Climate of Comoros

Last updated: April 14, 2025

The climate of Comoros is characterized by warm temperatures and significant humidity, creating a tropical atmosphere that is ideal for lush vegetation. In Anjouan, the temperature ranges from a pleasant minimum of 19°C (67°F) in August to a peak of 33°C (91°F) in January, while Grande Comore sees an average maximum humidity of 81% in the same month. Precipitation is quite variable across the islands, with Mohéli experiencing a minimum of just 12 mm (0.5 in) in September, contrasting sharply with Anjouan, where February can bring a deluge of up to 226 mm (8.9 in). This blend of warmth, moisture, and rainfall shapes the unique climate and rich biodiversity of the Comoros archipelago.

Comoros Climate Zones

The Comoros, an enchanting archipelago in the Indian Ocean, boasts a predominantly tropical climate classified as Af under the Köppen-Geiger system. This means that each of its main islands—Anjouan, Grande Comore, and Mohéli—experiences lush vegetation and high humidity, contributing to their stunning landscapes. The warm temperatures, coupled with abundant rainfall, create an ideal environment for diverse flora and fauna, making the Comoros a paradise for nature enthusiasts and explorers alike.

Köppen-Geiger Climate Classification of Comoros
Climate ZoneDescription
AfTropical rainforest climate with no dry season and high temperatures year-round.

Comoros Temperature by Month

The climate in Comoros showcases a warm and tropical atmosphere throughout the year, with monthly temperature patterns reflecting mild fluctuations. January and February kick off the year with minimums consistently at 23°C (74°F) and maximums touching 33°C (91°F) before gradually cooling down in the following months. By April, daytime highs dip slightly to around 32°C (90°F), while May introduces the coolness of 21°C (70°F) at night, marking the start of a gradual transition into the colder months. June and July bring even cooler nights, with minimums dropping to 19°C (67°F) and maximums stabilizing at about 29°C (85°F). As the year progresses, September sees a slight uptick again, reaching highs of 30°C (86°F), with November and December maintaining temperatures near the year's higher range, peaking at 32°C (90°F). Overall, while Comoros maintains a warm climate year-round, the subtle shifts reflect its unique tropical environment, inviting visitors to enjoy its warmth and beauty in every season.

Monthly Temperatures in Comoros

The chart illustrates Comoros's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec808080807977767576788080
Data source: Comoros temperature data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

Precipitation Patterns in Comoros

The Comoros archipelago experiences diverse precipitation patterns that reveal fascinating seasonal trends. February stands out as the wettest month in Anjouan, with a remarkable maximum of 226 mm (8.9 in) of rainfall, creating a lush environment. In contrast, Mohéli sees a drier spell in September, where precipitation drops to a minimum of 12 mm (0.5 in), marking the end of the dry season. The frequency of rainy days also varies significantly, with August in Mohéli recording as few as 3 days, whereas Anjouan experiences an impressive 26 days of rainfall in March. This variation not only highlights the islands' unique climatic conditions but also influences the vibrant ecosystems and agriculture found throughout the region.

Precipitation Trends in Comoros

The chart illustrates Comoros's yearly temperature patterns, showing data aggregated from various locations across the region, highlighting seasonal variations and monthly temperature changes.
JanFebMarAprMayJunJulAugSepOctNovDec22422617813145342722286092171
Data source: Comoros precipitation data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Comoros Humidity

The climate in Comoros is characterized by high humidity levels that vary throughout the year. Notably, August sees a minimum humidity of 73% in Anjouan, while January experiences the peak with a maximum of 81% in Grande Comore. This trend suggests that the islands tend to be most humid at the beginning of the year, a pattern that influences both the weather and overall comfort for residents and visitors alike. As the seasons transition, the humidity remains relatively high, reflecting the tropical environment that defines Comoros.

Average Humidity in Comoros

Comoros's Average Monthly Humidity Levels: This chart highlights Comoros's humidity fluctuations throughout the year, making it easy to compare seasonal trends. See how humidity varies month by month and understand Comoros's climate patterns.
JanFebMarAprMayJunJulAugSepOctNovDec81%81%76%77%76%73%73%73%75%76%76%80%
Data source: Humidity data for Comoros generated using information from the Copernicus Climate Change Service.

Comoros UV Index Trends

The UV Index in Comoros reveals striking patterns, particularly in its highest exposure months. Notably, Mohéli experiences an average daily maximum UVI of 16 in January, while Grande Comore mirrors this peak with the same figure of 16 in March. These measurements indicate a consistent trend towards elevated UV levels, emphasizing the need for protective measures against sun exposure during these critical months. As the intensity of solar radiation remains high, both locals and visitors should stay vigilant and prioritize sun safety.

Maximum UV Index Levels in Comoros

The chart shows the monthly maximum UV Index (UVI) in Comoros, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec16161613119101213131315
Data source: Comoros UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Sunshine Duration in Comoros

The sunshine duration in Comoros showcases fascinating regional trends throughout the year. In January, Anjouan enjoys around 268 hours of sunlight, while Grande Comore basks in a slightly sunnier 274 hours. As the year progresses into December, both islands experience a remarkable increase in sunshine, with Mohéli recording 365 hours and Grande Comore leading the way with an impressive 366 hours. This notable jump from January to December highlights the islands' distinctive climatic patterns, showing a clear transition into a much sunnier season.

Monthly Sunshine Duration in Comoros

The Comoros sunshine duration chart shows the total hours of direct sunlight in Comoros each month, excluding cloudy or obstructed periods, and compares the sunshine duration across different months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec268h312h341h329h340h324h335h344h340h362h358h365h
Data source: Comoros sunshine duration data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.

Chance of Sun in Comoros

In the picturesque islands of Comoros, weather patterns reveal intriguing trends in sunny days throughout the year. For instance, February in Anjouan sees a modest 11% likelihood of sunshine, suggesting a rather wet and cloudy period. However, as the seasons shift to August, the atmosphere in Mohéli dramatically transforms; the chances of basking in sunlight rise sharply to an impressive 83%. This striking contrast underscores the region's seasonal variability, making August the ideal time for sun-seekers to embrace the vibrant landscapes of Comoros.

Percentage of Sunny Days in Comoros

The chart illustrates the percentage of sunny days in Comoros throughout the year. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Comoros experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%11%37%31%59%71%74%75%69%61%70%58%
Data source: Comoros chance of sun data, generated using information from the Copernicus Climate Change Service.

Average Daylight Hours Across the Comoros

In the enchanting island of Mohéli, daylight hours vary with the seasons, showcasing the natural rhythm of tropical life. In June, residents and visitors alike bask in approximately 11 hours of sunlight, perfect for enjoying the lush landscapes and vibrant marine life. As the year draws to a close in December, daylight increases to around 12 hours, allowing for even more opportunities to explore this stunning paradise. This gradual extension of daylight not only enhances outdoor activities but also deepens the island's captivating charm throughout the year.

Average Monthly Daylight Hours in Comoros

This chart shows the total daylight hours Comoros receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 43m12h 28m12h 8m11h 48m11h 31m11h 24m11h 28m11h 42m12h 1m12h 21m12h 39m12h 48m
Data source: Comoros daylight hours, calculated by summing the hours between sunrise and sunset for each day.

Climate Breakdown by Comoros Region

Nestled in the Indian Ocean, Anjouan, Comoros, boasts a tropical climate that delights with warm temperatures year-round. From January to March, the island experiences average highs around 27°C (80°F) and a generous share of rainfall, especially in January and February, reaching up to 224 mm (8.8 in). As the year progresses, the weather remains pleasantly warm, with July and August offering cooler highs of about 24°C (76°F), perfect for enjoying the lush landscapes amidst lower humidity levels. The island's climate transitions in November and December, welcoming a surge in precipitation while maintaining comfortable temperatures. For a deeper dive into the region's weather patterns, check out Anjouan climate.

Nestled in the Indian Ocean, Grande Comore boasts a tropical climate that's both inviting and vibrant year-round. With temperatures averaging around 26°C (80°F) throughout the year, this island paradise offers warmth tempered by humidity levels hovering around 77-81%. Most of the rain falls between January and April, where January sees a peak at 211 mm (8.3 in), while the dry season from June to September invites sun-seekers with minimal rainfall, around 27 mm (1.1 in) in August. Whether you’re enjoying the lush greenery or basking on sun-kissed shores, the weather adds to the enchantment of Grande Comore. Discover more about this captivating climate at Grande Comore climate.

Nestled in the heart of the Comoros, Mohéli's climate offers a tropical haven marked by consistently warm temperatures year-round. From a balmy average of 27°C (82°F), with highs reaching 29°C (85°F), the island enjoys a welcoming warmth, while the humidity hovers between 73% and 81%. Rainfall is notably heaviest from January to April, with January's precipitation peaking at 151 mm (5.9 in), before tapering off into drier months. Visitors can relish the natural beauty and lush landscapes that thrive in this environment, making Mohéli an enchanting destination for those seeking both adventure and tranquility. For more detailed insights, explore the full Mohéli climate.

Summary and Key Takeaways on the Climate of the Comoros

The climate of Comoros showcases a beautiful yet dynamic interplay between temperatures and precipitation patterns throughout the year. In Anjouan, temperatures range from a mild 19°C (67°F) in August to a warm 33°C (91°F) in January, illustrating the islands' tropical essence. Rainfall also varies significantly, with 12 mm (0.5 in) gracing Mohéli in September, contrasted by a dramatic 226 mm (8.9 in) in Anjouan during February, emphasizing a strong wet season. Humidity levels remain consistently high, peaking at 81% in January on Grande Comore, while dipping to a comfortable 73% in August on Anjouan. This combination of warmth, moisture, and seasonal variation characterizes Comoros' inviting climate, making it a fascinating destination for nature lovers and climate enthusiasts alike.