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-110720-0705am

Jul

11

Weather Warning

Rainy conditions on this Saturday

July 11, 2020
07.05 a.m.

Discussion: The Intertropical Convergence Zone is active and close to the country, generating rainy conditions from early hours of this day in the Caribbean, the North Zone, Central Valley, in isolation in sectors of the Central Pacific and North Pacific; the accumulated ones are around 10-30 mm.
Forecast: During the first part of the morning it will prevail mostly cloudy in much of the country with scattered rains in the Caribbean, the North Zone, the Central Valley, accumulated between 10-25 mm. Gradual reduction of rainfall and cloudiness is estimated in the second part of the morning period.

During the afternoon and early evening, heavy rains and heavy showers with an electrical storm are expected in the Central and South Pacific, as well as in the Nicoya Peninsula, amounts between 40-70 mm are estimated. Isolated rains and showers are expected in the Central Valley, accompanied by an electrical storm, with greater potential towards the central and western parts, accumulated between 20-40 mm. For its part, scattered rains are expected in the North and Caribbean Zone, of moderate intensity in mountainous sectors, amounts between 10-30 mm.

Warning: High levels of soil saturation in the Central Pacific, South Pacific, North Zone and mountains of the South Caribbean, special attention.
Due to the above, the IMN recommends:

  • Caution in areas vulnerable to flooding due to sewer saturation.
  • Take refuge in a safe place in case of listening to a thunderstorm or perceiving strong gusts of wind near storm clouds, as well as caution for possible falling tree branches, power lines, among others.
  • Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the Website: www.imn.ac.cr

Rebeca Morera R
Meteorologist
DMSA-IMN