Cotonou weather in June
June in Cotonou: sweltering, soaked, with clean air — a gamble, with 25 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#12 of 12 months in Cotonou · #1166 of 1413 destinations to visit in June · comfort 56/100 (tier D)
- Days
- 30°C
- Nights
- 25°C
- Wet days
- 25
- Sun
- 8.1 h
- Humidity
- 85%
- Daylight
- 13 h

Traveller notes on Cotonou in June
Notes from nearby Lagos (108 km away)
Cotonou doesn't have its own notes for June yet — these are about Lagos, close enough to share the season.
Forum posters describe Lagos, Nigeria weather as usually hot and humid with tropical rain that arrives heavy rather than as a light drizzle, and one resort review specifically warns the property isn't well suited to a rainy-season visit given how operations there are affected once the rain sets in. Posters generally note temperatures well over 90F (32C+) under scorching sun as typical, with air conditioning genuinely valued indoors given how few outdoor spaces offer any relief. Given the limited destination-specific detail for June exactly, this note leans on that broader pattern: June sits within Lagos's rainy season, so expect frequent, heavy downpours layered on top of persistent heat and humidity, with indoor plans and flexible scheduling around storms the more reliable approach than counting on dry days.
Other months in Cotonou
Forum posters describe Benin's coast as having two rainy seasons, April through July and September through mid-October, both generally recommended to avoid given unstable weather and a rougher sea. Posters instead point to late December through mid-February as the better overall window for a Cotonou visit. Given July falls within the first of those two rainy stretches, posters' framing implies hot, humid conditions with substantial rain and choppier coastal waters typical of this part of the West African coast. Posters generally rate July as one of Cotonou's weaker weather windows, with the December-February dry stretch a clearly better-regarded alternative.
Forum posters describe the Harmattan winds - dry Saharan air carrying a lot of dust - as a defining feature of this stretch of the West African coast from roughly late December through mid-February, meaning January sits squarely within that hazy, dust-laden but comparatively dry window. Posters specifically flag February through April as the hottest months of the year here, implying January itself, while still warm and humid on the coast, runs a touch more moderate than the peak heat still to come. Posters generally recommend light, breathable clothing regardless of the Harmattan's dry-air reputation, since the dust itself - rather than rain - is the main practical annoyance travelers report for a January visit to Cotonou.
Add your own note from Cotonou's card on the map.
Cotonou climate normals — June
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Cotonou in June
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyNonvitcha in Grand-Popo, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Cotonou's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherCotonou's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Cotonou in June
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Rainy-season flooding
15 Apr – 31 Jul · usuallyFlood seasonThe long rains swamp Cotonou's low-lying districts and neighbouring Abomey-Calavi after heavy downpours, when drains overflow and whole streets sit under water for days. Allow extra time for any cross-town journey. Source ↗
- Festival
Nonvitcha in Grand-Popo
10 May – 15 Jun · usuallyMajor festivalCrowdedThe Xwla and Xweda communities gather in Grand-Popo, a day trip west along the coast, every Pentecost since 1923: a thanksgiving mass on Nonvitcha square, canoe and swimming races, dances and evening concerts. Source ↗
- Season
Wet season
MonsoonRisk25 rainy days and about 232 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Where is Cotonou?
Cotonou in June — FAQ
- Is June a good time to visit Cotonou?
- June in Cotonou: sweltering, soaked, with clean air — a gamble, with 25 rainy days. It ranks #12 of 12 months for Cotonou on SeasonMap's comfort score (56/100).
- What is the weather like in Cotonou in June?
- In June, Cotonou averages a daily high of 30°C and a low of 24.6°C, with about 231.7 mm of rain over roughly 25.4 rainy days.
- What is the air quality in Cotonou in June?
- Cotonou has a mean US Air Quality Index of about 42 in June.