When is the best time to visit Bissau, Guinea-Bissau?

Understanding Bissau's Seasonal Climate

Bissau experiences two distinct seasons: a dry season from November to May and a heavy monsoon from June to October. Because the city sits on the Geba River estuary, humidity stays elevated year-round, but seasonal rainfall dictates transport and travel feasibility.

Dry Season: November to May

This is the most reliable period to explore Bissau and transfer through its port to the Bijagós Archipelago. From December through February, dry Harmattan winds arrive from the interior, creating hazy skies and slightly cooler evenings. Temperatures climb sharply between March and May. Throughout these dry months, city transport—including local taxis and toca-toca minibuses—runs smoothly without storm disruptions.

Rainy Season: June to October

Torrential rains and frequent thunderstorms define this period, peaking in July and August. Severe downpours cause street flooding and make unpaved roads difficult to navigate. Sea crossings from Porto de Bissau face rough conditions and delays. Travelers should generally avoid August unless prepared for transport bottlenecks and elevated humidity.

Timing and Travel Logistics

• Carnaval de Bissau (February or March): The annual carnival brings street parades and traditional papier-mâché masks to central avenues. Flights into Osvaldo Vieira International Airport (OXB) and central accommodations book up early.
• Best Months for Island Transit: Travel between November and April offers the calmest water for boat trips departing Bissau.
• What to Pack: Pack lightweight, breathable clothing, high-strength insect repellent, sturdy walking shoes for colonial stone streets, and sun protection.