Mamoudzou weather in September
September in Mamoudzou: hot, dry, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#2 of 12 months in Mamoudzou · #90 of 1413 destinations to visit in September · comfort 93/100 (tier S)
- Days
- 26°C
- Nights
- 24°C
- Wet days
- 4
- Sun
- 11.2 h
- Humidity
- 76%
- Daylight
- 12 h

Traveller notes on Mamoudzou in September
Forum coverage specific to Mamoudzou's September weather is thin, with most forum activity centered on general trip planning, accommodation and diving logistics rather than granular climate detail. Mayotte sits within the same Indian Ocean seasonal pattern as nearby Madagascar and the Comoros, where the austral winter months (roughly May through October) bring a notably drier, cooler stretch than the hot, wet December-to-March cyclone season - September sits comfortably within that drier window. Given the limited detailed trip reports available, travelers planning a September visit should expect the general pattern of a Southern Hemisphere dry season to hold, with real specifics best confirmed closer to travel dates given how few firsthand accounts exist for this destination.
Other months in Mamoudzou
There's no Mamoudzou-specific forum thread for March, so this leans on the wider Indian Ocean region's pattern rather than a direct traveler account: neighboring islands like Mauritius and Madagascar describe March as hot, humid and genuinely wet, squarely inside the cyclone-season window for this part of the ocean. Mayotte's own climate record fits that regional pattern - warm, rainy, and humid rather than dry - though the destination's own numbers suggest a bit less total rainfall than some of its more exposed neighbors see this time of year.
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Mamoudzou climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Mamoudzou in September
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.
Busyschool holidays in 2 of the markets that fill it, one of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Mamoudzou'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).
Best weatherMamoudzou's weather peaks August–October.
September includes Humpback whales in the lagoon.
Best weatherFair weatherToughest weather
What's on in Mamoudzou in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Humpback whales in the lagoon
1 Jul – 31 Oct · usuallyWhale seasonHumpbacks come up from Antarctic waters to calve inside Mayotte's lagoon, the largest double-barrier lagoon in the world, from around July to October. Most sightings are a mother and calf in shallow, sheltered water rather than a breaching adult.
Where is Mamoudzou?
Mamoudzou in September — FAQ
- Is September a good time to visit Mamoudzou?
- September in Mamoudzou: hot, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Mamoudzou on SeasonMap's comfort score (93/100).
- What is the weather like in Mamoudzou in September?
- In September, Mamoudzou averages a daily high of 26.3°C and a low of 23.8°C, with about 11.5 mm of rain over roughly 4.3 rainy days.
- What is the air quality in Mamoudzou in September?
- Mamoudzou has a mean US Air Quality Index of about 27 in September.