Guinea Bissau Weather & Climate Guide 2025
Plan your trip with detailed weather information and seasonal tips for Guinea Bissau.
Guinea Bissau offers pristine beaches, unique wildlife, and the stunning Bijagos Archipelago. This West African gem features 88 islands, saltwater hippos, and vibrant Creole culture, making it one of Africa's most untouched destinations.
Best Time to Visit
Best Months
November to May (dry season)
Months to Avoid
July to September (rainy season)
Climate Overview
Guinea Bissau has a tropical savanna climate with two distinct seasons: a dry season from November to May dominated by the hot, dusty Harmattan wind blowing from the Sahara, and a rainy season from June to October when the southwest monsoon brings heavy downpours. Temperatures remain warm year-round, ranging from 24°C at night to 35-40°C at the peak of the dry season. Coastal and island areas benefit from Atlantic breezes that moderate the heat significantly, while the interior experiences more extreme temperatures.
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
Mar-May
Late dry season transitioning to rains. March and April are the hottest months with temperatures reaching 38-40°C. Low humidity and strong sunshine. Some years see early rain showers in May.
☀️ Summer
Jun-Aug
Peak rainy season with daily afternoon and evening downpours. Humidity very high, roads deteriorate, boat crossings can be rough or cancelled. Green and lush but challenging for travel, especially to islands and rural areas.
🍂 Fall
Sep-Nov
Transitional period as rains taper off from October. Vegetation intensely green, rivers full, bird migration peaks in November. October-November increasingly popular as the landscape is beautiful and crowds are minimal.
❄️ Winter
Dec-Feb
Peak dry season with the Harmattan wind bringing hazy skies but comfortable temperatures of 22-30°C. Best period for all outdoor activities including wildlife, beaches, and national parks. Calm seas for island crossings.
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
Nov-Apr (dry season when conditions are best for travel and wildlife)
Higher prices, advance booking essential, crowded attractions.
🟡 Shoulder Season
Oct, May (transitional months with decent conditions and fewer visitors)
Good balance of weather and crowds. Reasonable prices.
🟢 Low Season
Jun-Sep (rainy season - difficult conditions, minimal tourist infrastructure)
Best deals, fewer tourists. Some services may be limited.
Major Events & Holidays
Colorful street celebrations in Bissau with parades, music, dancing, and costumes. Shows Brazilian and Portuguese influence. Main parade on Avenida Amilcar Cabral. Biggest celebration of the year.
National holiday celebrating independence from Portugal (1973). Official ceremonies, military parades, cultural performances, and festivities throughout country. Prideful patriotic atmosphere.
Traditional Bijago coming-of-age ceremonies on islands. Multi-week celebrations with dancing, masks, and rituals. Outsider access limited but incredibly unique cultural event. Not fixed schedule.
Major Islamic festival celebrated by Fula and other Muslim communities. Sheep sacrifices, family feasts, prayers. Important in Gabu and Muslim regions.
Christian celebration blending Portuguese Catholic traditions with African customs. Church services, family gatherings, special meals. Major holiday for Christian population.
Commemorates 1959 Pidjiguiti massacre marking beginning of independence struggle. Solemn remembrance ceremonies and historical reflections. Important national remembrance.
Plan Your Perfect Guinea Bissau Trip
Get our complete seasonal guide with detailed packing lists, event calendars, and month-by-month planning tips.
Download Weather Guide