La Niña phenomenon strengthens and will extend into next year. La Niña is a phenomenon that produces climatic anomalies around the world due to an abnormal cooling of the waters of the equatorial Pacific Ocean. This new Niña has been gradually strengthening since August-2020.
Previously, the most recent La Niña event occurred in 2018 and was of moderate intensity. La Niña is one of the factors that cause a more intense and prolonged rainy season on the Pacific slope, as well as a very active hurricane season.
But additionally, the same effect is occurring due to a significant warming in the Atlantic Ocean, but particularly in the Caribbean Sea, where temperatures were the highest in the historical record. Therefore, the current thermal configuration of both oceans (cold in the Pacific and hot in the Atlantic) is causing a more extreme climatic condition in our country and is the reason why the dry season has not yet been established.
This same temperature pattern also explains the meteorological drought in the Caribbean Slope. The forecast for La Niña is that it will reach its maximum intensity in the next 3 months as an event of strong magnitude and that it will last at least until the beginning of the next season. of rains.
As a consequence, regions such as the southern cantons of Puntarenas may not experience the traditional dry season. But in those regions where there is a dry season (the North Pacific and the Central Valley), some cloudy and rainy days are possible. The cooling of the air associated with this phenomenon would prevent the conditions from being less hot than normal during the dry season.