The temperatures in Cotonou during May are extremely high, between 27°C and hot as 32°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of May in Cotonou. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Cotonou in May 2025.
If you’re planning to visit Cotonou in the near future, we highly recommend that you review the 14 day weather forecast for Cotonou before you arrive.