Costa Rica
Season running low
In 2026 so far, the reported cases are well below the expected number of cases. Cases are currently increasing, as expected at this time of the year based on trends in previous years.
Data refreshed: 18 June 2026
Dengue cases in 2026
Current year: Reported cases
Current year: Estimated cases (reported cases not available)
Uncertainty: 95% prediction interval (validation-calibrated)
Further analysis
In May 2026, Costa Rica reported 418 dengue cases, well below what we would typically expect for this time of year.
Compared with April 2026, in which 242 cases were reported, this is a similar level of reported cases.
So far in 2026, the country has recorded 1,218 cases-about 0.3x the expected level-so the season is below average to date.
The last month with reported cases is May 2026.
In Costa Rica the average peak month is August.