Costa Rica: Four Weeks of Rainfall Deficits

14/09/2026

During the four weeks from September 14 to October 11, 2026, the IMN forecasts below-normal rainfall in Costa Rica's Pacific region, Central Valley, and Western Northern Zone. The pattern is expected to be associated with El Niño and stronger-than-usual trade winds.

Instituto Meteorológico Nacional de Costa Rica (2026)

Instituto Meteorológico Nacional de Costa Rica. (2026). Pronóstico subestacional: válido del 14 de septiembre al 11 de octubre de 2026. https://www.imn.ac.cr/busqueda?_101_assetEntryId=564589&_101_struts_action=%2Fasset_publisher%2Fview_content&_101_type=content&_101_urlTitle=contenido-pronostico-subestacional&p_p_id=101&p_p_lifecycle=0&p_p_mode=view&p_p_state=maximized

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Costa Rica: Four Weeks of Rainfall Deficits

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