In 2026 so far, the reported cases are well below the expected number of cases. Cases are currently decreasing, as expected at this time of the year based on trends in previous years.
Data refreshed: 18 September 2026In August 2026, Costa Rica reported 972 dengue cases, well below what we would typically expect for this time of year.
Compared with July 2026, in which 1,129 cases were reported, this is a similar level of reported cases.
So far in 2026, the country has recorded 3,864 cases-about 0.3x the expected level-so the season is below average to date.
The last month with reported cases is August 2026.
In Costa Rica the average peak month is August.
