SeasonMapNosy Be weather in December
Madagascar
December in Nosy Be: sweltering, soaked, with clean air — fine if you can take 29 rainy days.
#9 of 12 months in Nosy Be · #767 of 1383 destinations to visit in December · comfort 68/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nosy Be in December
Other months in Nosy Be
Nosy Be's forum calls June one of the cooler, drier months in Madagascar — regulars say the water is swimmable but comfort varies by how used you are to warmer seas, since it's noticeably less balmy than the peak of summer. It also marks the start of the island's high season, so booking ahead is worth it.
Add your own note from Nosy Be's card on the map.
Nosy Be climate normals — December
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Feels like (high) | 37°C / 99°F | |
| Sea temperature | 31°C / 88°F | ♨️ bath-warm |
| Rainfall | 272 mm / 10.7 in | ⛈ soaked |
| Rainy days | 29 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 10.8 h/day | |
| Daylight | 12.9 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 23 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Nosy Be 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.
BusyFestive season peak, school holidays in 5 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Nosy Be'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 weatherNosy Be's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Nosy Be in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Whale sharks
1 Sep – 15 Dec · usuallyDive seasonWhale sharks feed off the north of the island through the last quarter of the year, thickest in October and November. Swimming with them is regulated and the operators mostly keep to the code.
- Season
The hot, wet months
1 Dec – 31 Mar · usuallyMonsoonClosuresHeavy afternoon rain, dive visibility down and a good share of the smaller hotels closed until after Easter. What stays open is the cheapest it gets.
- Hazard
Cyclone season
15 Dec – 31 Mar · usuallyThe north-west takes fewer direct hits than Madagascar's east coast, but a system passing offshore is enough to ground the boats and shut the airport at Fascene for a day or two. Source ↗
- Holiday
Festive season peak
15 Dec – 10 Jan · usuallyChristmas & New YearCrowdedBook earlyRéunion and the mainland come over for the holidays and the flights into Fascene fill up. It falls in the middle of the wet months, so you pay the year's top rate for the year's worst weather. Source ↗
- Season
Wet season
MonsoonRisk29 rainy days and about 272 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Where is Nosy Be?
Nosy Be in December — FAQ
- Is December a good time to visit Nosy Be?
- December in Nosy Be: sweltering, soaked, with clean air — fine if you can take 29 rainy days. It ranks #9 of 12 months for Nosy Be on SeasonMap's comfort score (68/100).
- What is the weather like in Nosy Be in December?
- In December, Nosy Be averages a daily high of 31.3°C and a low of 23°C, with about 271.8 mm of rain over roughly 28.7 rainy days.
- What is the air quality in Nosy Be in December?
- Nosy Be has a mean US Air Quality Index of about 23 in December.