Comoros - When to Visit

When to Visit Comoros

Climate guide & best times to travel

Monthly Climate Data for Comoros Average temperature and rainfall by month Climate Overview 13°C 18°C 24°C 29°C 35°C Rainfall (mm) 0 181 363 Jan Jan: 30.0°C high, 23.0°C low, 363mm rain Feb Feb: 30.0°C high, 23.0°C low, 292mm rain Mar Mar: 30.0°C high, 23.0°C low, 279mm rain Apr Apr: 30.0°C high, 22.0°C low, 315mm rain May May: 29.0°C high, 21.0°C low, 257mm rain Jun Jun: 28.0°C high, 19.0°C low, 267mm rain Jul Jul: 27.0°C high, 18.0°C low, 244mm rain Aug Aug: 27.0°C high, 18.0°C low, 150mm rain Sep Sep: 28.0°C high, 19.0°C low, 109mm rain Oct Oct: 29.0°C high, 20.0°C low, 97mm rain Nov Nov: 30.0°C high, 21.0°C low, 109mm rain Dec Dec: 30.0°C high, 22.0°C low, 218mm rain Temperature Rainfall
Comoros sits in the western Indian Ocean between Madagascar and the East African coast, and its weather reflects that position in ways that shape every visit. The archipelago runs on two broad seasons rather than four, and understanding which one you're walking into makes the difference between a trip that feels effortless and one that feels soggy. Temperatures stay warm year-round. The coolest nights in July and August drop only to around 18°C (65°F). The hottest days in March and December reach about 30°C (87°F). The real variable is rainfall, not warmth. The wet season runs from roughly November through April, when the northwest monsoon sweeps moisture across the islands. January tends to be the heaviest month. Rainfall can top 360mm in a single month. Expect persistent, heavy downpours that clear quickly but return just as fast. The islands turn intensely green during this period. The volcanic slopes of Mount Karthala on Grande Comore take on a lush, almost surreal quality. Humidity sits steady around 70% throughout the year. During the wet season it combines with warmth in a way that makes late afternoons feel heavy. The dry season from roughly May through October brings noticeably lighter skies. August through October are the standout months. Rainfall drops to under 100mm. October averages just 97mm. Temperatures ease slightly as the southeast trade winds arrive. Comoros never becomes cool. July and August at 27°C (81°F) during the day with fresh trade-wind breezes feel meaningfully different from the wet-season heat. This is when Chomoni Beach and Mitsamiouli Beach on Grande Comore are most reliably pleasant. The waters around Moheli Marine Park tend toward their clearest.

Best Time to Visit

Recommended timing for different travel styles.

Beach and relaxation
August through October offers the most reliable combination of lower rainfall, comfortable temperatures, and calmer seas. The Indian Ocean around Comoros can be rough during the peak wet months. September and October, when rainfall has dropped to its annual low and the trade winds are easing, tend to give the most consistently swimmable conditions at places like Chomoni Beach.
Cultural exploration
June and July hit a useful sweet spot. The wet season has ended. The islands are still green from the rains. The modest festival calendar around Moroni tends to be active. Temperatures sit at 28°C (83°F) during the day with cooler evenings. Walking the old stone town of Moroni or visiting the National Museum of the Comoros is more comfortable than in the peak wet-season heat.
Adventure and hiking
May through July is worth considering for anyone planning to climb Mount Karthala. The active volcano is accessible year-round in theory. The lighter rainfall of the early dry season means trails are less waterlogged. Visibility tends to be better at altitude. The risk of turning back mid-climb due to sudden downpours is lower than in January or February.
Budget
Budget travelers will find that Comoros is less crowded regardless of season. Crowds are low throughout the year. That said, the wet season from December through March tends to see the fewest international visitors. Accommodation in Moroni is generally easier to negotiate during this period. The trade-off is unpredictable rain and occasionally disrupted inter-island boat services.

What to Pack

Essentials and seasonal recommendations for Comoros.

Year-Round Essentials
Lightweight, fast-drying clothing in breathable fabrics
The mix of 70% humidity and steady warmth means any fabric that holds moisture turns uncomfortable within hours. Choose quick-dry clothing.
A good reef-safe sunscreen
The equatorial sun in Comoros is intense even on overcast wet-season days.
Insect repellent
Mosquitoes remain active year-round. They bite most at dawn and dusk, near freshwater areas. Bring repellent.
A waterproof bag or dry sack
A dry bag shields electronics and documents on inter-island boat crossings. These rides can be rough regardless of season.
Sturdy sandals that dry quickly
Sandals work for most beach and town walking. Closed shoes become important on volcanic trails around Mount Karthala.
A lightweight rain layer - a packable poncho or thin shell
Rain gear earns its place even in the dry season. Brief showers still arrive with little warning.
wet season from November through April
Clothing
a more substantial waterproof jacket, at least one full set of clothes kept sealed in a dry bag
Footwear
Flip-flops or waterproof sandals beat trainers for town walking. Trainers stay sodden for days.
Accessories
A quick-drying microfibre towel
dry season from May through October
Clothing
lighter layers for evenings, a light merino or cotton long-sleeve top
Layering Tip
July and August nights drop to 18°C (65°F). They feel cool after a warm day. A light merino or cotton long-sleeve top will get used. Sun protection needs extra diligence then. Cloud cover is thinner compared to the wet season.
Plug Type
Type C and Type E
Voltage
220V at 50Hz
Adapter Note
Travelers from the United States and Canada need a plug adapter. Check that devices handle 220V. Most modern electronics do. Older chargers and appliances may not.
Skip These Items
Leave the heavy winter jacket. You will never need it. Fast-drying layers use space better. A formal umbrella causes more trouble than it is worth on the islands. A packable poncho handles rain without wind-snapping drama. Leave valuable jewelry and anything harmed by salt air, humidity, or surprise soaking at home. Comoros feels warm. Yet avoid packing only sandals if hiking is planned. The volcanic terrain around Karthala is rough. It can damage feet and ankles without proper footwear.
Full Packing Checklist

Interactive checklist with shopping links for every item you need.

View Comoros Packing List →

Month-by-Month Guide

Climate conditions and crowd levels for each month of the year.

January

January brings the wettest conditions Comoros sees all year, with temperatures holding at 30°C (86°F) during the day and 23°C (74°F) overnight. Rainfall averages around 363mm, arriving in intense bursts that can last hours.

High 30°C (86°F)
Low 23°C (74°F)
Rainfall 363mm
Crowds Low
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February

February stays firmly in wet-season territory at 30°C (86°F) highs and 23°C (73°F) lows, with around 292mm of rain. Still substantial, though slightly less relentless than January. The islands are lush and the air has a clean, washed quality between storms.

High 30°C (86°F)
Low 23°C (73°F)
Rainfall 292mm
Crowds Low
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March

March is technically the end of the main wet season push and can feel like one of the more oppressive months. Highs reach 30°C (87°F), the warmest of the year, with 23°C (73°F) nights and about 279mm of rain. Afternoons in Moroni can feel close and humid.

High 30°C (87°F)
Low 23°C (73°F)
Rainfall 279mm
Crowds Low
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April

April sees temperatures ease fractionally to 30°C (86°F) highs and 22°C (72°F) lows, with 315mm of rain. Interestingly a slight uptick from March. The wet season is theoretically winding down. But April in Comoros still delivers serious rainfall.

High 30°C (86°F)
Low 22°C (72°F)
Rainfall 315mm
Crowds Low
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May

May marks the transition, with temperatures dropping to 29°C (85°F) highs and 21°C (70°F) lows, and rainfall easing to around 257mm. You'll start to notice more consistent dry spells between showers, and the light quality shifts.

High 29°C (85°F)
Low 21°C (70°F)
Rainfall 257mm
Crowds Low to Medium
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June

June feels like a different island from the peak wet months. Expect 28°C (83°F) highs, 19°C (67°F) lows, and around 267mm of rain, though it tends to fall more predictably. Evenings around Moroni become pleasant.

High 28°C (83°F)
Low 19°C (67°F)
Rainfall 267mm
Crowds Medium
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July

July is one of the most comfortable months in Comoros, with highs of 27°C (81°F) and lows dropping to a relatively fresh 18°C (65°F). Rainfall sits around 244mm, lower than June, though still present. The southeast trade winds make days feel airier than the numbers suggest.

High 27°C (81°F)
Low 18°C (65°F)
Rainfall 244mm
Crowds Medium
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August

August matches July for temperature, 27°C (81°F) highs, 18°C (65°F) lows, but rainfall falls sharply to about 150mm, making this noticeably drier. Beaches like Mitsamiouli tend to be at their most reliably clear and calm.

High 27°C (81°F)
Low 18°C (65°F)
Rainfall 150mm
Crowds Medium
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September

September continues the dry season with 28°C (82°F) highs, 19°C (66°F) lows, and just 109mm of rainfall. This is arguably Comoros at its most agreeable, with warm but not oppressive days and swimmable conditions around the islands.

High 28°C (82°F)
Low 19°C (66°F)
Rainfall 109mm
Crowds Medium
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October

October is the driest month of the year, 97mm of rainfall, 29°C (84°F) highs, 20°C (68°F) lows, and the last reliable window before the rains return. Moheli Marine Park sees some of its best underwater visibility during this period.

High 29°C (84°F)
Low 20°C (68°F)
Rainfall 97mm
Crowds Medium
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November

November signals the return of the wet season, with temperatures climbing back to 30°C (86°F) highs and 21°C (68°F) lows, and rainfall rising to around 109mm. Showers become more frequent and less predictable as November progresses.

High 30°C (86°F)
Low 21°C (68°F)
Rainfall 109mm
Crowds Low to Medium
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December

Late December brings noticeably heavier rain, about 218mm, with highs of 30°C (87°F) and lows of 22°C (72°F). The wet season is settling in. Travelers bound for Comoros should expect afternoon downpours as the norm. Pack accordingly.

High 30°C (87°F)
Low 22°C (72°F)
Rainfall 218mm
Crowds Low
View Details →