Weather warnings
May
03
Weather Warning
Heavy rains and a thunderstorm this afternoon and early evening
May 03, 2025
10.25 a.m.
Discussion: The Intertropical Convergence Zone continues over the country, generating a high degree of instability and humidity. This, combined with the warm temperatures recorded this morning,...
May
02
Weather Warning
Intertropical Convergence Zone over the country this Friday
May 02, 2025
10.45 am
Diagnosis: Highly unstable conditions continue across the country this Friday. The ITCZ remains positioned over the country, contributing moisture to the Pacific and Central Valley since early...
May
01
Aviso Meteorológico
Actividad lluviosa en esta tarde y noche
01 de mayo de 2025
10.00 am
Diagnóstico: La Zona de Convergencia Intertropical se encuentra activa sobre el país. Esto favorece un panorama húmedo e inestable, idóneo para la presencia de nubosidad y la ocurrencia de...
Apr
30
Weather Warning
Rainy activity this afternoon and into the evening
April 30, 2025
10.20 a.m.
Discussion: The Intertropical Convergence Zone is beginning to show increased activity and is likely to remain close to Costa Rica. This favors a humid and unstable outlook, ideal for cloudiness...
Apr
29
Weather Warning
Showers and Thunderstorms This Evening
April 29, 2025
10 am
Forecast: The atmosphere remains humid over Costa Rica this Tuesday, due to the position of the Intertropical Convergence Zone over the country. This, combined with local factors such as warm...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-190320
Mar
19
Weather Warning
Windy conditions persist this Thursday
March 19, 2020
11.00 am
Diagnosis: The transit of high pressure systems through the Gulf of Mexico and the Atlantic Ocean maintain the pattern of strong winds in the country. In the North Pacific, the highest gusts have reached between 40-60 km / h in the lower parts and between 70-84 km / h in the north and higher areas. On the other hand, in the Central Valley the gusts are in the range of 30-55 km / h. There are no rains in the country this morning.
Forecast: It is expected that strong winds in the center and north of the national territory generated by the high pressure system will persist during the rest of the week.
During this Thursday the windy conditions will continue in the North Pacific, Central Valley and mountain ranges with maximum gusts between 40-70 km / h in the lower parts and between 75-95 km / h for the north of Guanacaste and the mountains of the country.
In the national territory it is kept low in the humidity content which favors a dry environment, with very few cloudiness developments, only scattered showers are expected in the evening period in the Central and South Pacific, especially in the mountainous sectors and their vicinity with maximum accumulated between 5-20 mm.
Due to the above, the IMN recommends:
• Take extreme precautions for strong winds and their possible damage to roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country (national parks, volcanoes).
• Caution for boats by rough sea and very strong waves in the North Pacific, Gulf of Nicoya, the Caribbean Sea, as well as air navigation due to turbulence over the mountainous sectors.
• Avoid burning of all kinds as they can get out of control.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEBSITE: www.imn.ac.cr
Gabriela Chinchilla
Meteorologist
DMSA-IMN
