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...

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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...

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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,...

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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...

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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...

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Weather warnings history

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Aviso Meteorológico-IMN-141224-11.00 a.m.

Dec

14

Weather Warning

The influence of cold surge #5 is diminishing this afternoon

December 14, 2024
11.30 am

Diagnosis: Cold surge #5 begins to emerge from the Caribbean Sea this Saturday afternoon. In these early hours of the day, the strongest gusts have been recorded at Cerro Buenavista and Volcán Irazú, 90 km/h; at Cerro Cedral (Escazú) 83 km/h and Cerro Chitaría (Santa Ana) 73 km/h, Heredia, Cartago and Alajuela with maximums of 55 km/h.

The low humidity content favors clear skies in 90% of the national territory, and also caused a colder dawn in several parts of the country. Some of the lowest temperatures in urban areas were: La Unión de Cartago 8.6°C, Rancho Redondo de Goicoechea 11.6°C, Coronado 12°C, Ochomogo 13°C, Turrialba 15.9°C, among others.

Forecast: Strong wind gusts will continue to be experienced in the early afternoon, with speeds between 30 km/h and 60 km/h estimated in the Central Valley and the North Pacific, while in the mountainous areas and northern Guanacaste, values ​​between 70 km/h and 95 km/h are expected. However, by late afternoon, the gusts will be lower and will remain moderate.

About precipitation, few of it is expected. Some occasional drizzle in the north of the Northern Zone in the afternoon. In the rest of the country, there is a low possibility of rain, if it occurs, it will be limited to the higher areas.

Warning: Pay special attention to mountainous areas of the Northern Caribbean, Northern Zone and surrounding low areas, because the basins have saturation levels between 85% and 95%.

Due to the above, the IMN recommends:

• Prevention due to gusts of wind and their possible affectation of 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 fires of any kind, as they can get out of control.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr

Gabriela Chinchilla R
Meteorologist/DMSA-IMN