02/11/2026
NOSY BE FROM OCTOBER TO FEBRUARY: UNDERSTANDING THE CLIMATE
Temperatures, rainfall, humidity and sea conditions: what should you really expect when visiting Nosy Be?
Located off the north-western coast of Madagascar, Nosy Be has a tropical climate characterised by a relatively dry season and a warm, rainy season. The period from October to February is particularly interesting because it marks a gradual transition towards hotter, more humid and wetter conditions.
Understanding these seasonal changes can help you plan excursions, wildlife experiences, boat transfers and days at the beach more effectively.
1. TEMPERATURES AND RAINFALL: MONTH-BY-MONTH DATA
Indicative average climate values based on available climatological data for Nosy Be.
Month Average minimum temperature Average maximum temperature Indicative monthly rainfall
October 22°C 32°C 30–90 mm
November 23°C 32°C 135–255 mm
December 24°C 32°C 300–435 mm
January 24°C 32°C 390–520 mm
February 24°C 32°C 330–340 mm
Methodological note: The rainfall ranges reflect differences between available climate datasets, which may use different observation periods and calculation methods. These figures are not forecasts for the current year.
2. OCTOBER: WARM, SUNNY AND GENERALLY FAVOURABLE
October generally marks the transition towards the wetter season.
Daytime temperatures can reach 30–32°C, while rainfall is usually relatively limited compared with the following months.
Conditions are often favourable for:
* Land-based excursions and cultural visits.
* Snorkelling and diving, depending on underwater visibility.
* Boat trips and visits to nearby islands.
* Wildlife observation in tropical forest habitats.
However, sea conditions and wind must always be assessed on a daily basis.
3. NOVEMBER: THE WEATHER BEGINS TO CHANGE
November generally brings increasing rainfall and atmospheric humidity.
Temperatures remain high, but thunderstorms and occasionally intense, short-lived downpours become more frequent.
A rainy day does not necessarily mean continuous rain or a completely disrupted itinerary. Rainfall distribution can vary considerably from one day to another.
For visitors to Nosy Be, maintaining some flexibility in excursion planning becomes a real advantage.
4. DECEMBER: HOT, HUMID AND LUSH
December generally marks the beginning of the wettest period.
Temperatures remain high, and humidity can make the heat feel more intense, particularly during physical activities around midday.
Tropical forests become increasingly lush, and the landscape can be especially rewarding from a naturalist’s perspective.
Nevertheless, visitors should be prepared for:
* Heavy showers.
* Muddy and slippery trails.
* Possible changes to land-based itineraries.
* Potential restrictions on boat excursions when weather conditions deteriorate.
5. JANUARY AND FEBRUARY: THE PEAK OF THE HOT, RAINY SEASON
January and February are generally characterised by high temperatures, substantial rainfall and persistently high humidity.
Temperatures may occasionally exceed average daytime highs, while heavy rain can occur alongside thunderstorms.
This period also coincides with an important part of the tropical cyclone season in the south-western Indian Ocean.
A cyclone does not necessarily affect Nosy Be every year, but the associated weather risk must be considered when planning transfers, marine activities and land-based excursions.
Whenever official weather warnings are issued, the instructions of local authorities and maritime operators must take precedence over any tourist itinerary.
6. WHAT ABOUT SEA TEMPERATURES?
Sea temperatures generally remain warm throughout this period.
Month Indicative average sea temperature
October 26–27°C
November 27–28°C
December 28–29°C
January Around 29°C
February Around 29°C
Warm water makes swimming and snorkelling comfortable, but it does not automatically guarantee excellent underwater visibility.
Rainfall can increase surface runoff and sediment transport into coastal waters. Wind, waves and currents also influence both the quality and safety of marine activities.
7. HOW TO PREPARE FOR YOUR TRIP
Regardless of the month you choose, we recommend bringing:
* Lightweight, breathable clothing.
* Sunscreen and a hat.
* Insect repellent.
* Footwear suitable for natural trails.
* A lightweight rain jacket and waterproof protection for electronic devices.
* Sufficient drinking water for excursions.
During the wetter months, keeping your itinerary flexible and checking the weather before each excursion are particularly important.
OUR RECOMMENDATION
Nosy Be can be visited throughout the year, but conditions vary significantly from one season to another.
October is generally a good choice for travellers looking for warm weather and relatively limited rainfall. From November to February, the likelihood of rain increases, while the vegetation becomes progressively greener and atmospheric humidity rises.
The best time to visit therefore depends on your priorities: beaches, diving, hiking, wildlife photography or cultural discovery.
At Except Mada Tour, we believe in providing realistic information and helping every traveller plan their stay according to actual conditions, rather than promising perfect weather in every season.
Except Mada Tour
Understanding the land is the first step towards truly discovering it.
