Ylang-Ylang, an Active Volcano & a Fish Thought Extinct: A Year in Comoros
A trio of Indian Ocean islands that quietly supply much of the world’s ylang-ylang and vanilla, home to a fish scientists once believed died out with the dinosaurs.
Comoros is a small volcanic archipelago in the Indian Ocean between Madagascar and the African mainland, known internationally as the source of much of the world’s ylang-ylang, the fragrant flower behind many classic perfumes, alongside significant vanilla production. It’s also home to Mount Karthala, one of the largest active volcanic calderas on Earth, and the waters nearby produced one of the 20th century’s great zoological surprises.
Comoros’ Year at a Glance
Island by Island
Hiking an Active Volcano
Grande Comore, home to the capital Moroni, is dominated by Mount Karthala, an active volcano with one of the largest calderas on Earth — its most recent eruptions occurred within the past two decades, and the summit remains a genuine, if demanding, hiking destination.
- Hikers: the cooler, drier season offers the most comfortable conditions for the multi-hour climb to Karthala’s summit, best arranged with a local guide.
- Culture-focused travelers: Moroni’s old town and its historic mosque are worth a slow walk, with a genuine blend of African, Arab, and French influences visible throughout.
Whales, Turtles & the Fish That Wasn’t Extinct
Mohéli, the smallest and least developed of the three main islands, centers on a marine national park known for sea turtle nesting and, during the Southern Hemisphere migration season, humpback whales passing close to shore.
- Wildlife enthusiasts: humpback whales are most reliably seen roughly July through October, making this the strongest window for a boat-based whale-watching excursion.
- Divers: Comorian waters gained global scientific fame in 1938 when a coelacanth, a fish believed extinct for over 65 million years, was found alive nearby — a discovery still referenced as one of the great zoological surprises of the 20th century.
Vanilla, Ylang-Ylang & Cyclone Awareness
Comoros’ hot, humid season brings the bulk of the year’s rainfall and a real, if lower than some neighboring islands, risk of cyclone activity, worth monitoring for any trip planned in this window.
- Practical note: Comoros sees fewer direct cyclone hits than Madagascar or Mozambique, but travel insurance with weather-related coverage remains a sensible precaution for this season.
- Fragrance enthusiasts: ylang-ylang harvesting happens across multiple periods through the year, and a visit to a distillation site offers genuine insight into how the flower becomes the fragrance base found in perfumes worldwide.
Tastes of Comoros: What to Eat
African, Arab & French Influences on a Small Island Table
Know Before You Go: Practical Tips
Beyond the Itinerary
Quick Decision Guide
| If you want… | Go in… | Head to… |
|---|---|---|
| Comfortable Mount Karthala hiking | May–October | Grande Comore |
| Humpback whale watching | July–October | Mohéli Marine Park |
| Lower prices, quieter season | November–April | Any island, monitor cyclone risk |
| Diving & marine biodiversity | May–October | Mohéli & the wider coast |
Frequently Asked Questions
What is the best time to visit Comoros?
May through October offers cooler, drier weather, better conditions for hiking Mount Karthala, and the strongest window for humpback whale watching, while November through April is hotter and wetter with a real, if comparatively lower, cyclone risk.
Why is Comoros called the “Perfume Islands”?
Comoros is a major global source of ylang-ylang, the fragrant flower used in many classic perfumes, and also a significant vanilla producer, giving the islands this well-known nickname.
What is Mount Karthala?
An active volcano on Grande Comore with one of the largest calderas on Earth, still capable of eruption, and a demanding but rewarding hiking destination best tackled with a local guide.
What is the coelacanth, and why is it connected to Comoros?
The coelacanth is a fish believed extinct for over 65 million years until one was found alive near Comoros in 1938, a discovery still referenced as one of the great zoological surprises of the 20th century.
Is Comoros safe to visit?
Comoros carries a “exercise increased caution” advisory from the US State Department, citing limited healthcare, unreliable transport, and occasional political unrest. Standard precautions, including using licensed ferries and travel insurance with medical evacuation coverage, are strongly recommended.
Planning a trip through Comoros’ islands and seasons?
Huntown’s Comoros listings are just getting started — check current stays and local services as more of the islands come online.
Explore Comoros on Huntown →
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