Guinea-Bissau in December: Weather, Crowds & What to Expect

Bissau & Coastal Lowlands

December typically brings warm, dry weather with cooler nights and a reduction in biting insects compared with the wet months; daytime temperatures are comfortable for exploring Bissau’s markets and colonial sites. The harmattan begins to reappear in parts of the month, introducing some dust and lowering humidity for a few weeks. This is one of the best months to travel for reliable transport and clearer skies - pack a light jumper for nights and a hat for daytime heat.

Bijagós (Bissagos) Archipelago

December is one of the most dependable months for a Bijagós visit: steady sea conditions, lower humidity, and warm, sun-filled days make island-hopping straightforward. The beaches are firm and accessible at low tide, and guided night walks for turtles and birdwatching are fully operational on main islands. Bring sun protection and light layers for breezy mornings; book inter-island boats in advance to secure preferred departure times.

Southern Mangroves & Rainforest (Tombali, Cacine)

December brings warm, breezy days and significantly reduced rain, making exploration of Tombali’s mangrove labyrinths comfortable and reliable. Nighttime is less humid, and salt pans and tidal flats are easier to traverse at low tide; it’s a good month for cultural visits to Catió and coastal villages. Pack light, breathable clothing, sun protection and a good insect repellent for dusk excursions.

Eastern Interior Savanna & Highlands (Gabú, Bafatá)

December’s dry, clear conditions make the eastern interior straightforward to explore: warm days, cool nights, and lower humidity than the coast. Savanna grasses crunch underfoot and rivers are low, revealing seasonal pools and wildlife concentrated around waterholes. Travelers should still bring sun hats and sunblock; nights can be unexpectedly cool so a light layer is handy for early-morning excursions.