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Wild Costa Rica







































Costa Rica’s green season approaches



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Published on Wednesday, March 26, 2025.
By the A.M. Costa Rica staff





Get ready for rain, Costa Rica’s green season is on the horizon.



April will mark the transition from the dry season to the rainy season, also known as the green season, according to the Weather Institute.



Costa Rica’s climate is classified as tropical and subtropical, with two distinct seasons. The dry season, or summer, runs from December to April, while the rainy season extends from May to November, aligning closely with the Atlantic hurricane season.



Additionally, the weather phenomenon known as "Veranillo de San Juan," named after the nativity of John the Baptist, a Christian feast day observed on June 24, is expected to occur during the last week of June. This event, linked to the "Dog Days of Summer" in North America, typically brings drier conditions and sunnier days to much of the country.







The country’s tropical climate remains consistent year-round due to its location 12 degrees north of the Equator. However, the rainy season is influenced by the migration of the Intertropical Convergence Zone (ITCZ), a band of clouds and thunderstorms that encircles the globe near the Equator. This shift is caused by the changing position of the sun on Earth’s surface.



Costa Rica also features multiple microclimates, which vary based on altitude, rainfall, geology, and geography. However, higher elevations in the Central Mountain Range receive the most annual rainfall.



Experts predict rainfall will begin in different regions on the following dates:

  • Southern Pacific Coast (southern Puntarenas Province): April 20–25.


  • Central Valley (San José, Heredia, Cartago, southern Alajuela): April 22–May 1.


  • Central Pacific Coast (central and northern Puntarenas Province): April 25–May 3.


  • North Pacific Coast (Guanacaste Province): May 1–5.


  • Northern Zone (northern Alajuela): May 4–6.


  • Caribbean Coast (Limón Province): May 7–10.



Additionally,
the U.S. National Oceanic and Atmospheric Administration (NOAA) forecasts an active Atlantic hurricane season from June 1 to November 30. The agency predicts 14–16 named storms, with two or three potentially developing into hurricanes that could directly impact the Caribbean Coast.



The National Meteorological Institute, or Weather Institute, provides weather forecasts, hazard warnings, and safety information to the public and organizations.



 

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How is your community preparing for the rainy season? We would like to know your thoughts on this story. Send your comments to news@amcostarica.com



  


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