Weather warnings
May
23
Weather Warning
Rain and thunderstorms expected this Friday
May 23, 2025
10.00 a.m.
Discussion: An increase in ambient humidity, along with the proximity of the Convergence Zone and local factors such as breeze entry and morning warming, will facilitate cloudiness and...
May
18
Weather Warning
Scattered showers and thunderstorms this Sunday in recurring sectors
May 18, 2025
09:40 a.m.
Diagnosis: Local factors such as humid Pacific breezes and warm temperatures will favor scattered showers with thunderstorms this Sunday afternoon in areas where significant rainfall has occurred...
May
17
Weather Warning
Scattered heavy downpours with thunderstorms this Saturday
May 17, 2025
10:20 a.m.
Forecast: The passage of Tropical Wave 2, along with local factors such as humid breezes from both sides and warm temperatures, will favor scattered showers and thunderstorms this Saturday...
May
16
Aviso Meteorológico (Actualización)
Lluvias durante el final de la tarde del viernes
16 de mayo de 2025
4.30 p.m.
Diagnóstico: Persiste la inestabilidad atmosférica sobre el país debido a la cercanía de sistemas de baja presión asociados a la Zona de Convergencia Intertropical y factores locales típicos de...
May
16
Aviso Meteorológico
Actividad lluviosa variable esta tarde de viernes
16 de mayo de 2025
11:00 am
Diagnóstico: Persiste la inestabilidad atmosférica sobre el país debido a la cercanía de sistemas de baja presión asociados a la Zona de Convergencia Intertropical. A esto se suman factores...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-120424-0950am
Apr
12
Weather Warning
Windy conditions this Friday and weekend
Discussion: The gradual increase in atmospheric pressure over the Caribbean Basin has caused the increase in trade winds in Costa Rica. The Central Valley, the North Pacific and the mountain ranges are the regions where constant gusts are being experienced, with maximum speeds so far in some of the IMN stations: 84 km/h in Carrillo, Orosi Volcano 82 km/h, Bagaces 73 km/h, 65 km/h in Juan Santamaría Airport, 60 km/h in Barva de Heredia, 54 km/h in Santa Ana, 94 km/h in Chirripó.
Forecast: For this day and during the weekend, trade winds are expected with moderate to strong intensities, estimated ranges close to 100 km/h in the north of Guanacaste and the mountain ranges, while in the Central Valley and the lower parts of the Pacific North estimated between 40-65 km/h.
In addition, a mass of dry air is positioned over the region, favoring mostly stable conditions and little precipitation in the country. The possibility of rain will be limited to the South Pacific in the afternoon, which will be short-term rains.
Warning: Special attention due to strong gusts in the Central Valley and the North Pacific.
Due to the above, the IMN recommends:
- Prevention of wind gusts and their possible impact on roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country and Guanacaste (national parks, volcanoes).
- Caution in air navigation due to increased turbulence, as well as in maritime navigation due to increased rough seas, especially in the North Pacific, Gulf of Nicoya and northern Central Pacific.
- Avoid burning of all types, as they can get out of control.
- Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr
Rebeca Morera R
Meteorologist
DMSA-IMN
