Comoros in January: Weather, Crowds & What to Expect

Grande Comore (Ngazidja) - Moroni & coastal lowlands

Heavy humidity and frequent afternoon downpours mark January on the coast around Moroni; temperatures sit hot and close to 30-32°C by day, with the sea offering the only real relief. Expect short but intense storms and surgey surf after strong winds, which can close small beachside restaurants and make inter-island boat trips uncomfortable. Mosquitoes are abundant, so pack repellent and a light long-sleeve for evenings, and plan flexible ferry schedules - ferries to Anjouan or Mohéli are often delayed in stormy weather.

Mount Karthala & central highlands (Grande Comore interior)

Thick, warm air and frequent heavy showers characterize January on Karthala’s lower slopes, while the summit is often shrouded in cloud and mist. Daytime temperatures in the highlands stay lower than the coast - mid-20s - but the humidity makes trails slippery and visibility poor for crater views. Hike plans should be flexible as tracks become waterlogged after downpours, and check with local guides for any volcanic advisories.

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

January brings heavy, tropical rains to Anjouan with humidity that makes the spice-scented air sticky; coastal towns like Mutsamudu experience short, intense downpours that flood narrow streets. Boat crossings from Moroni or Mohéli are often rough or cancelled, so expect delays. The island’s steep inland tracks become slippery; visiting spice farms can still be rewarding if you’re prepared with boots and a waterproof layer.

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

January is within the wet season here, with warm, humid days and heavy tropical showers that can flood low-lying areas near Fomboni. Sea conditions are variable: sheltered bays allow brief calm for snorkel trips but open passages may be rough, so local operators run fewer full-day boat trips. Turtle-nesting beaches start to see activity; bring insect repellent and expect fewer tourist services than on Grande Comore.