Climate & Weather Guide in Guinea

Climate zones, seasonal temperatures, rainfall patterns, and best travel times

Guinea has a hot tropical climate with a strong wet season from roughly May to October and a drier season from November to March. The coast is much wetter and more humid than the interior, while the central highlands are somewhat cooler because of elevation. Most of the country falls into tropical monsoon and tropical savanna climate zones under Köppen classification, with rainfall and cloudiness increasing sharply toward the southwest coast. For residents and expats, the main practical issues are heat, high humidity in coastal areas, heavy seasonal rain, and road disruptions during the wet season.

Summer Average

27-33°C

Winter Average

22-27°C

Climate Types

Tropical monsoon and Tropical savanna and Subtropical highland

Annual Rainfall

1000-4300 mm

Sunshine Hours

2,200-2,800 hrs/yr

Average Humidity

60-85%

Regional Climate Variations

Atlantic Coast and Conakry Belt

This coastal strip is the wettest and most humid part of Guinea, shaped by Atlantic monsoon moisture and long rainy months. Conakry and nearby areas can receive very heavy rainfall, with the wet season bringing frequent downpours, high humidity, and cloudy skies. Temperatures stay warm year-round, but the sea breeze can make the heat more bearable than inland. For expats, this zone feels lush and tropical, but it also has the greatest risk of flooding, damp housing, and traffic disruptions during peak rains.

Summer:27-31°C

Winter:24-27°C

Very high rainfall

Hot, very humid, and rain-soaked for much of the year, with a distinctly monsoon feel and frequent heavy showers in the wet season.

Middle Guinea Highlands

The Fouta Djallon and surrounding central highlands are cooler and less oppressive than the coast, thanks to elevation. Rain still falls strongly in the wet season, but temperatures are more comfortable, especially at night, and the daily range is larger. This is one of the more pleasant regions for people who want to avoid constant coastal humidity while staying in a tropical country. The climate is still seasonal, with green hills during rains and a drier, dustier feel in the dry months.

Summer:24-29°C

Winter:18-24°C

High rainfall

Milder by Guinean standards, with warm days, cooler nights, and a fresher feel than the lowlands, especially in the highland dry season.

Upper Guinea Interior

The eastern and northeastern interior is generally hotter and drier than the coast and highlands, with a stronger contrast between the rainy season and the dry Harmattan-influenced months. Rainfall is lower than in western Guinea, but it is still enough to support savanna landscapes and seasonal agriculture. Heat is more noticeable here because there is less maritime influence and fewer high-elevation refuges. Expats should expect a more continental tropical feel, with dusty dry-season conditions and intense heat buildup in the afternoons.

Summer:30-35°C

Winter:22-26°C

Moderate rainfall

Hotter, drier, and more seasonally marked than the west, with a pronounced dry season and a strong late-spring to autumn wet season.

Guinea is a tropical country with a clear west-to-east and coast-to-inland climate gradient: very wet and humid on the Atlantic coast, cooler in the central highlands, and hotter and drier in the interior. For residents and expats, the most comfortable areas are often the highlands, while the coast offers the most lush setting but also the most intense rain, humidity, and flood risk.

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