SeasonMapNosy Be weather by month
Madagascar
The best time to visit Nosy Be is June to August — 94/100 in July, 29°C and 11 rainy days. The best season is the dry season, April to November (87/100 on average).
The worst month is January at 58/100 — sweltering, soaked, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Madagascar →
Nosy Be, month by month
Comfort score out of 100 for the kind of trip Nosy Be is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 58 | D | 31°C | 29 d | 8 h | Busy | 3 |
| FebFebruary | 62 | C | 31°C | 26 d | 9 h | Quiet | 2 |
| MarMarch | 60 | C | 31°C | 28 d | 9 h | Quiet | 2 |
| AprApril | 79 | B | 32°C | 25 d | 11 h | Shoulder | — |
| MayMay | 87 | A | 31°C | 15 d | 11 h | Peak | 2 |
| JunJune | 92 | S | 30°C | 12 d | 10 h | Peak | 2 |
| JulJuly | 94 | S | 29°C | 11 d | 10 h | Busy | 2 |
| AugAugust | 91 | S | 29°C | 16 d | 11 h | Busy | 2 |
| SepSeptember | 89 | A | 30°C | 19 d | 11 h | Busy | 3 |
| OctOctober | 84 | A | 31°C | 21 d | 11 h | Busy | 2 |
| NovNovember | 76 | B | 31°C | 26 d | 11 h | Busy | 2 |
| DecDecember | 68 | C | 31°C | 29 d | 11 h | Busy | 4 |
What's on in Nosy Be through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
- May
- Festival Donia20 May – 15 Jun (usually)Festival
- The dry season1 May – 15 Nov (usually)Season
- July
- Humpback whales1 Jul – 30 Sep (usually)Nature
- September
- Whale sharks1 Sep – 15 Dec (usually)Nature
- December
- Festive season peak15 Dec – 10 Jan (usually)Holiday
- Cyclone season15 Dec – 31 Mar (usually)Hazard
- The hot, wet months1 Dec – 31 Mar (usually)Season
Crowds in Nosy Be in July
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.
BusyThe dry season, school holidays in 5 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet