General Review

Cold surge #2 has entered northern Central America this Thursday, and is expected to continue advancing over the region and the Caribbean Basin during the weekend. The frontal line associated with this system is expected to reach Costa Rica, along with the cold air mass.
 

The country will gradually begin to feel its effects starting this Friday. First, an increase in the intensity of the winds in the regions of the North Pacific, Central Valley and the mountain ranges, with occasional gusts of between 30-60 km/h and maximums estimated between 70-90 km/h, especially in mountainous areas. Next, an increase in cloudiness and rain in the Caribbean and the North Zone, especially between Friday and Saturday; to a lesser extent, cloudy incursions and drizzle are possible in the North and East of the Central Valley. In addition, a reduction in daytime temperatures is expected, most notably in the Central Valley and the north of the country.
 

Starting on Monday, the influence of the frontal system in the country will decrease; However, high atmospheric pressure levels in the Caribbean Sea will lead to accelerated trade winds, which in turn may generate occasional rains in the Caribbean and the North Zone.
 

In the Central and South Pacific, little precipitation is expected during this forecast period.

Forecast

Mornings: Partial to slight cloudiness in the Pacific and Central Valley. Windy in GAM and Guanacaste, possible drizzle in the mountains of these areas. In the Caribbean and the North Zone, it is expected to be mostly cloudy and rainy from Friday onwards.

Afternoons: Partly cloudy is expected in the North Pacific and Central Valley, windy from Friday onwards, and possible drizzle in the mountains. In the Central and Southern Pacific, isolated showers and possible thunderstorms are expected. In the Caribbean and Northern Zone, variable cloudiness and scattered rain.

Nights: Partly cloudy in the Pacific, possible showers in the central and southern parts; windy in Guanacaste. In the Central Valley, partly cloudy is expected, with occasional gusts of wind and possible occasional drizzle in the North and East. Caribbean and Northern Zone, mostly cloudy and rain, with greater recurrence on Friday and Saturday.

Temperature extremes in climatic regions of the country

RMORERADMSA/IMN