Los Angeles County hotel occupancy and room rates rose in August compared to a year earlier, reflecting robust tourist business during the summer season, according to data released Tuesday.

Average occupancy rates were 83.5 percent, up from 82.4 percent in July and 81.4 percent in the year ago period, according to PKF Consulting, a hospitality industry consulting firm.

Santa Clarita hotels had the highest occupancy rate in August, at 90.1 percent, while downtown and Pasadena hotels had the lowest occupancy rates at about 76 percent for both submarkets.

Visitors to L.A. County paid, on average, $129.31 per night in August, up 7.4 percent from a year earlier and 1.4 percent from the $127.53 average in July.

All county submarkets with the exception of downtown saw room rates rise in August. Hollywood saw the highest room rate increases of all the submarkets; it was up 20.6 percent to $147.83. Rates in Long Beach rose 11.7 percent to $116.39.

Beverly Hills hotels remained the most expensive in the county in August, at $282.25 for a night’s stay. Second priciest was Santa Monica, at $261.47.

Hotels in the LAX area were the cheapest in the county. The average price for a night stay at an airport hotel was $81.86 in August.