diver certification is recommended. A rich population of various reef fish thrives in the marine environment, and divers often report encounters with sizable brown-marbled groupers. Occasional sightings of pelagic species add another layer of excitement to these dives.

Best Time to Dive

Planning a dive at Koh Ma benefits from understanding seasonal shifts, with conditions varying between good and excellent scores throughout the year. February to May, along with October, typically offers excellent diving. During these months, air temperatures remain comfortably warm, averaging between 27.5°C (81.5°F) and 29.7°C (85.5°F), with significantly lower rainfall (e.g., April sees only about 1.62 mm). Wave heights are generally minimal, often around 0.27 to 0.45 meters, contributing to clearer conditions. Conversely, months like November, while still rated as good for diving, experience higher average rainfall, reaching around 9.94 mm, and slightly larger wave heights of about 0.60 meters. Even in these rainier periods, air temperatures stay within a pleasant 26.9°C to 28.9°C (80.4°F to 84.0°F) range, maintaining tropical warmth.

Jan: GoodScore: 8/10
Feb: ExcellentScore: 9/10
Mar: ExcellentScore: 9/10
Apr: ExcellentScore: 9/10
May: ExcellentScore: 9/10
Jun: GoodScore: 8/10
Jul: GoodScore: 8/10
Aug: GoodScore: 8/10
Sep: GoodScore: 8/10
Oct: ExcellentScore: 9/10
Nov: GoodScore: 7/10
Dec: GoodScore: 8/10
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Excellent
Good
Moderate
Poor
Unsafe

Climate Historical Averages

Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.

Month
Air Temp
Max Waves
Wind Speed
Rain
January27°C0.6m19 km/h1.3 mm
February28°C0.5m18 km/h2.2 mm
March28°C0.4m18 km/h1.0 mm
April30°C0.3m16 km/h1.6 mm
May29°C0.3m18 km/h4.4 mm
June29°C0.4m22 km/h3.2 mm
July29°C0.5m23 km/h5.3 mm
August28°C0.4m22 km/h4.3 mm
September28°C0.5m23 km/h5.4 mm
October28°C0.3m17 km/h9.0 mm
November27°C0.6m20 km/h9.9 mm
December27°C0.6m20 km/h5.9 mm

Dive Experience & Conditions

Underwater, Koh Ma's profile transitions from an easily accessible shallow reef to a more complex, deeper environment. Initial sections near the island feature vibrant coral reefs, gradually sloping downwards. As divers descend, coral types shift, introducing formations of black and soft corals that add textural diversity to the landscape. While specific water temperatures aren't consistently reported, typical tropical conditions mean warm waters generally prevail, allowing for comfortable diving without heavy thermal protection. Maximum depth reaches 25 meters. Varied terrain, from sandy slopes to more vertical wall elements, provides interest for divers keen on exploring different underwater structures.

Dive Difficulty & Safety Guidelines

Approaching any dive requires adherence to safe diving practices, and Koh Ma is no exception. Given the maximum depth of 25 meters (82 feet), divers should ensure their certification level aligns with their intended dive profile; Advanced Open Water certification is beneficial for exploring the full extent of the site. It's always prudent to consult with local dive professionals before entering the water, as they provide the most current information on conditions like currents and visibility. While no specific hazards are consistently reported for Koh Ma, standard situational awareness and buddy system protocols are essential. Planning your gas consumption carefully, especially when exploring deeper wall sections, ensures a safe and enjoyable experience.

Recommended Equipment

No verified equipment items yet.

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Verified equipment recommendations for this dive site are being reviewed and may be added as additional source checks are completed.

Recommended Dive Suit

Dive skin or rash guard is widely used for recreational dives in waters of this temperature. Water conditions at Koh Ma are currently measured at approximately 32°C (89°F). Surface air temperatures are resting at 29°C (84°F).

Forecast models show minimal temperature variation in the coming days.

Water temperatures can occasionally shift throughout the day depending on currents and depth layers.

Conditions last reviewed: 18:00 using the latest environmental data.

Dive Logistics & Preparation

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Hyperbaric Chamber

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Entry Requirements

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Currency

THB

Nearest Airports

Nearest airports to help plan travel to this dive area.

✈️Samui International AirportUSM
30 km
✈️Surat Thani AirportURT
118 km
✈️Chumphon AirportCJM
121 km

Marine Life at Koh Ma

Marine life at Koh Ma immediately impresses with its resident reef fish population, active across the coral formations. Divers frequently observe a good range of these colorful species. Large brown-marbled groupers are also a notable presence, often seen occupying crevices or moving along the shelving bottom. Occasional encounters with passing pelagics add an element of excitement. Additionally, wider reports suggest common sightings of sharks, whales, dolphins, and turtles in the general vicinity, though specific sightings are always subject to natural variability.

Dive Centers Near Koh Ma

The Life Aquatic

The Life Aquatic

Thailand27.8 km away

Unverified 5
Aloha Diving

Aloha Diving

Thailand31 km away

Unverified 5
Discovery Divers

Discovery Divers

Thailand31 km away

Unverified 4.8
Koh Chang Divers

Koh Chang Divers

Thailand33.8 km away

Unverified 4.9

Frequently Asked Questions

What is the maximum depth at Koh Ma?

Koh Ma is accessible to a maximum depth of 25 meters. This range offers divers ample opportunity for underwater exploration, from shallow reefs to deeper coral and wall sections.

What kind of marine life can I expect to see?

You can expect to encounter a variety of reef fish and potentially large brown-marbled groupers. There are also reports of passing pelagics, and common sightings of sharks, whales, dolphins, and turtles.

What dive certifications are recommended for Koh Ma?

PADI Open Water Diver certification is suitable for much of the site. To fully explore the deeper sections, including the black and soft corals at max depth, a PADI Advanced Open Water Diver certification is recommended. PADI Discover Scuba Diving experiences are also an option for beginners.

How do divers access the Koh Ma dive site?

Divers have flexible access options at Koh Ma. Entry can be made either by boat, typically arranged through local dive operators, or directly from the shore, depending on the specific dive plan and entry point.

Are there different dive environments at Koh Ma?

Koh Ma features a shelving bottom, transitioning from vibrant shallow coral reefs to deeper areas with black and soft corals, along with some wall sections.

Is Koh Ma suitable for beginner divers?

Yes, Koh Ma is suitable for beginners through options like PADI Discover Scuba Diving experiences. PADI Open Water Divers can also enjoy much of the site's shallower areas.

What are the water temperatures like at Koh Ma?

Specific water temperatures aren't consistently reported, but Koh Ma is in a tropical region. Divers should anticipate warm, comfortable waters typical of tropical Southeast Asia throughout the year.

Liveaboards Sailing to Koh Ma

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Resorts & Accommodation

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