SeasonScore
Cotonou, Benin
Photo: MVN · CC BY 2.0

Benin

Cotonou in May

🌧️ Rainy season

Warm, humid and often rainy.

🎒 Pack: light, breathable clothes & sunscreen · compact umbrella or rain jacket · quick-dry fabrics

Best months: Aug (8.7), Dec (8.4), Nov (8.3)

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Why May scores 7.7What goes into the score

How it works
🌡️ 31° / 25°C🌧️ 213 mm💧 dew pt 25°🍃 PM2.5 9
  • Weather comfort6.3
    • ✓Warm (31°C highs / 25°C lows)
    • !Very humid/sticky (dew point 24.8°C)
    • !Wet: ~213 mm rain, ~5 heavy-rain days
  • Air quality9.3
    • ✓Good (within WHO guideline) (PM2.5 ~9 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline6.5
    • ·Increased caution
Compare monthsPut May side by side with another month
MayAug
Score7.7 Very good8.7 Excellent
Season🌧️ Rainy season☀️ Dry season
High / low31° / 25°28° / 24°
Rain213 mm39 mm
Humiditydew pt 25°dew pt 23°
PM2.59 µg/m³11 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Cotonou weather-station normals. Rainfall: Cotonou weather-station normals (national met service).

Holidays & crowdsMay 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Eid al-Adha 15–17 May · 3 days off in a row

Other public holidays: Labor Day (1 May) · Ascension Day (6 May)

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore CotonouEvents, sights, food & souvenirs

Check event dates locally

Cotonou is Benin's largest city and economic centre, a busy port on the coast between the Atlantic and Lake Nokoué. Travellers come for its markets and as a base for Ouidah, Ganvié and Porto-Novo, the heartland of Vodun culture and slave-trade history.

Events in May

No major events on our calendar for May.

Coming up later

Independence DayEvery year1 August every year

A national holiday marking independence from France in 1960.

Why go: Offices close and there are official ceremonies.

Where: Nationwide

Fête du Vodoun (Vodun Day)Every year10 January every year

A national holiday celebrating Vodun religion with ceremonies, dances and masked performers.

Why go: Ouidah gets very busy; book transport and rooms early, and celebrations may run over several days.

Where: Nationwide, with the main celebrations on the beach at Ouidah