The canicular period (drier pattern) we discussed earlier this week is getting a temporary interruption over the next few days. While the mid-summer dry conditions continue overall, it will be diminished across several parts of the country for about two to four days due to some atmospheric changes.
Three factors are combining to temporarily weaken the canicular conditions:
This combination will bring a higher probability of rain to both sides of the country, especially the northern Caribbean and south-central Pacific regions.
Learning about dry periods: If you missed our explanation of this phenomenon, read our complete guide to Costa Rica’s Canicular Period to understand how these temporary interruptions fit into the bigger weather picture.
The interruption won’t last long. Early next week, a weak tropical wave is expected to approach the country, followed by the arrival of a new, drier air mass with fresh Saharan dust. This would once again establish the characteristic hot summer period across Costa Rica.
Partly cloudy to mostly cloudy conditions with high and medium clouds at the beginning of the period. Unstable conditions are expected in Pacific maritime areas, while the Caribbean will see scattered showers and rain.
The Central Pacific, South Pacific, central and western North Pacific, and Central Valley regions will experience mostly cloudy conditions with rain and scattered thunderstorms from Thursday to Sunday. For next week, these showers will become increasingly scattered and shift more toward western areas.
The Caribbean and Northern Zone will see increased low cloudiness with possible occasional isolated showers and downpours, mainly in western areas and across the southern mountains of the Northern Zone. This activity will be most pronounced early in the period, with isolated showers continuing into next week.
Cloudy to partly cloudy conditions in Pacific regions, with possible showers and rain in the western Pacific and coastal areas. The Caribbean and Northern Zone will maintain partial cloudiness with isolated rains.
Here’s what to expect temperature-wise across Costa Rica’s different regions.
High: 32° (89.6°) | Low: 13° (55.4°)
High: 34° (93.2°) | Low: 18° (64.4°)
High: 31° (87.8°) | Low: 15° (59°)
High: 32° (89.6°) | Low: 18° (64.4°)
High: 31° (87.8°) | Low: 16° (60.8°)
High: 33° (91.4°) | Low: 18° (64.4°)
This temporary break in canicular conditions creates a mixed weather pattern that varies significantly by region and timing.
Thursday through Sunday: The most active period with increased rainfall across multiple regions. The Central Pacific, South Pacific, parts of the North Pacific, and Central Valley will see the most significant changes from the recent dry pattern.
Early next week: As the weak tropical wave passes and new Saharan dust arrives, expect a return to more typical canicular conditions with reduced rainfall and clearer skies.
Central Valley: Will experience a notable shift from recent dry conditions to scattered thunderstorms until Sunday, before drying out again next week.
Pacific regions: The western and coastal areas will see the most pronounced changes, with afternoon showers and rain likely during the active period.
Caribbean & Northern Zone: More consistent pattern with increased morning cloudiness and occasional showers, particularly in western areas and southern mountains.
*This forecast is based on the weekly outlook shared by Costa Rica’s National Meteorological Institute (IMN).
