It’s raining … giant spiders?!

Spiders that can float on the air and grow to the size of a human hand have been invading the US for more than a decade.

And now they could be touching down in New York — just in time for summer.

Trichonephila clavata — more commonly known as Joro spiders — are native to East Asia and are known for spinning massive sticky webs.

They have recently been confirmed as far north in the US as Maryland, and new research suggests they will land in New York and New Jersey as early as this summer, according to Clemson University Professor David Coyle.

The Big Apple will be happy to hear that many of the well-known ideas about Joro spiders are actually misconceptions, Coyle told The Post Tuesday.

Despite rumors that some Joros will stretch out to the size of a human hand, Coyle insisted that they actually stay between the size of a “nickel and a quarter,” Coyle said.

“Realistically speaking, the body can get to be an inch, maybe an inch and a quarter. Three inches across tops, so the size of a baby’s hand, maybe,” he said.

Females are brightly colored, with yellow bodies with gray or blue stripes, while the males are typically brown.

Male Joros are also usually on the smaller side, Coyle added.

But there’s good news here, too.

They’re pretty docile and don’t threaten humans.

Joro spiders can bite – but only when they feel threatened, Louis Sorkin, an a retired arachnologist, told Gothamist.

The species is also known for its ability to travel using wind currents – though Coyle clarified that the parachuting is limited to a specific time in the spiders’ life cycle.

“That only happens right after the eggs hatch – that has already happened for the year, there’s no more parachuting happening,” he explained.

After the spider eggs hatch in the spring, the poppyseed-sized spiderlings can let out strands of silk, which are then picked up by the wind and allow them to float across the sky, Coyle said.

This “ballooning” effect is “high-risk, high-reward,” as most of the spiderlings don’t actually survive the initial trip, he added.

While Joro spiders are also pretty docile and aren’t a danger humans, New Yorkers should be on the lookout for their webs, which can stretch across multiple feet.

“They like more open areas, where things fly into their web,” Coyle said, noting that they are often found between power lines, or on the edge of natural areas.

They tend to prey on some of the region’s pesky insects, including mosquitos and biting flies.

The Joros likely won’t threaten New Yorkers this summer, but native spider species should probably be on the lookout, the professor continued.

“We’ve observed that where there’s high numbers of Joros, there is a reduced number of native spiders,” he explained.

“They’re having an impact, we’re not exactly sure what that impact is.”

They also prey on some of the region’s pesky insects, including mosquitos and biting flies.

Arachnophobes will be glad to know that the spiders also do not like to be inside, and are more likely to weave their webs on the outside of structures, Coyle told NBC4.