Q COSTARICA — Cold front No. 5 will enter Costa Rica today, Wednesday, and its effects will continue through Friday and even into Saturday, confirmed the national weather service, the Instituto Meteorológico Nacional (IMN).
According to Pablo Solano, an IMN specialist, this system will increase atmospheric pressure in the northern Caribbean basin, thereby accelerating the trade winds over Costa Rica.
“General wind speeds will range between 30 and 50 km/h, with maximum speeds in northern Guanacaste and the mountains between 70 and 80 km/h,” he explained.
Starting this Wednesday, the cold front will cause:
- Occasional gusts in the North Pacific, mountain ranges, and parts of the Central Valley.
- Nighttime rain and drizzle in the Caribbean and the Northern Zone.
- Light rain in parts of the Central Valley, especially in Cartago and in the northern and northeastern mountains.
“Due to these slightly windier conditions in the Caribbean Sea basin, more cloud cover is expected to move towards the Caribbean slope,” the IMN stated.
Given this, an increased probability of rain is expected, especially during Wednesday night.
“Likewise, this could also occur in some areas of the Central Valley, such as the surroundings of the province of Cartago and in the mountains to the northeast and north,” the expert indicated.
According to the IMN, light rain to drizzle is expected, with a higher probability during the night.
On the other hand, due to residual moisture and not the effects of the cold front itself, occasional showers are expected in the South Pacific during the afternoon.
Meanwhile, in the North and Central Pacific, as well as in areas of the Central Valley to the west and south, partly cloudy skies are expected.
The official weather forecast for Wednesday, December 10, 2025
Cold surge #5 will move in on Wednesday, leading to an increase in the intensity of the trade winds. Occasional gusts are expected in the Central Valley, the North Pacific, and the mountainous regions of the country, with estimated speeds between 30 and 50 km/h, and maximums between 70 and 80 km/h in northern Guanacaste and the mountains.
Throughout the day, variable cloudiness and a chance of rainfall are anticipated in the Caribbean Slope, especially during the night. Similarly, in some sectors of the province of Cartago and in the mountains north of the Central Valley, there is a chance of drizzle and light rain.
In the Pacific region, cloudiness is expected to range from low to partial, with occasional showers in the South Pacific during the afternoon.
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