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-181020-0400p.m.
Oct
18
Weather Warning
Tropical wave # 46 will cross the country tonight
October 18, 2020
4:00 pm
Diagnosis: A new tropical wave (# 46) is located at this time in western Panama and will be arriving in the country in the course of tonight. This will mark a change in the atmospheric weather in the national territory to a rainier period, then a weekend with little rainfall.
Forecast: The strongest effects of the wave will be perceived in the afternoon on Monday, since it will bring the Intertropical Convergence Zone closer to the country, generating rains during this period mainly along the Pacific Slope and the Central Valley.
Even so, the occurrence of scattered rains during the night and early morning near the coast of Limón and the plains of the North Zone is not ruled out, with estimated amounts between 10-15 mm.
Warning: Special attention due to the South Pacific, mainly during Monday afternoon and until the early hours of the night.
Due to the above, the IMN recommends:
• Caution in areas vulnerable to flooding due to sewerage saturation.
• Take shelter in a safe place in case you hear an electrical storm or perceive strong gusts of wind near the storm clouds, as well as caution against possible falling tree branches, power lines, among others.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr
Juan Diego Naranjo Diaz
Meteorologist
DMSA-IMN
