Weather warnings
Jul
01
Weather Warning
Rainy conditions in the Caribbean and Northern Zone this Tuesday and Tropical Wave #12
Jul 01th, 2025
10 am
Diagnosis The strengthening of the trade winds over the central and northern regions of the country has produced wind gusts of up to 50 km/h in areas such as Alajuela this morning. This...
Jun
28
Weather Warning
Tropical Wave #10 over Costa Rica
June 28th, 2025
10:30 a.m.
Diagnosis: Tropical wave #10 is over the country this Saturday, causing instability in maritime areas of the Caribbean and northern parts of the Northern Zone. There has been increasing...
Jun
27
Weather Warning -Update-
Rainy Afternoon in Costa Rica
June 27th, 2025
05.40 p.m.
Forecast: After the passage of Tropical Wave 9 yesterday, Thursday, the atmosphere remains unstable over the country. Along with warm morning temperatures and high humidity from recent rains,...
Jun
27
Weather Warning
Tarde lluviosa en Costa Rica
June 27th, 2025
10:00 am
Diagnosis: After the passage of tropical wave #9 on Thursday, the atmosphere continues to be unstable over the country, which, together with the warm temperatures of this morning and the high...
Jun
26
Weather Warning | Update
Rainfall activity of varying intensity this afternoon in the Pacific and Northern Zone
June 26, 2025
5:00 p.m.
Diagnostic: The passage of Tropical Wave #9, in combination with the Intertropical Convergence Zone, maintains atmospheric instability over the country. This has generated rain showers and...
Weather warnings history
In this section you will find the weather warnings history.
Weather Warning
Feb
25
Weather Warning
Cold front #4
February 25, 2020
2.50 pm
As the latest analysis shows, the cold front # 4 will be arriving in the country this weekend. Given this, it is estimated that trade winds begin to accelerate again until reaching speeds between very strong to intense from Thursday night, being Saturday when the major gusts are reached, amounts higher than 120 km / h are estimated in the north of Guanacaste. This new period of intense winds will last at least until Monday.
In addition, the proximity of the cold mass associated with the cold front over the north of the country will be causing a significant reduction in daytime temperatures in the Central Valley and to a lesser extent in the north of the national territory.
On the other hand, the Caribbean, the North Zone and the east / north sector of the GAM will experience an increase in cloud cover and rainfall, intermittent rains are anticipated on Friday and weekend in Limón and mountainous areas of the Zone North, as well as drizzles in the Central Valley.
Due to the above, the IMN recommends: be attentive to the information that the IMN publishes on: Twitter: @IMNCR, Facebook: National Meteorological Institute, Website: www.imn.ac.cr.
Gabriela Chinchilla R
Meteorologist
DMSA-IMN
RSS IMN latest alerts(Local Notification): https://www.imn.ac.cr/en/web/imn/avisos-meteorologicos/-/asset_publisher/lTlyP4wEZlDa/rss 
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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.
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