SeasonMapMoroni weather in December
Comoros
December in Moroni: hot, soaked, with clean air — fine if you can take 18 rainy days.
#9 of 12 months in Moroni · #489 of 1383 destinations to visit in December · comfort 79/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Moroni in December
No notes yet. Open Moroni on the map to add the first one.
Moroni climate normals — December
| Daytime high | 31°C / 88°F | 🥵 hot |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Sea temperature | 29°C / 85°F | ♨️ bath-warm |
| Rainfall | 156 mm / 6.1 in | ⛈ soaked |
| Rainy days | 18 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 11.6 h/day | |
| Daylight | 12.8 h | |
| Wind | 9 km/h / 6 mph | |
| Air quality (US AQI) | 28 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Moroni in December
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.
Shoulder seasonschool holidays in 5 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Moroni'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 weatherMoroni's weather peaks August–October, best around September.
Best weatherFair weatherToughest weather
What's on in Moroni in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Kashkazi stops the boats
1 Nov – 30 AprWind seasonClosuresRiskThe north-westerly monsoon puts a heavy swell into Moroni's open roadstead, where boats are still loaded by launch. Inter-island crossings to Mohéli and Anjouan are cancelled for days at a stretch.
- Hazard
Cyclone season
15 Nov – 30 AprThe south-west Indian Ocean season runs from mid-November to the end of April and peaks around January. Systems usually track south of the archipelago, but a close pass takes out power and the airport for days. Source ↗
Where is Moroni?
Moroni in December — FAQ
- Is December a good time to visit Moroni?
- December in Moroni: hot, soaked, with clean air — fine if you can take 18 rainy days. It ranks #9 of 12 months for Moroni on SeasonMap's comfort score (79/100).
- What is the weather like in Moroni in December?
- In December, Moroni averages a daily high of 31.3°C and a low of 26.7°C, with about 155.5 mm of rain over roughly 17.8 rainy days.
- What is the air quality in Moroni in December?
- Moroni has a mean US Air Quality Index of about 28 in December.