Littoral, Benin · population 780,000 · 12 weather stations within 200 km · records 1829 to 2025
Cotonou has an average annual daytime high of 30.8°C, based on the 1951 to 1980 baseline. Its warmest month is March, when highs typically reach 32.7°C, and its coldest is August, with overnight lows near 22.4°C.
These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.
Since 1900, Cotonou's average temperature has risen by +1.6°C. Compared to the earliest station records that begin in 1829, warming totals +1.7°C.
20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.
Daytime highs sit within a comfortable 15°C to 26°C range.
Cotonou's average annual daytime high is 30.8°C, based on the 1951 to 1980 baseline period. The warmest month is March, with highs averaging 32.7°C, and the coldest is August, with lows averaging 22.4°C.
March is the warmest month in Cotonou, with typical daytime highs of 32.7°C.
2023 is the hottest year on record for Cotonou, running +1.4°C above the 1951 to 1980 baseline.
Yes. Since 1900, Cotonou has warmed by roughly +1.6°C.
any time of year typically offers the most comfortable daytime highs, in the 15°C to 26°C range.
Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.