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-IMN 080420-930 am
Apr
21
Aviso Meteorológico
Aguaceros aislados en el Pacífico y Valle Central con tormentas vespertinas
21 de abril de 2020
10.10 am
Diagnosis: in the morning there have been very warm conditions of temperatures up to 27 ° C and little windy in most of the Central Valley, in general this favors an afternoon downpour condition.
Forecast: During the afternoon of this Tuesday isolated downpour conditions with thunderstorms will be occurring in the mountains of the Central Pacific, South Pacific, North Zone, Caribbean, the expected amounts are between 15-50 mm in periods of 6 hours.
On the other hand, in the Central Valley there will be isolated showers with an electrical storm, particularly in the center and east of the region; the expected amounts of rain will be between 10-60 mm in periods of 6 hours.
In the night period isolated showers are expected in the South Pacific and coastal sector of the Central Pacific only, estimated amounts between 5-20 mm in 6 hours.
Due to the above, the IMN recommends:
Caution in areas vulnerable to flooding due to sewerage saturation, especially in regions of the South Pacific and east of the Central Valley, as well as mountains of the Northern Caribbean and Northern Zone.
Take refuge in a safe place in case of hearing an electrical storm or perceiving strong gusts of wind near the storm clouds, as well as precaution for possible fall of tree branches, power lines, among others.
Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEBSITE: www.imn.ac.cr
Daniel Poleo
Meteorologist
DMSA-IMN
