May marks the start of the main rainy season in much of Benin-heavy afternoon and evening showers are common, and some rural roads may become difficult. Mosquito activity increases and humidity stays high.
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Temperature map
-30°-20°-10°0°10°20°30°40°
Average temperature across Benin in May.
Where to Go in Benin in May
Coastal & Littoral
Cotonou, Porto‑Novo, Grand‑Popo, Ganvié
May sees frequent, sometimes prolonged downpours that keep humidity high and temperatures in the high 20s-low 30s°C; the rain is at its main‑season intensity, especially in late afternoons. Urban flooding in Cotonou and Porto‑Novo becomes a practical concern - expect blocked drains and waterlogged streets after intense storms. This is a quieter month for tourists, so accommodation is easier to find, but pack waterproof footwear and avoid scheduling tight intercity connections.
Central Plateau & Collines
Abomey, Bohicon, Dassa‑Zoumé, Cové
May brings steady rains that make the central plateau noticeably cooler and intensely green; waterfalls and small cascades around Dassa‑Zoumé pick up flow. Travel can be slower because smaller roads turn sloppy, and some remote sites may be less accessible; guided tours into rural areas are advisable. Mosquitoes increase markedly, so long sleeves, repellent and insect‑protected sleeping arrangements are important.
Atakora Highlands & Pendjari
Natitingou, Atakora Mountains, Pendjari National Park
May plunges the Atakora into the heart of the wet season; persistent rains and cloud cover make trails muddy, and visibility can be limited on the higher slopes. Pendjari’s vegetation thickens and smaller roads off the main park routes can become impassable - guided game drives may be curtailed to drier sections. Travelers seeking solitude will find fewer tourists and lush scenery, but pack waterproof gear and expect changes to game‑drive schedules.
Northern Plains & Niger Valley
Kandi, Malanville, Karimama, and the Niger border
May marks the start of the single northern rainy season; storms become more frequent and the countryside rapidly greens as fields fill with water. Roads across floodplains can deteriorate quickly after heavy rain, making rural travel more difficult; ferry crossings on the Niger may be affected by rising flows. For visiting river communities expect more local activity around planting and fishing, and keep waterproof footwear handy.
Events & Festivals in May
There are no major festivals or events in Benin during May to be aware of.
Planning a trip to Benin?
See how May compares with the rest of the year, then read the full guide.
