"The moon is coming out quite early at the moment. We've got to kind of work it out to find a full moon that fits with the evening, obviously, and the weather isn't too cold."
Lowe is hoping to see plenty of newcomers at the event, which has been running for about 10 years.
There are gatherings organised in Auckland, Kapiti Coast and Wellington, but some nudist groups will be holding their own gatherings too. People can also go to any nearby beach to get in on the action.
"It feels good and it's something different, and it takes you out of your comfort zone," Lowe said.
"Ordinarily when it's dark no one can actually see you, so it's a good way to get used to being naked in front of other people."
The events were a good way for people to socialise, she said.
"One thing that you learn very quickly as a new naturist is that people talk to your face a lot more than when you're wearing clothes.
"Men have no problem when you're wearing a tight T-shirt in talking to your T-shirt, but when you're not wearing clothes they feel more embarrassed about that, so they're more inclined to actually talk to your face."
Lowe wanted to remind people it was perfectly legal to be naked in public in New Zealand.
"You can actually be naked anywhere in New Zealand."
Details about some of the official gathering locations can be found on the Free Beaches website.