Foreign tourists accounted for 103,000 arrivals and 412,000 nights, while registered domestic tourists accounted for 31,000 arrivals and 80,000 nights.
Istria County saw the largest number of nights at 188,000.
The most popular destinations in terms of nights were Poreč, Rovinj, Dubrovnik, Zagreb, Split, Umag and Zadar.
Tourists from Germany, Austria, Slovenia, Italy and Slovakia accounted for the largest number of nights. Most of them stayed in hotels, which registered 210,000 nights, followed by private accommodation (112,000) and campsites (99,000).
HTZ director Kristjan Staničić said the numbers indicated that Croatia could enter the summer season with exceptional results and trends.