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Racha Noi, Phuket in Thailand

Located just one and a half hours south of Phuket by diving boat, Racha Noi Island is a must-visit dive site for divers in Thailand. Discover the thrill of diving on the west side of the island during the dry season from November to April, or explore the eastern side during the rainy season from May to October. This popular destination is known for its frequent manta ray sightings, making it a dream come true for divers hoping to encounter these magnificent creatures.

Marina Bay on the west side and South Tip on the south are the best spots to catch a glimpse of majestic manta rays. If you're seeking an adrenaline rush, explore the relatively deep dive sites on the east side of the island, where you may be lucky enough to spot thrilling trough sharks. For those who prefer a more tranquil experience, the shallow coral reefs boast a vibrant array of damselfish and tropical fish.

With a visibility of 17m and a maximum depth of 18m, Racha Noi Island offers a diverse range of diving experiences suitable for divers of all levels. Whether you're a beginner, advanced, or expert diver, this captivating dive site promises unforgettable underwater adventures.

Plan your diving excursion to Racha Noi Island and immerse yourself in the beauty of Thailand's Phuket Province. This underwater paradise awaits, ready to enchant divers with its mesmerizing marine life and breathtaking underwater landscapes.

Diving Conditions Score for Racha Noi, Phuket in Thailand

7.4
Good

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

Dive Site Overview for Racha Noi, Phuket in Thailand

Depth

18m

Visibility

17m

Experience Level

beginner
advanced
expert

Weather Conditions for Racha Noi, Phuket in Thailand

Wave Height

0.6m

Wind Speed

20.7 m/s

Water Temp

30.7°C

Visibility

13km

Cloud Cover

60%

Wave Period

6.7s

Air Temperature

27.5°C

Precipitation

0.2 mm

Detailed 7-Day Diving Forecast for Racha Noi
Alpha

Dive Score Chart for Racha Noi

Best time to dive: 17:00 with score 8.235578294573644/10. Water conditions: Waves 0.6m, Wind 10.9 m/s.Best night dive time: 3:00 with score 7.835636643026006/10.

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

Sunrise at Racha Noi: 06:00
Sunset at Racha Noi: 18:00

Optimal diving conditions at 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: 8.2/10
Waves: 0.6m (6.45s), Wind: 10.9 m/s

🌙
Best Night
3:00

Score: 7.8/10
Waves: 0.58m, Wind: 17.5 m/s

Seasonal Analysis for Racha Noi, Phuket in Thailand
Alpha

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

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

Ideal Conditions for Racha Noi, Phuket in Thailand

Water Temp

Thermometer Emoji

26.8°C / 80.2°F

April

Visibility

Telescope Emoji

10.4m / 34.1ft

January

Wave Height

Wave Emoji

2.0m / 6.6ft

March

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Racha Noi, Phuket in Thailand

Racha Noi, Phuket in Thailand shows typical northern hemisphere patterns with May being the warmest month (27.9°C) and December the coldest (22.5°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.

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 Racha Noi is Phuket

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