A total of 53 percent of the 228 caravan and camp sites polled by industry organisation SCR Swedish Camping reported that they had already received more bookings for the period between June and August than last year.
And 40 percent said more foreign tourists had organised themselves a spot at one of Sweden's many camp sites compared to last summer.
“We've seen a rising interest for many years,” marketing and communications director Martin Juhos told The Local on Friday.
Enjoying your holidays in a caravan with your family is an already popular – and growing – phenomenon in Sweden, with tourists spending more than 15 million nights at camp sites every year.
The new figures follow a report by Tillväxtverket (the Swedish Agency for Economic and Regional Growth) earlier this week, which revealed that global visitors are spending more cash in the Nordic nation.
Tillväxtverket's figures suggested that foreign holidaymakers and business travellers spent an extra 10.2 billion ($12.4 million) kronor in 2014 compared to the previous year – an increase of 12.5 percent.
And according to SCR Swedish Camping, more than half (52 percent) of visitors from Sweden's most important markets – Norway, Denmark, Germany and the Netherlands – choose to stay at a camp sites during June-August.
“I think that Sweden is the optimal country for campers. The camp sites are often located in beautiful areas. And I guess there's something about wanting to experience the Swedish summer that attracts people,” said Juhos.
The Swedish summer has of course been conspicuously absent so far, with the country experiencing its wettest month of May in decades. But forecasters have promised that higher temperatures are just around the corner.
“Just you wait and see!” laughed Juhos.