Mount Karthala
Volcano Active Comorian volcano with frequent eruptions
An active shield volcano on Grande Comore, Mount Karthala offers volcanic landscapes, a large summit caldera and guided hikes to view fumaroles and endemic mountain flora; eruptions have shaped the island.
Mount Karthala is an active shield volcano that dominates the central highlands of Grande Comore (Ngazidja) in the Comoros archipelago. It is the country’s highest mountain and one of the largest active volcanoes in the region.
The summit area contains a large crater and volcanic slopes covered by montane forest and lava fields in places; periodic eruptions have produced lava flows and ash deposits that have altered the landscape. The volcano is of interest to scientists and experienced trekkers, though access and safety depend on current volcanic activity.
Mount Karthala sits near the interior of Grande Comore and is visible from the island’s coastal settlements, including the capital, Moroni. It is the dominant topographic feature of the island.
- Elevation: At about 2,361 metres it is the highest point of Grande Comore and of the Comoros archipelago.
- Volcanic activity: An active shield volcano with documented eruptions in the 20th and 21st centuries; volcanic activity periodically affects local communities and air quality.
How to Get to Mount Karthala #
Most visitors travel to Moroni (Prince Said Ibrahim International Airport) on Grande Comore and then arrange a local transfer to trailheads. Local guides and park authorities coordinate trekking and safety.
Tips for Visiting Mount Karthala #
- Mount Karthala is an active volcano-check local advisories and flight schedules to Grande Comore before planning a trek.
- Hire local guides from Moroni and arrange transport and permits; trails can be muddy and the route unmarked in places.
- Bring warm clothing for summit nights-temperatures fall markedly above the forest line despite the tropical latitude.
Best Time to Visit Mount Karthala #
Best visited in the dry season (May-October) for clearer views and safer trekking conditions.
Weather & Climate near Mount Karthala #
Mount Karthala's climate is classified as Oceanic - Oceanic climate with consistently warm temperatures year-round. Temperatures range from 7°C to 19°C. Abundant rainfall (1916 mm/year), wettest in January with a pronounced dry season.
January
January is cool with stifling humidity (dew point 24°C). The wettest month with heavy rain (347 mm) and partly cloudy skies.
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February
February is cool with stifling humidity (dew point 24°C). Heavy rain (284 mm) and partly cloudy skies.
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March
March is cool with stifling humidity (dew point 24°C). Heavy rain (306 mm) and partly cloudy skies.
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April
April is cool with muggy conditions (dew point 24°C). Significant rainfall (197 mm) and partly cloudy skies.
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May
May is cool with muggy conditions (dew point 23°C). Regular rainfall (91 mm).
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June
June is cool with highs of 17°C and lows of 8°C. Moderate rainfall (70 mm).
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July
July is cool with highs of 16°C and lows of 8°C. Moderate rainfall (75 mm).
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August
August is the coolest month with highs of 16°C and lows of 7°C. Moderate rainfall (45 mm) and mostly sunny skies.
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September
September is cool with highs of 17°C and lows of 8°C. The driest month with just 29 mm.
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October
October is cool with highs of 18°C and lows of 8°C. Moderate rainfall (71 mm) and mostly sunny skies.
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November
November is cool with muggy conditions (dew point 23°C). Significant rainfall (137 mm) and mostly sunny skies.
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December
December is cool with muggy conditions (dew point 24°C). Heavy rain (264 mm) and partly cloudy skies.
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