Skip to content
Go to Dive Champ home pageDive Champ LogoDive Champ

Anitas Reef, Koh Similan in Thailand

Welcome to a serene dive site located on the east side of islands 5 and 6 in the renowned Similan Islands of Thailand. This captivating spot presents a gently rolling reef slope along the island's edge, ranging from a shallow depth of 5 to 6 meters to approximately 25 meters below the surface.

Explore the deep sandy area and witness the vibrant marine life that thrives here. Encounter chinangoes, stingrays, Andaman jawfish, and a variety of symbiotic gobies. Delight in the presence of coral fish, including angelfish and butterflyfish, as well as fascinating macroscopic creatures such as anchovy fish, sperm scorpionfish, and frogfish. The main focal points are adorned with schools of scarlet angelfish, accompanied by schools of bluefin reef fish and pond bonito gracefully swimming nearby.

The picturesque contrast between the pure white sand and the mesmerizing blue sea captivates divers in the deeper regions. In the shallower areas, marvel at the kaleidoscope of colors as you encounter captivating coral formations and an array of coral fish, including yellowfin reef sharks. Prepare to immerse yourself in the tranquil beauty of an idyllic tropical dive experience.

At the heart of this exceptional dive site, you will find a grand boulder rising from 18 meters to within 5 meters of the surface. Adorned with vibrant soft and hard corals, this boulder serves as a haven for a diverse range of species.

With excellent visibility spanning 21 meters and a maximum depth of 21 meters, this dive site is suitable for divers of all levels, including beginners and advanced enthusiasts. Embrace the opportunity to explore this underwater paradise located near Barracuda Point in the stunning Phang-nga Province of Thailand.

Ensure an unforgettable dive experience by immersing yourself in the optimized content of this remarkable dive site.

Diving Conditions Score for Anitas Reef, Koh Similan in Thailand

7.1
Good

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

Dive Site Overview for Anitas Reef, Koh Similan in Thailand

Depth

21m

Visibility

21m

Experience Level

beginner
advanced

Weather Conditions for Anitas Reef, Koh Similan in Thailand

Wave Height

0.82m

Wind Speed

10 m/s

Water Temp

29.9°C

Visibility

15km

Cloud Cover

57.5%

Wave Period

8.45s

Air Temperature

20°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Anitas Reef
Alpha

Dive Score Chart for Anitas Reef

Best time to dive: 6:00 with score 7.843333333333333/10. Water conditions: Waves 0.82m, Wind 10 m/s.Best night dive time: 0:00 with score 7.343333333333333/10.

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

Sunrise at Anitas Reef: 06:00
Sunset at Anitas Reef: 18:00

Optimal diving conditions at Anitas Reef 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
6:00

Score: 7.8/10
Waves: 0.82m (8s), Wind: 10 m/s

🌙
Best Night
0:00

Score: 7.3/10
Waves: 0.82m, Wind: 10 m/s

Seasonal Analysis for Anitas Reef, Koh Similan in Thailand
Alpha

Historical patterns and best seasons for diving at Anitas Reef, Koh Similan 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 Anitas Reef, Koh Similan 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 Anitas Reef, Koh Similan in Thailand

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

Ideal Conditions for Anitas Reef, Koh Similan in Thailand

Water Temp

Thermometer Emoji

20.9°C / 69.6°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 Anitas Reef, Koh Similan in Thailand

Anitas Reef, Koh Similan in Thailand shows typical northern hemisphere patterns with June being the warmest month (20.9°C) and December the coldest (16.9°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 Anitas Reef is Koh Similan

Koh SimilanKoh Similan

Koh Similan

23 Dive sites near Anitas Reef in Koh Similan

Find more dive sites in Thailand

ThailandThailand

Thailand

Got feedback?

Help us improve this dive site by giving us feedback.