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...

See More


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...

See More


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,...

See More


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...

See More


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...

See More


Weather warnings history

In this section you will find the weather warnings history.

« Back

Aviso Meteorológico-IMN-290420-1000am

Apr

29

Weather Warning

Rainy conditions on this Wednesday

April 29, 2020
10.00 a.m.

Discussion: The proximity of the Intertropical Convergence Zone is generating humid and unstable atmospheric conditions, conducive to the occurrence of precipitation. From early in the morning, cloud cover is present in the Caribbean and the North Zone, where isolated rains with amounts of less than 10 mm also appear. In addition, cloud cores approach the South Pacific causing isolated showers.

Forecast: During the rest of the morning, isolated rains and showers will be maintained with a possible electrical storm in the Caribbean and the Northern Zone, which tend to decrease in the course of the afternoon, amounts between 20-40 mm are estimated.

In the Central and South Pacific, rainfall will occur around noon and will continue during the afternoon and early evening, the rains will be accompanied by a thunderstorm, accumulated estimates between 25-50 mm. For its part, in the Central Valley and the Nicoya Peninsula, showers and showers with isolated thunderstorms are expected, mainly in the afternoon, amounts between 10-30 mm.

Due to the above, the IMN recommends:

  • Caution in areas vulnerable to flooding due to sewerage saturation.
  • Take refuge in a safe place in case of hearing an electrical storm or perceiving strong gusts of wind near the storm clouds, as well as precaution for possible fall of 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