Costa Rica residents and tourists alike face colder mornings through the weekend, with temperatures in the Valle Central dropping by up to 4 degrees Celsius and higher elevations seeing declines of up to 6 degrees. Cold fronts continue to move through the region, delivering stronger winds and drier air.
The National Meteorological Institute notes that low humidity and stable conditions lead to these lower temperatures, particularly in the early hours. In the Valle Central, overnight lows reach the mid-teens Celsius, which makes outdoor activities and commutes feel sharp. Areas such as San José, Alajuela, and Cartago experience the most noticeable shifts, with mornings cooler than typical for January.
In higher zones like the Irazú and Poás volcanoes, minimums approach single digits, at times causing frost on plants. Winds intensify the chill, reaching gusts of 60 kilometers per hour in the Valle Central and higher in mountains, which heightens the cold feel.
This trend links to the cold front season, spanning November to April. These systems start from northern patterns and move south, cooling air over the Caribbean. While coasts may see rain, inland areas stay clear with little precipitation. The Pacific and Guanacaste face milder effects, with warmer days but cooler starts.
Daytime highs hold steady in the mid-20s Celsius in the Valle Central and higher on coasts. The wider gap between night and day calls for layered clothing to handle changes. Drivers should prepare for fog in elevated spots, which can limit visibility. The pattern eases early next week as winds slow and humidity increases. Until then, mornings stay fresh, leading to sunny afternoons. A new front may arrive by Sunday, prolonging the cool period.
