Weather warnings
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-020220-12m
Feb
02
Weather Warning
Windy conditions this Sunday due to the cold surge # 18
February 2nd, 2020
12 m.
Diagnosis: Cold surge # 18 continues its passage through the northern Caribbean Sea, towards the Atlantic Ocean; which causes the windy pattern in the country this Sunday. The maximum wind gusts recorded at this time have been in the North Pacific, with speeds between 60-90 km / h and maximum 100 km / h as Cuanjiniquil de Santa Cruz and 122 km / h in La Cruz; on the other hand, in the Central Valley there have been gusts of wind between 40-70 km / h, with maximums of up to 70-80km / h in the GAM and up to 87 km / h in Cerro Chitaría.
Due to the wind, there is a mayor of humidity from the maritime sector to the regions of the North Zone and the Caribbean, places where there have been scattered rains and of weak intensity with maximum amounts recorded between 10-20 mm until this hour; part of these precipitations have improved the Central Valley in the form of weak rains and drizzles to the north and east of the region.
Forecast: The regions of the North Pacific and the Central Valley; and mountain passes will be gusts of wind with intensity of strong to very strong. In Guanacaste, speeds between 60-90 km / h and maximums of over 100 km / h near the mountain range are estimated. In the Central Valley, speeds are estimated between 40-60 km / h and maximum near 90 km / h.
Precipitation will continue in the North Zone and the Caribbean in dispersed form the rest of the day. In the afternoon, in the North Zone it is estimated with amounts accumulated between 15-30 mm and maximums of 40 mm; while, in the Caribbean, accumulated amounts between 5-15 mm and maximums of 20 mm are estimated. At night, rainfall is concentrated in the mountainous sectors of these regions, with amounts estimated between 5-10 mm and maximums of 20 mm.
They will continue to present drizzles and weak rains in the mountainous sectors north and east of the Central Valley. On the Pacific Slope, there is no significant rainfall expected for this day.
Due to the above, the IMN recommends:
• Extreme precautions due to strong winds and their possible impact on roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country (national parks, volcanoes).
• Caution for boats by choppy sea and very strong waves in the North Pacific, Gulf of Nicoya, Central Pacific and Caribbean Sea, as well as air navigation due to turbulence over the mountainous sectors.
• Avoid burning of all kinds and that can get out of control.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: CR National Meteorological Institute and the Website: www.imn.ac.cr
Juan Diego Naranjo Díaz
Meteorologist
DMSA-IMN
