Weather warnings

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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Jun

26

Weather Advisory

Variable intensity rainfall expected this afternoon, in the Pacific and North Zone

June 26th, 2025
9:50 a.m.

Diagnostic: Tropical Wave 9, located in the Pacific near the country, is still unstable in its surroundings. Along with the Intertropical Convergence Zone over southern Central America, it will...

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Aviso Meteorológico-IMN-150720-1030am

Jul

17

Weather Warning

Influence of Sahara dust and windy conditions on this day

July 17, 2020
10.30 a.m.

Discussion: The country is immersed in a mass of dust from the Sahara, which generates stable conditions and little rainfall at the national level, also reduces visibility mainly towards the horizon and causes a hot environment. In addition to this, moderate to strong gusts of wind are recorded in the north and center of the country, the highest speeds reaching 65 km/h in northern Guanacaste and 73 km/h in Cerro Chitaría.
Forecast: The dust mass of the Sahara will continue to be present this Friday, therefore, the possibility of rain will remain low throughout this day. The decrease in the concentration of the particulate is estimated to be gradual during Sunday

Regarding the windy pattern, trade winds between moderate and strong are estimated this Friday; with greater perception in the North Pacific, Central Valley and mountainous sectors. Maximum gusts between 50-80 km/h are expected.

Warning: We recommend caution to the population with respiratory problems and / or allergies. Beware of strong gusts of wind in the Pacific and Central Valley.
Due to the above, the IMN recommends:

  • Caution to air navigation due to turbulence
  • Prevention against the possibility of falling trees, branches among other things affected by strong winds.
  • 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


By Rebeca Morera 7/17/20 7/17/20 7/17/20