Comoros Weather & Climate Guide 2025
Plan your trip with detailed weather information and seasonal tips for Comoros.
The Comoros archipelago is a hidden gem in the Indian Ocean, offering pristine beaches, active volcanoes, and rich Swahili-Arab culture. With lush tropical forests, world-class diving, and warm hospitality, this off-the-beaten-path destination promises authentic island adventures.
Best Time to Visit
Best Months
May to October (dry season)
Months to Avoid
December to March (rainy season)
Climate Overview
Comoros has a tropical maritime climate with two distinct seasons: a hot, humid rainy season from November to April and a cooler, drier season from May to October. Temperatures are relatively stable year-round, ranging from 24-30°C at sea level, with the highland areas around Mount Karthala significantly cooler. The islands lie in the southwestern Indian Ocean cyclone belt, and tropical storms occasionally affect Comoros between December and March. Humidity is high throughout the year, particularly on Anjouan which receives the most rainfall.
Month-by-Month Guide
What to expect each month of the year.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seasonal Planning Guide
Complete weather data, packing lists by season, and event calendars.
Seasonal Breakdown
Detailed information for each season.
🌸 Spring
Apr-May
April marks the transition from the wet to dry season — rain becomes less frequent though some showers persist. May signals the start of the dry season with increasingly clear skies, calmer seas, and ideal conditions for beach activities and hiking.
☀️ Summer
Jun-Aug
The core of Comoros' dry season — warm, sunny, and relatively dry with calm seas perfect for snorkeling and diving. July-August adds the spectacular humpback whale migration to Mohéli Marine Park. This is the most popular tourist period.
🍂 Fall
Sep-Oct
September-October is an excellent shoulder period — whale watching continues through September, the dry season holds, and tourist numbers drop from the July-August peak. October is the transition month with the first rains of the wet season beginning toward month's end.
❄️ Winter
Nov-Mar
The rainy season brings heavy tropical downpours, high humidity, and occasionally rough seas. Cyclone risk increases. However, turtle nesting peaks on Mohéli, ylang-ylang harvest begins, and vanilla flowers in December-January. Some visitors enjoy the lush green landscapes despite the rain.
What to Pack
Seasonal packing recommendations.
Year-Round Essentials
- Modest clothing (cover shoulders and knees)
- Comfortable walking shoes
- Sun protection (hat, sunscreen, sunglasses)
- Light scarf or shawl (for religious sites)
- Reusable water bottle
- Power adapter
- Basic first aid kit
Hot Weather Additions
- Lightweight, breathable fabrics
- Extra sun protection
- Cooling towel
- Light colors to reflect heat
- Sandals with back straps
Cool Weather Additions
- Warm layers (fleece, sweater)
- Light jacket or coat
- Rain gear (umbrella, waterproof jacket)
- Closed-toe shoes
- Warm accessories (if winter)
Events & Crowd Levels
Plan around busy periods and special events.
🔴 High Season
Jul-Aug (peak whale watching and best weather)
Higher prices, advance booking essential, crowded attractions.
🟡 Shoulder Season
May-Jun and Sep-Oct (good weather, fewer tourists)
Good balance of weather and crowds. Reasonable prices.
🟢 Low Season
Nov-Apr (rainy season, lowest prices)
Best deals, fewer tourists. Some services may be limited.
Major Events & Holidays
National holiday commemorating independence from France (1975). Celebrations include parades, traditional music and dance performances, cultural events in Moroni and major towns.
Not an event but natural spectacle. Humpback whales migrate through Mohéli Marine Park waters to give birth and raise calves. Peak viewing August-September with boat tours available.
Main harvest period for ylang-ylang flowers. Distilleries operate at full capacity. Best time to visit plantations and see traditional extraction processes.
Vanilla orchids flower during this period. Plantation tours show the delicate hand-pollination process. Fascinating agricultural experience for visitors.
Green sea turtles nest on Mohéli beaches throughout the year with peak activity during these months. Night tours available to watch nesting.
Major Islamic celebration marking end of Ramadan. Three-day festival with prayers, feasting, new clothes, family gatherings. Banks and most businesses closed. Cultural experience for visitors.
Festival of Sacrifice, one of Islam's holiest celebrations. Animal sacrifices, prayers, charitable giving, family meals. Significant cultural event throughout the islands.
Not a scheduled event but traditional multi-day wedding ceremonies occur regularly. Elaborate celebrations with hundreds of guests, traditional dress, music, dancing. Sometimes visitors can observe with local invitation.
Plan Your Perfect Comoros Trip
Get our complete seasonal guide with detailed packing lists, event calendars, and month-by-month planning tips.
Download Weather Guide