Rosario
Rosario is a highly recommended dive site in the morning, perfect for divers of advanced level. Located near Dzamandzar, District de Nosy Be, Diana, Antsiranana Province, Madagascar, this site offers a maximum depth of 20m and excellent visibility up to 19m. With its stunning landscape and a vibrant field of fan coral, it provides an ideal habitat for macro enthusiasts.
Exploring Rosario, divers have the opportunity to encounter a variety of pelagic species and predators. Keep an eye out for the elusive crocodile fish, rhinopias, antennae, leaf scorpion fish, and stingrays. Additionally, the site boasts magnificent gorgonian fields in remarkable health, creating a breathtaking underwater scenery. Witness schools of alicorn fish and surgeon fish, and if you're lucky, catch a glimpse of a shark on rare occasions.
Rosario consists of two reefs that are separated by a small sand bank spanning 20-30m. Divers have the option to explore either reef during their dive. Drift diving is the norm here, with a gentle current that allows for a safe and enjoyable underwater experience. This dive site in Madagascar is a definite must-visit for any underwater adventurer.
Remember to plan your dive responsibly, considering the proper diving equipment and following safety guidelines. Experience the wonders of Rosario and indulge in the beauty of Madagascar's underwater world.
Exploring Rosario, divers have the opportunity to encounter a variety of pelagic species and predators. Keep an eye out for the elusive crocodile fish, rhinopias, antennae, leaf scorpion fish, and stingrays. Additionally, the site boasts magnificent gorgonian fields in remarkable health, creating a breathtaking underwater scenery. Witness schools of alicorn fish and surgeon fish, and if you're lucky, catch a glimpse of a shark on rare occasions.
Rosario consists of two reefs that are separated by a small sand bank spanning 20-30m. Divers have the option to explore either reef during their dive. Drift diving is the norm here, with a gentle current that allows for a safe and enjoyable underwater experience. This dive site in Madagascar is a definite must-visit for any underwater adventurer.
Remember to plan your dive responsibly, considering the proper diving equipment and following safety guidelines. Experience the wonders of Rosario and indulge in the beauty of Madagascar's underwater world.
Diving Conditions Score for Rosario
8.5
Very GoodVery good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Rosario
Depth
20m
Visibility
19m
Experience Level
advanced
Weather Conditions for Rosario
Wave Height
0.38m
Wind Speed
6.4 m/s
Water Temp
28.5°C
Visibility
46.6km
Cloud Cover
10%
Wave Period
5.6s
Air Temperature
23.1°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Rosario
Alpha
Dive Score Chart for Rosario
Best time to dive: 7:00 with score 9.054982716049386/10. Water conditions: Waves 0.5m, Wind 1 m/s.Best night dive time: 23:00 with score 8.797779365079366/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Rosario: 06:00
Sunset at Rosario: 18:00
Optimal diving conditions at Rosario 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
7:00Score: 9.1/10
Waves: 0.5m (5.4s), Wind: 1 m/s
Best Night
23:00Score: 8.8/10
Waves: 0.6m, Wind: 2.4 m/s
Seasonal Analysis for RosarioAlpha
Historical patterns and best seasons for diving at Rosario
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 Rosario
Summer
Avg. Score: 9.7/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Rosario
May
Score: 9.8
June
Score: 9.8
July
Score: 9.7
Ideal Conditions for Rosario
Water Temp
26.1°C / 79.0°F
April
Visibility
13.5m / 44.3ft
May
Wave Height
1.1m / 3.6ft
March
Wave Period
8.0s
January
Seasonal Insights for Rosario
Rosario follows southern hemisphere patterns with April being the warmest month (26.1°C) and October the coldest (22.2°C). The calmest conditions typically occur in March with average wave heights of 1.1m 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). July is usually the driest month with 0.3mm 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.
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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