Residents accounted for 77.1% of total arrivals at accommodation establishments in June, while foreigners made up for the reminder 22.9%.
The vast majority of foreign visitors (92.8%) came from Europe, the data showed.
In January through June, tourist arrivals and overnight accommodations rose by 12.7% and 8.1% on the year respectively.
Romanian tourist departures abroad inched up 0.3% on the year in the first six months.