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-010220-600pm

Feb

01

Weather Warning

Cold push # 18 in the northern Caribbean Sea accelerates the wind in the country

February 1st, 2020
6.00 p.m.

Diagnosis: Cold surge # 18 has entered the Caribbean Sea this afternoon and will be moving through this sector in the next two days. Due to this, the windy pattern in the country will increase over the course of this night, establishing windy conditions at least until Monday.

Due to the action of the wind, there will be a greater contribution of humidity from the maritime sector to the regions of the North Zone and the Caribbean, generating cloudy skies and scattered rains throughout the day. Part of these rains can reach the Central Valley in the form of drizzles and weak rains.

Forecast: The regions of the North Pacific and the Central Valley; and mountain passes will be gusts of wind between moderate to strong intensity. In Guanacaste, speeds between 60-70km / h and maximums of 85-95km / h are estimated near the mountain range. In the Central Valley, speeds between 40-50km / h and maximums of 60-70km / h are estimated.

The precipitations in the North Zone and the Caribbean will be dispersed throughout the day, with amounts accumulated between 15-30mm and maximums of 40mm for this Sunday; in addition, drizzles are expected in the mountainous sectors north and east of the Central Valley. On the Pacific Slope, no significant rainfall is expected for this day.

Due to the above, the IMN recommends:

  •  Extreme precautions due to strong winds and their possible impact on roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country (national parks, volcanoes).
  • Caution for boats by choppy sea and very strong waves in the North Pacific, Gulf of Nicoya, Central Pacific and the Caribbean Sea, as well as air navigation due to turbulence over the mountainous sectors.
  •  Avoid burning of all kinds as they can get out of control.
  •  Stay informed through social networks, Twitter: @IMNCR, Facebook: CR National Meteorological Institute and the Website: www.imn.ac.cr


Juan Diego Naranjo Díaz
Meteorologist
DMSA-IMN


By Juan Diego Naranjo 2/1/20 2/1/20 2/1/20