Atsinanana Climate

Last updated: January 18, 2025

The climate of Atsinanana, Madagascar, is characterized by a diverse range of thermal conditions, classified under the Köppen-Geiger classifications as Af (tropical rainforest) and Cfa (temperate humid continental). This region experiences a minimum temperature of 7°C (45°F) in August, while average temperatures hover around 23°C (74°F) throughout the year. The peak of warmth occurs in March, with maximum temperatures reaching a scorching 36°C (97°F). Such climatic variability not only shapes the local biodiversity but also influences agricultural practices and day-to-day life in this vibrant region.

Atsinanana temperature by month

In Atsinanana, Madagascar, temperature patterns reveal a distinct seasonal cycle marked by fluctuating minimums and maximums throughout the year. The warmest months are January through March, where temperatures consistently reach a maximum of 36°C (97°F), accompanied by average temperatures around 25°C (78°F). As the region transitions into the cooler months of April to August, both minimum and average temperatures gradually decline, with August recording the year's lowest minimum at 7°C (45°F) and consistent maximums of 28°C (83°F). This trend is followed by a slight warming in September to November, where minimums rise again, exhibiting averages of 24°C (76°F) and returning to maximums of 33°C (93°F). The climatic conditions of Atsinanana thus create a dynamic environment that oscillates between warm extremes and cooler seasons, shaping its ecological and agricultural landscapes.

Monthly Temperatures in Atsinanana, Madagascar

The chart illustrates Atsinanana's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec787877757370686870737577
Data source: Atsinanana temperature data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

Toamasina experiences a varied climate throughout the year, with temperatures ranging from a minimum of 19°C (67°F) in July to a maximum of 31°C (88°F) in February. For a detailed overview of the monthly temperatures, visit monthly temperatures in Toamasina.

Precipitation Patterns in Atsinanana

Atsinanana experiences a pronounced rainy season, particularly from January to March, characterized by significantly high precipitation levels. During this period, January records 239 mm (9.4 in) of rain, escalating to 255 mm (10.0 in) in February, and peaking at 429 mm (16.9 in) in March. This trio of months accounts for the majority of the region's annual rainfall, with frequent rainy days ranging from 20 to 27, creating a lush environment conducive to diverse flora and fauna. Following March, precipitation remains substantial but begins to taper off, with April still delivering 251 mm (9.9 in) over 26 days.

As the region progresses into the drier months from May to August, a notable shift occurs, with rainfall gradually decreasing. May sees 147 mm (5.8 in), while June and July report 172 mm (6.8 in) and 186 mm (7.3 in) respectively, bringing occasional showers to the area. By August, precipitation drops to a mere 93 mm (3.7 in), further continuing its downward trend in September and October. The transition into the late wet season occurs in November, when precipitation rises again to 126 mm (4.9 in), before December finishes the year with 219 mm (8.6 in), revitalizing the landscape as the cycle prepares to restart.

Monthly Average Precipitation in Atsinanana, Madagascar

The average monthly precipitation in Atsinanana, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec239255429251147172186938397126219
Data source: Atsinanana precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Sunshine Duration in Atsinanana

In Atsinanana, the duration of sunshine exhibits a clear seasonal trend characterized by an upward trajectory from the early part of the year into the summer months. Beginning with 278 hours of sunshine in January, the region experiences a gradual increase that coincides with the warmer, wetter season, peaking significantly in December with 360 hours. March stands out as a transitional month with 323 hours, indicating an extensive period of sunlight prior to the onset of the heavier rainfall in the latter part of the year. This steady climb in sunshine hours not only enhances the vibrancy of the landscape but also supports local agriculture by facilitating photosynthesis during critical growth periods.

As the year progresses, the sunshine duration reaches its zenith in the late spring and early summer months, particularly in October, which boasts an impressive 356 hours of sunlight. Following closely are November and December, both showing high levels of sunshine at 346 hours and 360 hours, respectively. The midsummer months of June and July maintain a robust tally of sunshine, although they dip slightly to 291 hours and 304 hours. This highlights a fascinating balance in the climate, where despite the rain, sunlight remains a prominent feature, fostering a dynamic ecosystem that thrives throughout the year.

Monthly Sunshine in Atsinanana, Madagascar

Monthly sunshine duration represents the total hours of direct sunlight Atsinanana receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec278h301h323h307h315h291h304h323h328h356h346h360h
Data source: Atsinanana sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Atsinanana UV Index Trends

The UV Index in Atsinanana, Madagascar, presents a noteworthy pattern that underscores the intense solar exposure experienced throughout the year. From January to March, the region consistently registers a UV Index of 17, categorized as extreme, necessitating meticulous sun protection due to a rapid burn time of just 10 minutes. As the months transition into April, the UV Index slightly drops to 13, although it remains within the extreme exposure category. This sustained high level of UV radiation highlights the need for vigilance against sunburn and long-term skin damage, especially during the peak summer months when sunlight is most potent.

As the year progresses into late spring and early summer, the UV Index gradually decreases but still reflects very high to extreme levels. By May, it drops to 10 and maintains that intensity through June and July, with values around 8 to 9; however, the burn time extends slightly to 15 minutes. Notably, August sees an uptick back to 11, followed by 13 in September and October, maintaining its extreme classification. As the year concludes, November and December bring a resurgence to 14 and 15, respectively, reaffirming the ongoing need for sun safety practices. This demonstrates that even in the transitional months, residents and visitors must remain attentive to high UV levels to mitigate health risks.

Monthly Maximum UV Index for Atsinanana, Madagascar

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Atsinanana. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec1717161310891113131415
Data source: Atsinanana UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Daylight Hours in Atsinanana

In Atsinanana, Madagascar, daylight duration fluctuates throughout the year, creating a dynamic rhythm that influences both daily life and the natural environment. The year begins with 13 hours of daylight in January, offering ample time for activities and growth as the region enjoys its warm summer weather. As the days progress into February and March, daylight eases slightly to 12 hours, marking a gradual transition that aligns with the onset of the wet season. This pattern continues into April and May, where daylight stabilizes at 11 hours, reflecting the shortening days typical of the cooler months.

As winter persists from June through August, daylight duration remains steady at 11 hours, creating a consistent atmosphere that is ideal for various ecological processes. The gradual return of longer days resumes in October and November, with daylight extending back to 12 hours, signifying the budding of warmer weather and preparation for the rainy season. By December, daylight reaches 13 hours again, completing the cycle and embracing the vibrancy of summer. This variation in daylight not only impacts ecological dynamics but also plays a crucial role in shaping local cultural practices and livelihoods throughout the year.

Average Monthly Daylight Hours in Atsinanana, Madagascar

This chart shows the total daylight hours Atsinanana receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec785h760h729h698h672h660h666h688h718h750h778h792h
Data source: Atsinanana daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Atsinanana's Popular Destinations

Toamasina, Madagascar, enjoys a tropical climate characterized by warm temperatures year-round. From January to March, temperatures range from 24-31°C (75-88°F), with significant rainfall peaking in March at 466 mm (18.4 in). The dry season from June to August sees cooler temperatures between 19-25°C (67-77°F) and reduced precipitation, especially in August with just 101 mm (4.0 in). The city benefits from ample sunshine, with October boasting the highest average of 362 hours. For more detailed information, visit Toamasina climate.

Conclusion

In summary, the climate of Atsinanana, Madagascar, is characterized by notable temperature variations, significant precipitation patterns, high UV exposure, and fluctuating daylight durations across the seasons. The region enjoys warm, sunny weather, particularly from January to March, which coincides with its peak rainy season, fostering a thriving ecosystem. As the year progresses, the interplay between sunshine and rainfall shapes agricultural practices and daily life, while high UV Index levels necessitate caution to protect against harmful solar radiation. The consistent daylight duration, spanning from 11 to 13 hours, supports vibrant biodiversity and enriches cultural activities, illustrating how climate intricacies influence both the environment and the experiences of those who inhabit this unique region.

Discover the Climate of Atsinanana's Places

A M T V