Cotonou Weather in May
May in Cotonou sees daytime temperatures around 30°C (86°F) and lows of 26°C (79°F) at night. With around 176 mm (6.9 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Cotonou in May
On average, there are about 14 days with rain during this month, averaging 176 mm (6.9 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Cotonou in May
May in Cotonou brings very high temperatures, with highs of 30°C (86°F) and nights around 26°C (79°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights remain warm at around 26°C (79°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.
Sunshine in Cotonou in May
The city usually sees around 214 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Cotonou in May
In May, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.
Average water temperature in May
With water at 29°C (84°F), conditions are warm and calm. Perfect for those who like tropical water temperatures, though it won't cool you down much.If you prefer dry days with pleasant temperatures, May may not be the ideal month to visit Cotonou. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Benin, check out our Cotonou's climate page.
Cotonou Temperature in May
Min Temperature
26°C (79°F)
Max Temperature
30°C (86°F)
Water Temperature
29°C (84°F)
Chance of Rain
45%
Precipitation
176 mm (6.9 in)
Rainy days
14 days
Humidity
84%
Windspeed
4 m/s (8 knots)
Sunshine
214 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cotonou typically stay consistent throughout May, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Cotonou in May
Browse day-by-day weather records for Cotonou spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cotonou historical weather extremes in May
Based on 25 years of weather observations in Cotonou between 2001 and 2026, these are the recorded extremes.
- Cotonou recorded its highest May temperature of 37°C (99°F) on May 5, 2001.
- The coldest May day was on May 10, 2009, with a maximum of 27°C (81°F).
- The coldest night in May in Cotonou was on May 31, 2004, with a minimum of 21°C (70°F).
- The wettest May day on record brought 113 mm (4.4 in) of precipitation to Cotonou (May 11, 2013).
Best Places in Benin in May
Find out more about the weather in Benin and which places have the best travel conditions in this month. See all of Benin in May →
perfect weather
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unpleasant
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What to Wear in Cotonou in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Expect water temperatures of around 29°C (84°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Cotonou in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Benin, check out our Cotonou's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Cotonou climate overview or explore weather in Benin.
