In July the fall was steeper at 20 percent, while the total for seven months was down 24 percent.
Western Europe, a key market for the island was down 16.4 percent to 18,093 tourists but arrivals from UK steadied with a five percent rise to 9,966 arrivals compared to August last year, the Sri Lanka Tourist Board has reported.
Germany was down 29 percent to 2,307 arrivals while strict advisories by France slashed its numbers to 771 arrivals, from 2,461 last August.
Netherlands fell 25 percent to 1,320.
With a relaxation of some European travel advisories, the industry is expecting a slight upturn later in the year as the country enters the peak winter season.
Officials are hoping that visitors from France in particular would increase in the next 2-3 months following a full relaxation of its travel advisory on Sri Lanka.
The s