Weather Warning

Increased trade winds and moisture content in the region

April 04, 2025

10:10 a.m.

Forecast: Rising atmospheric pressure in the central and eastern Caribbean Sea is accompanied by an increase in moisture content from today through Sunday, the latter shifting toward southern Central America. This Friday is manifested by increased cloudiness in parts of the Caribbean and parts of the Northern Zone, with variable rainfall, most significant near the Caribbean coast and the northern border of Mexico. Accumulated rainfall over the last 6 hours is below 10 mm.

Forecast: Isolated variable rainfall is forecast during the morning, with scattered showers over the mountains and coastal areas in the afternoon and evening, in parts of the Caribbean and toward parts of the central-northeast of the Northern Zone. Accumulated rainfall over the 12 hours is expected to range between 10 and 30 mm, with local highs of up to 60 mm.

In the Central Pacific, showers are expected over the mountains in the afternoon, with accumulated rainfall below 30 mm. For the South Pacific, localized downpours with possible thunderstorms are expected in the Corredores Mountains, Coto Brus, and the surrounding Gulf of Dulce, with accumulated rainfall between 15 and 45 mm, with maximum rainfall of up to 80 mm.

The trade winds will occasionally present strong gusts between 50 and 80 km/h, mainly in the Guanacaste mountain range. 

Due to the above, the IMN recommends:

• Caution due to sewage saturation in areas prone to this type of flooding, as well as increased flow in rivers and streams.

• Prepare for thunderstorms and seek shelter in a safe place if strong wind gusts occur or are perceived near storm clouds, due to the possible fall of tree branches, power lines, among other things. These gusts can reach 80 km/h in some isolated cases. 

• Stay informed through social media: Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR, and the website www.imn.ac.cr

Jose Valverde Mora

Meteorologist

DMSA/IMN