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.
Aviso Meteorológico-IMN-290120-1010am
Jan
29
Weather Warning
Rainy conditions on this Wednesday
January 29, 2020
10.10 a.m.
Discussion: Cloudy conditions and rainfall remain present this morning over the country, especially in the Pacific regions, this situation is a product of the proximity of the Intertropical Convergence Zone, which generates a very unstable and humid atmospheric pattern.
Forecast: In the remainder of the morning, cloudiness will remain between partial and total nationwide. Isolated rains are expected in coastal areas of the Pacific, with amounts between 5-10mm.
In the afternoon and early hours of the night it is expected greater cloud cover and presence of rains and showers with isolated thunderstorms in the Central and South Pacific, as well as in the Nicoya Peninsula, accumulated 30-60 mm, possible higher amounts of form located. In the Central Valley and mountains of the Caribbean and North Zone, rainfall and showers are expected with accumulated between 10-30 mm.
Due to the above, the IMN recommends:
- Caution in areas vulnerable to flooding due to sewer saturation, increased flow in rivers and streams, and in areas prone to landslides.
- Shelter in a safe place in case of hearing thunderstorms or perceiving strong gusts of wind near storm clouds, as well as precaution for possible fall of tree branches, power lines among others.
- Caution to drivers due to reduced visibility and wet roads.
- Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute and the Website: www.imn.ac.cr
Rebeca Morera R
Meteorologist
DMSA-IMN
