Climate and monthly weather forecast
Antisiranana, Madagascar


The climate of Antisiranana

Antisiranana, a port city lying in the northern part of Madagascar, takes pride in its tropical savanna climate, scientifically known as the Aw climate under the Köppen climate classification. In this coastal town, there are no significant fluctuations in temperature. A brilliantly spread warmth is enjoyed throughout the year, with average high temperatures oscillating from 28.7°C to 31.5°C.

Although there is little variability in temperature, the amount of rainfall encountered in Antisiranana changes quite noticeably throughout the year. It has twofold characteristics: incredibly wet and pronouncedly dry. It culminates in January, distributing an average precipitation of 338mm and decelerates to a mere 9mm by September. Moreover, the city witnesses a gradual increase in precipitation, beginning from September until it peaks again in January.

The city experiences sunshine varying from 6.1 hours per day in February to 9.9 hours per day in October. The daylight hours are somewhat stable, with the shortest daylight of 11.4 hours in June and the longest of 12.8 hours in January. Notably, the UV index remains high at 12 from January to March and from October to December, indicating a need for protection against skin damage.

The best time to visit Antisiranana

The optimum time for tourists to explore Antisiranana would be the period between May to October. Warm temperatures are the norm during these months, ranging from 29.3°C to 30.5°C, making it ideal for outdoor activities. More importantly, this period marks the lowered precipitation rates, from 13mm in May to 17mm in October, significantly reducing the probability of rain-spoiled plans. Furthermore, an increased amount of sunshine during these months allows visitors to make the most out of their daylight hours.

The worst time to visit Antisiranana

Journeying to Antisiranana during the start of the year, precisely between January and February, may not prove as enjoyable. This phase showcases the heaviest rainfall, measuring 338mm in January and 306mm in February. Despite the high temperatures of around 30.2°C, the frequent showers might inhibit outdoor exploration, making it less appealing for holiday activities.

Spring weather in Antisiranana

The spring in Antisiranana (March, April, May) greets citizens and visitors with a pleasant decline in rainfall and a warm temperature palette. The mercury levels dip gently from 30.6°C in March to 29.3°C in May. Concurrently, average rainfall drops sharply from 179mm to a mere 13mm, a relief from the previous month’s higher precipitation levels. Sunshine per day ascends gradually, providing more time for outdoor activities.

Summer weather in Antisiranana

The summer period in Antisiranana (June, July, August) exhibits a beneficent climate with moderately warm temperatures and infrequent rainy days. With high temperatures ranging from 28.7°C to 29.5°C, these months offer a calming retreat from the excessive heat. An average of rainless 4 days and a scarce rain volume of 19mm in June makes summer an ideal period for activities without weather-related disruptions.

Autumn weather in Antisiranana

Typically, autumn (September, October, November) introduces a slight increase in temperature and rainfall frequency. Average high temperature ranges from 29.5°C in September to 31.5°C in November encompass the warmth of these months. Simultaneously, the amount of rainfall sees an increase, starting from a minor 9mm in September to 55mm in November, subtly foreshadowing the oncoming wet season.

Winter weather in Antisiranana

The winter months (December, January, February) in Antisiranana are characterized by high tropical temperatures and abundant rainfall. The region heats up to a toasty 31.4°C in December before receding slightly to 30.2°C by February. However, rainfall peaks dramatically in this season, with an impressive 338mm in January. Visitors should come prepared for a combination of warmth and intense showers.

Weather in January

Antsiranana in January experiences temperatures reaching a peak of 30.2°C, marking it amongst the warmer months. There is ample rainfall, making the conditions a bit damp. The sea, however, provides a welcoming dip, with pleasant temperatures to cool off from the thermal heat. Weather in January »

Weather in February

February notices a slight decline in temperature, rainfall, and daylight hours, maintaining a moderate weather phase quite similar to January. The sporadic rain showers bring a bit of relief from the warm temperatures throughout the month. Weather in February »

Weather in March

By the time March arrives, Antsiranana starts experiencing a subtle transition marked by a small increase in temperature to 30.6°C. The weather patterns shift noticeably, exhibiting a significant reduction in rainfall. It has lengthier daily sunshine hours, promoting a favorable atmosphere for outdoor explorations. Weather in March »

Weather in April

April marks a more definitive departure from the rainy season, with a remarkable decrease in rainfall down to 52mm. Concurrently, Antsiranana experiences a subtle drop in temperature but it is still generally warm. The city gains an hour of sunlight, giving more time for sightseers and locals to venture outdoors. Weather in April »

Weather in May

May in Antsiranana witnesses a noticeable change in weather patterns. There is a decline in temperature, most significantly in the lower bracket. A sharp decrease in rainfall contrastingly indicates a transition towards the drier months of the year. Weather in May »

Weather in June

June brings around cooler temperatures, indicating the arrival of winter. The earlier months' trend of declining rainfall continues, maintaining the city quite dry. Sea temperatures further drop to 27°C, making water activities slightly brisk. Weather in June »

Weather in July

July, the heart of the winter season, exhibits the year's lowest temperatures, dipping to 19.6°C at night. Despite the low rainfall, the city experiences an overall lower number of sunlit hours. The surrounding sea, matching city temperatures, experiences a cooling effect. Weather in July »

Weather in August

In August, Antsiranana's weather continues to mirror July's patterns, emphasizing a sustained dip in temperature. The consistently low rainfall numbers carry over to this month, highlighting the dryness of the season. Despite the chilliness of the sea, it remains popular among the adventure-seekers. Weather in August »

Weather in September

September heralds the arrival of spring in Antsiranana with temperatures climbing back up to around 29.5°C. The amount of rainfall remains low and continues to support outdoor activities. The sea finds itself warming up in response to the increased sunlight. Weather in September »

Weather in October

October in Antsiranana marks further rise in temperatures as the city moves deeper into the transition season. Rainfall is still comparatively low, contributing to the maintained dry conditions. The sea temperature continues to rise, luring back visitors to its blue expanse. Weather in October »

Weather in November

November signifies the beginning of warmer temperatures, with the mercury reaching an average of 31.5°C, setting the stage for the summer season. A noticeable increase in rainfall figures indicate the city's movement towards a wetter phase. Weather in November »

Weather in December

In December, temperatures in Antsiranana begin to stabilize around average highs of 31.4°C. The city witnesses a sharp spike in rainfall, a clear indication of the onset of the wet season. Despite the heavy showers, the sea remains inviting with its warm temperatures. Weather in December »


What is the wettest month in Antisiranana?

January is the month with the most rainfall in Antisiranana. Rain falls for 16 days and accumulates 338mm of precipitation.

How much does it rain in Antisiranana?

In Antisiranana, during the entire year, the rain falls for 84 days and collects up to 1197mm of precipitation.

What is the month with the least sunshine in Antisiranana?

The months with the least sunshine in Antisiranana, Madagascar, are January and February, with an average of 6.1h of sunshine.

When is the highest UV index in Antisiranana?

The months with the highest UV index are January through April, September through December, with an average maximum UV index of 12.

What months are the sea warmest in Antisiranana?

The months with the warmest seawater are February and March, with an average sea temperature of 29°C.

What is the month with the shortest days in Antisiranana?

With an average of 11h and 24min of daylight, June has the shortest days of the year in Antisiranana.

What is the month with the lowest UV index in Antisiranana?

June is the month with the lowest UV index, with an average maximum UV index of 8.

What month is the coldest in Antisiranana?

Antisiranana witnesses its lowest temperatures during July and August, when the average high-temperature reaches 28.7°C.

When is the sea coldest in Antisiranana?

August and September, with an average sea temperature of 25°C, are months with the coldest seawater in Antisiranana.

What is the driest month in Antisiranana?

September is the month with the least rainfall in Antisiranana. Rain falls for 2 days and accumulates 9mm of precipitation.

What month has the most sunshine in Antisiranana?

The month with the most sunshine in Antisiranana, Madagascar, is October, with an average of 9.9h of sunshine.

What is the warmest month in Antisiranana?

Antisiranana's warmest weather arrives in November, when temperatures average a high of 31.5°C and a low of 22.5°C.

When are the longest days in Antisiranana?

December has the longest days of the year in Antisiranana, Madagascar, with an average of 12h and 48min of daylight.

Is there Daylight Saving Time (DST) in Antisiranana?

Antisiranana does not observe Daylight Saving Time (DST). EAT timezone is used throughout the entire year.

Average temperature
Antisiranana, Madagascar

Average temperature - Antisiranana, Madagascar

The warmest month (with the highest average high temperature) is November (31.5°C).
The months with the lowest average high temperature are July and August (28.7°C).

The months with the highest average low temperature are March and December (22.9°C).
The coldest month (with the lowest average low temperature) is August (19.4°C).


Average rainfall
Antisiranana, Madagascar

Average rainfall - Antisiranana, Madagascar

The wettest month (with the highest rainfall) is January (337.5mm).
The driest month (with the least rainfall) is September (8.8mm).


Average rainfall days
Antisiranana, Madagascar

Average rainfall days - Antisiranana, Madagascar

The month with the highest number of rainy days is January (16 days).
The month with the least rainy days is September (2 days).


Average sea temperature
Antisiranana, Madagascar

Average sea temperature - Antisiranana, Madagascar

The best months for swimming (with the highest average sea temperature) are February and March (29°C).
The coldest months (with the lowest average sea temperature) are August and September (25°C).


Average daylight / Average sunshine
Antisiranana, Madagascar

Average daylight / Average sunshine - Antisiranana, Madagascar

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 24min).

The month with the most sunshine is October (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 6h and 6min).


Average UV index
Antisiranana, Madagascar

Average UV index - Antisiranana, Madagascar

The months with the highest UV index are January, February, March, April, September, October, November and December (UV index 12).
The month with the lowest UV index is June (UV index 8).


Antisiranana, Madagascar

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