Weather warnings
Jul
08
Informative Weather Notice
Sahara dust over the country
July 08th, 2025
9:50 a.m.
Diagnosis: Increases in atmospheric pressure in the Caribbean Sea accelerate the trade winds over the basin, as well as over central and northern Spain. Furthermore, a dry, stable air mass...
Jul
07
Weather Warning
Heavy downpours during the afternoon in the Pacific and northern regions
July 07th, 2025
10.40 a.m.
Discussion: Tropical Wave 13 is located in western Costa Rica, close to entering the Pacific Ocean. Although it is a weak wave, its interaction with the Intertropical Convergence Zone increases...
Jul
06
Aviso Meteorológico
Efectos de la onda tropical #13 en el país este domingo y lunes
06 de julio de 2025
11.25 am
Diagnóstico: La onda tropical #13 se localiza este domingo al oeste de Panamá, generando inestabilidad en el mar Caribe frente a la costa costarricense, lo que favorece lluvias en el Caribe Sur...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-100320-Condiciones ventosas este martes
Mar
10
Weather Warning
Strong winds are maintained this Tuesday
March 10, 2020
10.35 am
Diagnosis: As a result of the high atmospheric pressure that is registered in the Caribbean Sea, caused by the cold surge # 22 that continues to enter the Atlantic Ocean, the strong wind is maintained in the country.
In the North Pacific the major gusts have reached between 70 km / h in low areas and up to 84 km / h in the mountains, in addition, in the Central Valley the gusts this morning have been 65 km / h on the Chitaría hill, 68 km / h in Alajuela, 60 km / h in Ciudad Colón and 50 km / h in San José, to name a few. No rains nationwide.
Forecast: It is expected that strong winds persist today in the center and north of the national territory generated by the high pressure system associated with cold surge, with a tendency to gradually decrease over the course of this Wednesday.
Specifically for Tuesday, windy conditions will continue in the North Pacific, Central Valley and mountain ranges, with maximum gusts between 50-75 km / h in the lower parts and between 75-90 km / h for the north of Guanacaste and Mountains of the country. In addition, in the national territory it is kept under the moisture content, which favors a dry environment with very few cloud development and consequently very hot conditions throughout the 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, 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: CR National Meteorological Institute and the Website: www.imn.ac.cr
Gabriela Chinchilla
Meteorologist
DMSA-IMN
