Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 28.6 °C | 29.2 °C | 27 days | Unfavourable season |
| February | 28.7 °C | 29.4 °C | 25 days | Unfavourable season |
| March | 29.2 °C | 29.8 °C | 26 days | Unfavourable season |
| April | 29.2 °C | 29.8 °C | 20 days | Unfavourable season |
| May | 28.4 °C | 28.6 °C | 11 days | Ideal — one of the best times of year |
| June | 27.4 °C | 27.5 °C | 7 days | Ideal — one of the best times of year |
| July | 26.6 °C | 26.4 °C | 6 days | Ideal — one of the best times of year |
| August | 26.9 °C | 26.1 °C | 11 days | Ideal — one of the best times of year |
| September | 27.4 °C | 26.3 °C | 14 days | Possible, with trade-offs |
| October | 28.1 °C | 27.1 °C | 17 days | Possible, with trade-offs |
| November | 28.7 °C | 28.1 °C | 20 days | Unfavourable season |
| December | 29.1 °C | 29.2 °C | 23 days | Unfavourable season |
Before you go
Three things to check once you have picked your dates.
Entry
Mayotte is in the European Union. Entry rules depend on your nationality — check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 10 December 2025
Health
Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.
Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.
FAQ
Can you swim in Mamoudzou in June?
The sea averages 27.5°C in June — yes, pleasant swimming.
How hot is Mamoudzou in June?
Expect 27.4°C in the afternoon and 23.7°C at night, averaged over the last 10 years.
Does it rain a lot in Mamoudzou in June?
Around 7 days with rain (≥ 1 mm) in the month — 23% of days.