March in Costa Rica typically marks the transition from the dry season to the wetter, “green” season. This period offers a unique blend of sunshine and occasional rainfall, contributing to lush landscapes and vibrant ecosystems. Visitors can expect daytime temperatures ranging from the mid-70s to the low 90s Fahrenheit (mid-20s to low 30s Celsius), varying by elevation and location. Coastal regions tend to be warmer and drier, while inland and mountainous areas experience cooler temperatures and more frequent precipitation.
Understanding these climatic conditions is essential for planning a trip. The transition period presents advantages, such as fewer crowds than the peak dry season and the emergence of verdant flora and fauna. This time of year can be ideal for experiencing a wider range of activities, from surfing and sunbathing to hiking in rainforests teeming with life. Historically, this shift in weather patterns has been crucial to Costa Rican agriculture, replenishing water resources and supporting the country’s biodiversity.