Weather warnings
Aviso Meteorológico-IMN-010625 5.50pm
Jun
01
Weather Warning (Update)
Tropical Wave #4
Jun 01, 2025
5:50 p.m.
Forecast: Tropical Wave 4 is over Costa Rica this Sunday. In addition to the transit of this disturbance, we remain within the Intertropical Convergence Zone over our latitude, providing high moisture inputs to the Pacific slope. The main accumulated rainfall at this time is as follows: Northern Zone 53 mm in San Ramón; Northern Pacific 46 mm in Santa Rosa; Central and Southern Pacific 36 mm in Puerto Jimenez; Central Valley 29 mm in Fraijanes; and Caribbean 13 mm in Turrialba.
Forecast: The wave will be exiting the country tonight. Specifically, during the night, the areas with the greatest potential for heavy downpours with thunderstorms are the Northern Pacific and the Northern Zone, with estimated rainfall amounts between 20 and 60 mm over periods of 3 to 6 hours. Light rain with fog is expected in the Central Valley, Central Pacific, and Southern Pacific. The Caribbean will remain predominantly cloudy.
Warning: Soils are highly saturated in the South Pacific, Garabito, and Sarapiquí River basins. Moderate to high saturation is observed in the plains of the Nicoya Peninsula, the Caribbean, and Braulio Carrillo National Park.
Due to the above, the IMN recommends: • Caution due to sewer saturation in areas prone to this type of flooding. • Prepare for thunderstorms and seek shelter in a safe place if strong wind gusts occur or are felt near storm clouds, due to the possible fall of tree branches, power lines, among other things. These gusts can reach 80 km/h in some isolated cases. • Stay informed through social media: Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR, and the website: www.imn.ac.cr
Gabriela Chinchilla Ramírez Meteorologist DMSA-IMN
Weather warnings history
In this section you will find the weather warnings history.
Jun
04
Aviso Meteorológico
Lluvias y aguaceros con tormenta eléctrica para esta tarde
4 de junio de 2025
9:55 a.m.
Diagnóstico: Las altas temperaturas registradas esta mañana, junto al aumento progresivo de la humedad en el ambiente, están generando condiciones atmosféricas favorables para la formación de...
Jun
03
Weather Warning (Update)
Favorable conditions for heavy downpours this Tuesday
03 de junio de 2025
06.10 p.m.
Discussion: Favorable atmospheric conditions for heavy rainfall are being recorded across the country this Tuesday. The high humidity from the recent rains and the high temperatures experienced...
Jun
03
Weather Warning
Favorable conditions for heavy downpours on Tuesday
June 3th, 2025
10:00 a.m.
Forecast: Isolated showers with thunderstorms are expected along the Guanacaste and Central Volcanic mountain ranges, as well as the Central Pacific and South Pacific mountains, with estimated...
Jun
02
Aviso Meteorológico
Lluvias continuarán en las primeras horas de la noche
2 de junio de 2025
5:45 pm
Diagnóstico: Durante esta tarde, se han registrado fuertes aguaceros en gran parte territorio nacional, siendo el Valle Central la región con los mayores acumulados entre 40 mm y 50 mm, y los...
Jun
02
Weather Warning
Thunderstorms and showers this afternoon in the Pacific slope
June 02, 2025
10:30 a.m.
Forecast: High levels of available moisture, along with local factors such as sea breezes and rising temperatures in the early afternoon, will be the ingredients for afternoon rains this early...
Jun
01
Weather Warning (Update)
Tropical Wave #4
Jun 01, 2025
5:50 p.m.
Forecast: Tropical Wave 4 is over Costa Rica this Sunday. In addition to the transit of this disturbance, we remain within the Intertropical Convergence Zone over our latitude, providing high...
Jun
01
Weather Warning (Update)
Tropical Wave #4
Jun 01, 2025
11.10 am
Diagnosis: is located over Costa Rica this Sunday. In addition to the transit of this disturbance, we remain within the Intertropical Convergence Zone over our latitude,...
May
31
Aviso Meteorológico (Actualización)
Lluvias variables en el país este sábado y onda tropical #4 mañana domingo
31 de mayo de 2025
5 pm
Diagnóstico: Este fin de semana la Zona de Convergencia Intertropical se muestra activa nuevamente frente al Pacífico costarricense; lo cual ha ocasionado aguaceros en el Pacífico Sur y eventos...
May
31
Weather Warning
Variable rains in the country this Saturday and tropical wave #4 tomorrow Sunday
May 24, 2025
11.40 am
Forecast: This weekend, the Intertropical Convergence Zone (ITC) is active again off the Costa Rican Pacific, causing downpours in the South Pacific and intermittent rain events in the Central...
May
30
Weather Warning
Variable morning rains this Friday in the Caribbean regions
May 30, 2025
7:30 a.m.
Diagnosis: High humidity levels in southern Central America, combined with instability in the upper troposphere in the region, have favored variable rainfall in the Caribbean and parts of the...
