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Manta Reef, Racha Noi, Phuket in Thailand

Located just a two-hour boat ride from Phuket Province, Thailand, Racha Noi offers an exquisite dive site known as Manta Reef. This stunning spot on the east coast features a captivating wall dive that reaches depths of approximately 22 meters. Adorned with an array of vibrant corals, the wall provides an enchanting backdrop for divers of all levels.

Alongside the beautifully covered soft corals, divers will discover an abundance of diverse fish species, gracefully moving from the top to the bottom of the wall. For those seeking an unforgettable encounter, Manta rays are often spotted at this distinguished Phuket dive location.

With a maximum depth of 17 meters and impressive visibility of 19 meters, Racha Noi's Manta Reef is an ideal destination for both beginner and advanced divers. Immerse yourself in the breathtaking underwater world of Thailand and explore this captivating dive site today.

Diving Conditions Score for Manta Reef, Racha Noi, Phuket in Thailand

6.5
Above Average

Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Manta Reef, Racha Noi, Phuket in Thailand

Depth

17m

Visibility

19m

Experience Level

beginner
advanced

Weather Conditions for Manta Reef, Racha Noi, Phuket in Thailand

Wave Height

0.74m

Wind Speed

18.3 m/s

Water Temp

30.6°C

Visibility

11.1km

Cloud Cover

64%

Wave Period

5.4s

Air Temperature

29.2°C

Precipitation

0.2 mm

Detailed 7-Day Diving Forecast for Manta Reef, Racha Noi
Alpha

Dive Score Chart for Manta Reef, Racha Noi

Best time to dive: 17:00 with score 7.651224137931034/10. Water conditions: Waves 0.68m, Wind 14.5 m/s.Best night dive time: 20:00 with score 7.260588603988604/10.

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

Sunrise at Manta Reef, Racha Noi: 06:00
Sunset at Manta Reef, Racha Noi: 18:00

Optimal diving conditions at Manta Reef, Racha Noi 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
17:00

Score: 7.7/10
Waves: 0.68m (5.8s), Wind: 14.5 m/s

🌞
Safest Overall
6:00

Score: 7.6/10
Waves: 0.68m (6.45s), Wind: 18.4 m/s

🌙
Best Night
20:00

Score: 7.3/10
Waves: 0.64m, Wind: 16.1 m/s

Seasonal Analysis for Manta Reef, Racha Noi, Phuket in Thailand
Alpha

Historical patterns and best seasons for diving at Manta Reef, Racha Noi, Phuket 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 Manta Reef, Racha Noi, Phuket in Thailand

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 Manta Reef, Racha Noi, Phuket in Thailand

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

Ideal Conditions for Manta Reef, Racha Noi, Phuket in Thailand

Water Temp

Thermometer Emoji

20.8°C / 69.4°F

June

Visibility

Telescope Emoji

20.1m / 65.9ft

May

Wave Height

Wave Emoji

0.2m / 0.7ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Manta Reef, Racha Noi, Phuket in Thailand

Manta Reef, Racha Noi, Phuket in Thailand shows typical northern hemisphere patterns with June being the warmest month (20.8°C) and December the coldest (16.8°C). The calmest conditions typically occur in January with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in January 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 January to March, 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 22, 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.

The closest dive destination to Manta Reef, Racha Noi is Phuket

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