worldweather

Weather in Cotonou - 14-day forecast

Detailed weather forecast for Cotonou, Benin: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Cotonou
today🌧️ 28°💧 1.5 mm
Sun🌧️ 26°💧 0.1 mm
Mon🌧️ 27°💧 0.6 mm
Tue🌧️ 25°💧 0.2 mm
Wed🌧️ 26°💧 1 mm
Thu🌧️ 27°💧 0.4 mm
Fri🌧️ 27°💧 0.6 mm
Sat🌧️ 27°💧 0.1 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Tuesday 8 Sept in Cotonou, the forecast high is 25°C. Typical daytime temperatures at this time of year range from 27°C to 28°C, so it will be exceptionally cool. It is cooler than 98% of similar days.

28°Cnear normal
usually 27°C–28°C
night: exceptionally warm rain: less rain than usual wind: stronger than usual
26°Cexceptionally cool
usually 27°C–28°C
cooler than 91% of similar days
night: exceptionally warm rain: exceptionally dry wind: exceptionally strong
27°Ccooler than usual
usually 27°C–28°C
cooler than 85% of similar days
night: exceptionally warm rain: exceptionally dry wind: exceptionally strong
25°Cexceptionally cool
usually 27°C–28°C
cooler than 98% of similar days
night: exceptionally warm rain: exceptionally dry wind: typical
26°Cexceptionally cool
usually 27°C–28°C
cooler than 95% of similar days
night: exceptionally warm rain: less rain than usual wind: stronger than usual
27°Ccooler than usual
usually 27°C–28°C
cooler than 79% of similar days
night: exceptionally warm rain: exceptionally dry wind: exceptionally strong
27°Ccooler than usual
usually 27°C–28°C
cooler than 77% of similar days
night: exceptionally warm rain: exceptionally dry wind: exceptionally strong

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
20°28°35° 1981: 27°C1982: 26°C1983: 28°C1984: 28°C1985: 26°C1986: 27°C1987: 27°C1988: 27°C1989: 27°C1990: 28°C1991: 28°C1992: 28°C1993: 27°C1994: 27°C1995: 28°C1996: 28°C1997: 28°C1998: 28°C1999: 27°C2000: 27°C2001: 28°C2002: 27°C2003: 27°C2004: 28°C2005: 28°C2006: 27°C2007: 27°C2008: 27°C2009: 27°C2010: 27°C2011: 28°C2012: 28°C2013: 27°C2014: 27°C2015: 28°C2016: 28°C2017: 28°C2018: 27°C2019: 28°C2020: 28°C2021: 28°C2022: 28°C2023: 28°C2024: 28°C2025: 28°C 2026 forecast: 27°C current forecast 27°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 27°C by day. The coolest year was 1985 (26°C) and the warmest was 1998 (28°C). The current forecast averages 27°C - lower than in 96% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Cotonou

Cotonou - 14-day weather forecast infographic

Cotonou 30 & 45-day weather - long-range outlook

Next 16 days · forecast
27°
around 25° at night · days with rain: 2
Weeks 3-4 · avg for September
29°
around 24° at night · rain chance 48%
Weeks 5-7 · avg for October
30°
around 25° at night · rain chance 37%
The 30 & 45-day outlook for Cotonou: the next 16 days are a numerical forecast updated daily - on average 27° by day and 25° at night. Further out we rely on multi-year climate averages: around 29° in September, and about 30° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Cotonou

Saturday5 September 2026
🌧️28°light rain
sunrise 06:43 · sunset 18:55 · night 25° · evening 26° · rain 1.5 mm · humidity 76% · wind 6 m/s · clouds 47%
Sunday6 September 2026
🌧️26°light rain
sunrise 06:43 · sunset 18:55 · night 25° · evening 26° · rain 0.11 mm · humidity 80% · wind 7 m/s · clouds 100%
Monday7 September 2026
🌧️27°light rain
sunrise 06:42 · sunset 18:54 · night 25° · evening 26° · rain 0.55 mm · humidity 77% · wind 6 m/s · clouds 95%
Tuesday8 September 2026
🌧️25°light rain
sunrise 06:42 · sunset 18:54 · night 25° · evening 25° · rain 0.21 mm · humidity 85% · wind 5 m/s · clouds 100%
Wednesday9 September 2026
🌧️26°light rain
sunrise 06:42 · sunset 18:53 · night 25° · evening 25° · rain 1.02 mm · humidity 80% · wind 6 m/s · clouds 99%
Thursday10 September 2026
🌧️27°light rain
sunrise 06:42 · sunset 18:53 · night 25° · evening 25° · rain 0.41 mm · humidity 76% · wind 7 m/s · clouds 95%
Friday11 September 2026
🌧️27°light rain
sunrise 06:42 · sunset 18:52 · night 25° · evening 25° · rain 0.57 mm · humidity 75% · wind 7 m/s · clouds 100%
Saturday12 September 2026
🌧️27°light rain
sunrise 06:41 · sunset 18:52 · night 25° · evening 26° · rain 0.14 mm · humidity 73% · wind 7 m/s · clouds 95%
Sunday13 September 2026
🌧️27°light rain
sunrise 06:41 · sunset 18:51 · night 25° · evening 25° · rain 0.97 mm · humidity 74% · wind 6 m/s · clouds 100%
Monday14 September 2026
🌧️26°light rain
sunrise 06:41 · sunset 18:51 · night 25° · evening 26° · rain 0.24 mm · humidity 75% · wind 6 m/s · clouds 86%
Tuesday15 September 2026
☁️27°overcast clouds
sunrise 06:41 · sunset 18:50 · night 25° · evening 25° · rain 0.25 mm · humidity 74% · wind 6 m/s · clouds 87%
Wednesday16 September 2026
☁️27°overcast clouds
sunrise 06:41 · sunset 18:50 · night 25° · evening 25° · rain 0.14 mm · humidity 75% · wind 8 m/s · clouds 91%
Thursday17 September 2026
🌧️27°light rain
sunrise 06:41 · sunset 18:49 · night 25° · evening 25° · rain 0.25 mm · humidity 75% · wind 6 m/s · clouds 98%
Friday18 September 2026
☁️26°overcast clouds
sunrise 06:40 · sunset 18:49 · night 25° · evening 26° · rain 0.15 mm · humidity 77% · wind 7 m/s · clouds 100%
Saturday19 September 2026
🌧️26°light rain
sunrise 06:40 · sunset 18:48 · night 25° · evening 25° · rain 0.75 mm · humidity 78% · wind 6 m/s · clouds 94%
Sunday20 September 2026
☁️27°broken clouds
sunrise 06:40 · sunset 18:48 · night 25° · evening 25° · humidity 76% · wind 6 m/s · clouds 66%

UV index in Cotonou - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTCotonou03681111+8.5UV VERY HIGHtoday, daily maxSPF 50, long sleeves and shade between 10:00 and16:00.Unprotected fair skin may burn in about 25 min9Sat5.098Sun6.096Mon7.094Tue8.097Wed9.099Thu10.098Fri11.098Sat12.093Sun13.097Mon14.099Tue15.097Wed16.093Thu17.098Fri18.097Sat19.098Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Cotonou is 9 (very high) - unprotected fair skin can burn in about 25 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.

Sea temperature - Cotonou

Water today
27°C
Week avg
27°C
Waves today
1 m
How's the water?
very warm
16-day sea temperature forecast:
5.09 27°C6.09 27°C7.09 27°C8.09 27°C9.09 27°C10.09 27°C11.09 27°C12.09 27°C13.09 27°C
Average sea temperature through the year:
Jan 29°CFeb 29°CMar 29°CApr 30°CMay 30°CJun 29°CJul 27°CAug 26°CSep 27°COct 28°CNov 29°CDec 29°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Cotonou weather through the year

Cotonou - annual climate

Warmest, driest months on average: January, December.

Upcoming public holidays in Benin: Armed Forces Day — 26 October · All Saints' Day — 1 November · National Day — 30 November.

Nearby and related places

Porto-NovoOuidahCovèBohiconNatitingouAbomey

FAQ - Cotonou weather

What is the weather like in Cotonou today?
Today it is about 28° during the day and 25° at night, light rain.
How far ahead can I check the forecast for Cotonou?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.