Green Gables reported five per cent more visitors than 2010. ((Canadian Tourism Commission))

Parks Canada officials on P.E.I. are reporting a mixed summer season for visitors.

The number of people visiting the Prince Edward Island National Park was down by 6.3 per cent in the May to August period, compared to the 2010 tourism season.

Campground use was down by 18 per cent. The wet, cool weather is being blamed.

But on the other hand, the number of visitors taking in Parks Canada National Historic sites was up.

Port La Joye -Fort Amherst in Charlottetown saw an increase of 47 per cent.

"With Port La Joye-Fort Amherst, it had benefited from recent upgrades that offer visitors more opportunities to learn and explore the site and enjoy the extended trail system and they also had a number of special events and new interpretative programs there," said Barbara MacDonald, manager of external relations for Parks Canada.

Province House in Charlottetown saw also an increase in visitors of eight per cent, and Green Gables in Cavendish had a five per cent increase.

"At Province House and at Green Gables, it may have had something to do with the increased number of passengers arriving by cruise ship.  And also the royal visit helped generate a lot of media attention and visibility for both of those sites," said MacDonald.

She noted the decrease at the national park this year is not alarming because 2010 was a strong season with warm, dry weather.