Comoros in May: Weather, Crowds & What to Expect

Grande Comore (Ngazidja) - Moroni & coastal lowlands

May brings the start of the drier, cooler period and a noticeable drop in humidity; sea breezes pick up and days feel more comfortable in the high 20s Celsius. Inter-island boat crossings become steadily more reliable, and diving operators reopen regular schedules; pack a light windbreaker for cooler evenings. The drying of the air makes city walking and the old medina of Moroni much more pleasant compared with the wet months.

Mount Karthala & central highlands (Grande Comore interior)

May signals the arrival of the drier season: mornings are often clear with crisp air near the summit and afternoons staying mild. This is when the highland forest looks at its freshest and cloud layers tend to break, improving the odds for a successful summit to Karthala’s crater rim. Hikes get easier underfoot and local guides start scheduling more regular treks.

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

May’s arrival of the drier months brings a noticeable drop in humidity and more reliable sunshine; sea conditions calm and inter-island ferries run with fewer interruptions. Inland walking through spice plantations and coastal clifftracks becomes much more enjoyable as trails dry, and local markets are lively with produce. Pack light clothes for the warm days and a wind layer for cooler evenings near the sea.

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

May marks the beginning of the reliably drier season and a noticeable improvement in sea clarity and boat reliability; daytime temperatures moderate to the mid-20s with breezy afternoons. This is one of the best months for diving and snorkeling within Mohéli Marine Park, and small guesthouses begin to fill with eco-minded visitors. Bring reef-safe sunscreen and a light jacket for cooler pre-dawn boat departures.