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Diego Suarez Bay

Antsiranana—still commonly called Diego Suarez after the Portuguese navigator—commands the world's second-largest natural harbour (after Rio de Janeiro). The strategic bay at Madagascar's northern tip has attracted Malagasy, Arab, Portuguese, French, and British interests over centuries. Today the Emerald Sea (Mer d'Émeraude) lives up to its name: a shallow, turquoise bay dotted with small islands perfect for day trips by pirogue. Ramena Beach is the closest swimming beach to town, while the Three Bays (Baie des Dunes, Baie des Pigeons, Baie des Sakalava) require 4x4 access but reward adventurers with pristine windswept shores. Montagne d'Ambre National Park protects endemic species just 30 km inland.

Key Information

Water Temperature

25-29°C year-round

Best Months

April-November (dry season)

Unique Feature

World's second-largest natural harbour

Nearby

Mer d'Émeraude, Three Bays, Montagne d'Ambre

Getting There

Antsiranana Airport or 1,000 km from Tana

Rankings

Criterion	Rating	Notes
Beauty	High	Dramatic bay, emerald waters
Uniqueness	Exceptional	Massive natural harbour
Access	Moderate	Remote northern tip
Adventure	High	4x4 access to remote beaches

Frequently Asked Questions

Where is Diego Suarez Bay?

Diego Suarez Bay is located in Diana Region, Indian Ocean. It sits on Madagascar and features sand beaches.

What is the best time to visit Diego Suarez Bay?

The best time to visit Diego Suarez Bay is varies by season. Check local weather conditions before planning your trip.

Is Diego Suarez Bay safe for swimming?

standard ocean safety precautions apply