Weather warnings
Aviso Meteorológico-IMN-160625
Jun
16
Weather Warning
Tropical Wave #6 over Costa Rica
16 de junio de 2025
10:00 a.m.
Diagnosis: The passage of tropical wave No. 6 over Costa Rica, together with the proximity of the Intertropical Convergence Zone, maintains a very unstable environment in the country, favorable for heavy downpours with thunderstorms during the afternoon and part of the night. In addition to the above, during the weekend, accumulated rainfall between 80 mm and 150 mm was recorded near the mountain ranges in the last 48 hours.
Forecast: During the morning, a sultry atmosphere will prevail in the national territory, with occasional rains near the coast of Limón and in the Nicoya Peninsula in the next hours.
In the afternoon, showers with thunderstorms are forecast, concentrated in the North Pacific, Northern Zone and Central Valley, with estimated amounts between 25 mm and 75 mm, and punctual maximums of up to -or higher than- 100 mm near the mountain ranges. In the rest of the country, both in the Central and South Pacific and in the Caribbean, rainfall amounts between 40 mm and 80 mm are estimated near the mountainous sectors.
In the evening hours, rains will continue with moderate intensity in the North Pacific, Central Valley and Northern Zone, with estimated accumulations between 15 mm and 30 mm near the mountains. Fog banks are expected in the early hours in the surroundings of the GAM and mountain passes.
Warning: Special attention in the Nicoya Peninsula, Tempisque Valley, Sarapiquí basin, Aguas Zarcas and the canton of Upala, as they are highly vulnerable to flooding. In addition, caution is recommended in mountainous sectors, mainly in Cambronero (Route 1) and Zurquí (Route 32), as they are prone to landslides in the coming hours.
Due to the above, the IMN recommends:
- Caution before the possible saturation of the sewage system in areas prone to flooding due to water accumulation.
- Prevention before thunderstorms: in case of strong gusts of wind near storm clouds, it is recommended to seek shelter in a safe place, as they could generate falling tree branches, power lines or other objects. These gusts can reach up to 80 km/h in isolated cases.
- Stay informed through official channels:
Twitter: @IMNCR
Facebook: Instituto Meteorológico Nacional CR
Website: www.imn.ac.cr
Juan Diego Naranjo Díaz
Meteorologist
DMSA-IMN
Weather warnings history
In this section you will find the weather warnings history.
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...
Jun
26
Weather Advisory
Variable intensity rainfall expected this afternoon, in the Pacific and North Zone
June 26th, 2025
9:50 a.m.
Diagnostic: Tropical Wave 9, located in the Pacific near the country, is still unstable in its surroundings. Along with the Intertropical Convergence Zone over southern Central America, it will...
Jun
25
Weather Warning -Update-
Variable Intensity Rainfall Expected This Night
June 25th, 2025
5.10 pm
Diagnosis: Following the passage of strong Tropical Wave #8 on Tuesday, this Wednesday is expected to bring a return to more typical rainy season conditions. Today's rainfall is mainly...
Jun
25
Weather Advisory
Variable Intensity Rainfall Expected This Afternoon
June 25, 2025
10:00 am
Diagnosis: Following the passage of strong Tropical Wave #8 on Tuesday, conditions are expected to return to a more typical rainy season pattern this Wednesday. Today's rainfall will be mainly...
Jun
24
Weather Warning -Update-
Tropical wave #8 over Costa Rica
June 24th, 2025
04:50 p.m.
Diagnosis: The instability of Tropical Wave 8 has manifested itself with scattered heavy rains and downpours in various locations in the central and Pacific regions of the country. Rainfall with...
Jun
24
Weather Warning
Tropical wave #8 over Costa Rica
June 24th, 2025
10:15 a.m.
Diagnosis: The axis of Tropical Wave #8 entered the country in the early hours of Tuesday. This system has caused cloud incursions toward the northern Caribbean border regions with Nicaragua....
