October falls within Costa Rica’s “green season,” or rainy season, in the Central Valley where San Jos is located. This period typically experiences significant rainfall, often in the afternoons or evenings, interspersed with periods of sunshine. Temperatures generally range from comfortable highs in the mid-70s Fahrenheit (low 20s Celsius) to cooler lows in the mid-60s Fahrenheit (high teens Celsius). The elevated location of the capital city contributes to these moderate temperatures.
Understanding the climatic conditions of the Central Valley during this time is essential for travelers planning visits. While rain is frequent, it rarely lasts all day, allowing for outdoor activities. The lush landscapes are particularly vibrant during the green season, offering breathtaking scenery. This time of year can also offer lower prices on accommodations and fewer crowds than the peak dry season. Historically, October marks a transition period as the intense rainfall of September begins to taper off, paving the way for the drier months ahead.