Climate & Weather Guide in Benin

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

Benin has a hot tropical climate with a clear north-south gradient: the coast and south are humid and rainy, while the north is drier with a longer dry season. Recent climate summaries describe the country as warm to hot all year, with average annual temperatures around 27-28 C in the latest period and a modest warming trend over recent decades. The rainy season generally runs from roughly May to October in the north, while the south has a more complex pattern with a short mid-year dry spell. For residents and expats, the main practical issues are heat, seasonal humidity, and strong wet-season downpours, especially in the south and coastal belt.

Summer Average

27-33°C

Winter Average

24-29°C

Climate Types

Tropical savanna and Semi-arid

Annual Rainfall

500-1500 mm

Sunshine Hours

2,400-3,000 hrs/yr

Average Humidity

60-85%

Regional Climate Variations

Coastal Strip and Southern Lagoons

This narrow southern belt along the Gulf of Guinea is the most humid part of Benin, with very warm temperatures, frequent cloud cover in the rainy months, and a pronounced coastal wet season. The coast has two rainy peaks separated by a short dry spell, and annual rainfall is typically around 1,000-1,300 mm, making it the dampest and most humid zone for daily life. Sea breezes reduce extremes slightly, but heat, humidity, and heavy showers remain common.

Summer:27-31°C

Winter:25-28°C

High rainfall

Hot, humid, and often sticky, with lush vegetation, heavy downpours, and a strong sense of tropical coastal weather.

Central Plateau and Southern Interior

The central and southern interior is warm year-round and slightly less humid than the coast, but it still receives substantial rainfall and experiences a distinct wet season. This zone typically feels hot by day, with intense sunshine between rains and higher humidity during the monsoon months. It is a practical middle ground for people who want the benefits of a tropical climate without the strongest coastal moisture, though drainage and road conditions can worsen quickly in the rainy season.

Summer:28-33°C

Winter:23-27°C

High rainfall

Warm and seasonally wet, with bright dry-season weather and heavy but manageable monsoon rains.

Northern Savannas and Far North

Northern Benin is hotter and drier than the south, with a longer dry season, a shorter rainy season, and a stronger harmattan influence in the cooler months. Climate references describe the far north as semi-arid to sub-humid dry, with rainfall often below 1,000 mm and temperatures that can peak sharply before the rains arrive. This is the best zone if you prefer a drier climate and less persistent humidity, though dust, heat, and water stress are more noticeable here.

Summer:30-36°C

Winter:21-26°C

Moderate rainfall

Hot, drier, and more open, with a long dry season, dusty harmattan winds, and sharper seasonal contrasts.

Benin’s climate is broadly tropical, but it varies meaningfully from the humid coast and south to the drier northern savannas, so residents should expect different levels of heat, rainfall, and humidity depending on location. For expats, the coast offers more greenery and maritime influence, while the north is better for those who prefer a less humid, more seasonal climate, though both areas remain hot through most of the year.

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