Weather warnings
May
08
Meteorological Warning Update
(Update) Showers and thunderstorms during the afternoon and early morningmeras horas de la noche
May 8, 2025
6:00 pm
Forecast: Rainy conditions have been observed this afternoon on the Pacific coast, much of the Central Valley, and mountainous areas of the Caribbean and the Northern Zone, due to the activity of...
May
08
Weather Warning
Showers and thunderstorms during the afternoon and early evening
May 08, 2025
10.30 a.m.
Discussion: The Intertropical Convergence Zone remains located over Costa Rica, generating significant moisture and instability. This, along with morning warming and the arrival of sea breezes,...
May
07
Aviso Meteorológico Actualización
(Actualización) Lluvias y aguaceros fuertes en el Valle Central y la vertiente del Pacífico
7 de mayo de 2025
6:20 pm
Diagnóstico: La Zona de Convergencia Intertropical sobre el país, en conjunto con factores locales como el calentamiento diurno y el ingreso de humedad desde el Océano Pacífico, favorecerá...
May
07
Weather Warning
Heavy rain and downpours in the Central Valley and the Pacific slope
May 7, 2025
09:35 a.m.
Diagnosis: The Intertropical Convergence Zone (ITCZ), combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, will favor variable rainfall throughout...
May
06
Weather Warning (Update)
Heavy showers this afternoon and early evening in the country
May 6, 2025
6:20 p.m.
Diagnosis: The proximity of the Intertropical Convergence Zone, combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, has favored heavy downpours...
Weather warnings history
In this section you will find the weather warnings history.
Informative Weather Warning-IMN-181123-12:00 p.m.
Nov
18
Informative Meteorological Warning
Low pressure without cyclonic potential
November 18, 2023
12:00 p.m.
Diagnosis: This Saturday the low-pressure system showed less organization towards the northeastern outskirts of the Caribbean Sea, which is why the National Hurricane Center (NHC) completely dismissed it in its development.
Forecast: The low pressures typical of the Intertropical Convergence Zone remain, both in surrounding regions of the Caribbean Sea and the Pacific, this in the South of Central America, maintaining it active and with contribution of humidity from both sides. The Convergence Zone will gradually reduce its effects on the country between the weekend and the beginning of next week, but they will still continue with scattered variable rains on the Pacific slope (See Meteorological Warning of the day: Meteorological Warnings - IMN).
Due to the above, the IMN recommends:
- Be attentive to the issuance of weather warnings that are published in:
Twitter: @IMNCR
Facebook: National Meteorological Institute
WEBSITE: www.imn.ac.cr
Last information notice of the event
Jose Valverde Mora.
Meteorologist
DMSA-IMN
RSS IMN latest alerts(Local Notification): https://www.imn.ac.cr/en/web/imn/avisos-meteorologicos/-/asset_publisher/lTlyP4wEZlDa/rss 
RSS IMN latest alerts (Amazon Replication): https://cap-sources.s3.amazonaws.com/cr-imn-es/rss.xml 
Impact-based forecasting
Provides information on the potential impacts to occur, in case of severe hydrometeorological events
See more...Services
The National Meteorological Institute, offers a range of services that can be ordered online in the next section of the site.
Go to services
Ephemerides
In this section you will find all the necessary information about sunrises and sunsets of the Sun and Moon, as well as all the information about the corresponding lunar phases.
See more