Comoros in December: Weather, Crowds & What to Expect

Grande Comore (Ngazidja) - Moroni & coastal lowlands

By December the rainy season is well established: hot, sticky days in the 30s, dramatic afternoon thunderstorms and rising chances of tropical disturbances. Hotels in Moroni may ask for flexible arrival times due to flight or ferry interruptions, and beaches can see rougher surf; however, the shoreline greenery is lush and some smaller resorts run off-season rates. Mosquito protection, storm contingency planning and a willingness to rearrange plans are essential.

Mount Karthala & central highlands (Grande Comore interior)

December returns to true wet-season behavior with frequent rains and mist enveloping the highlands; summit views of the crater are often impossible and trails become increasingly slick. Volcanic hazards unrelated to rainfall can also restrict access, so always consult local park authorities. If you visit now, aim for short day walks, expect mud, and carry full rain protection and warm clothing.

Anjouan (Nzwani) - Mutsamudu, spice plantations & steep coasts

December moves deeper into the hot, humid wet season with frequent storms and raised seas; beach days often alternate with torrential downpours. Clove and ylang-ylang plantations are lush but accesses to some forested tracks may be restricted; small guesthouses may close on short notice during storms. Keep mosquito protection at hand and prepare for flexible itineraries due to transport disruptions.

Mohéli (Mwali) & outer islets - marine park, turtles and quiet beaches

December intensifies wet-season patterns with stormy weather and the peak risk window for tropical disturbances into the coming months; surf increases and small-boat activity is often curtailed. The island is dramatic and green, but travel logistics become more complicated - carry waterproof gear, insect protection, and be ready to change plans if ferries or flights are suspended.