KATHARINE SCHROEDER FILE PHOTO | Papo Vazquez, left, with Willie Williams on saxophone at Raphael Vineyards during last year’s Winterfest.

It’s that time of year again when visitors from across the Northeast flock to Long Island Wine Country for Winterfest Jazz on the Vine.

The six-weekend jazz-and-wine celebration kicked off Jan. 25 with a media event and party at Hotel Indigo in Riverhead, with shows booked at select winery tasting rooms Feb. 9 and 10. The festival runs through the weekend of March 16 and 17.

Now in its sixth year, Winterfest has helped the local wine region evolve from a seasonal tourist attraction to a year-round getaway, boosting business at local hotels, restaurants and B&Bs, area businesspeople say.

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In addition to attracting visitors to tasting rooms during traditionally slow months, Winterfest has proved a factor in the North Fork’s recognition as a top wine destination, said Rob Salvatico of the Hotel Indigo. “It used to be that roughly after Thanksgiving you could shut your doors until mid- to late April or May,” Mr. Salvatico said. “Now the weekends are rocking from Valentine’s straight through Saint Patrick’s Day. There’s a lull during Passover and Easter, but then it starts to pick right back up again.”

Mr. Salvatico said from a revenue perspective the numbers Winterfest brings to the region are enough to transform a winter Saturday to a summer Saturday, and last year’s event brought nearly 10,000 visitors to the North Fork over the six weeks.

“Jazz on the Vine is the theme of Long Island Winterfest,” he said, “I don’t think they intended for it to always be jazz, but it was so popular that it’s become a fixture. If you’re a jazz enthusiast, this is going to become a destination for your yearly jazz jaunts.”

He said the popularity of Winterfest hit a new high in 2012 for it’s fifth year anniversary, when Hotel Indigo held a kickoff showcase event for the first time in their ballroom, and supper-style events throughout the six weeks.

“On Saturday nights the musicians would come back to the Hotel Indigo and have jazz jam sessions in our bistro and it was so popular we had to turn people away,” he said. “Every weekend was just wild.”

This year’s event shows no signs of slowing down, according to the president of the Long Island Wine Council trade group, Ron Goerler.

“We have the most acts ever this year,” Mr. Goerler said. “We chose 72 acts to perform at 30 wineries over six weeks. We had 250 people apply to play during Jazz on the Vine this year, so that shows just how much it’s growing.”

Mr. Goerler said the region used to get money from Suffolk County and New York State to fund the festival, but wineries had to charge cover fees for events after grants began drying up.

But that didn’t stop people from visiting, he said.

“Last year we had a record 7,500 people come out for the event and with the region being named [by Wine Enthusiast magazine] one of the top four wine regions in the world to visit in 2013, I’m looking forward to seeing how many people come out this year,” Mr. Goerler said.

The event brought people from as far south as Philadelphia and as far north as upper Westchester and Connecticut, along with folks from New York City and New Jersey, according to Mr. Salvatico, who said Winterfest has “without question” been part of Hotel Indigo’s success through 2012.

“Winterfest actually gave birth to our having live music on Fridays and Saturdays,” he said. “We do that throughout the year now. Anyone can play Muzak all day, but having live music a couple times a week adds an air of elegance and style to the facility. It’s an amenity for our guests and a draw for people locally to come have dinner with us.”

gvolpe@timesreview.com