"Organisers of the Whangamata Summer festival have been in contact with police and assured us the events will be running over coming nights come rain, hail or shine.
"It will be up to police to maintain our highly visible presence in the areas, ensuring the holiday locations remain primarily family-friendly locations."
Earlier, campers at Coromandel Gold in Whitianga were preparing for the worst the weather could throw at them.
Rachel Boyes and her two flatmates, Kelsey Morgan and Tessa Davie-Martin, all 20, were preparing to rough it in wet and muddy conditions to see the acts on show at the two-day annual festival.
The Auckland University of Technology trio tried to buy gumboots for the gig, but all were sold out at The Warehouse in Whitianga.
Ms Boyes said there were no showers at the camping ground at the Whitianga Waterways, where festival goers had to be ferried across muddy paddocks on utes and four-wheel drive vehicles. "But we've got baby wipes."
Australian Heath Conklin called the weather "frustrating" but said "a little bit of rain never hurt anyone".
The 27-year-old boat engineer had driven from Auckland with five others to see Shapeshifter and Shihad.
Bronte Linkhorn said the poor weather made Coro Gold a "training run for Glastonbury" - the British festival known for mud as much as the music. "It'll make [Coro Gold] better because it will be more memorable," she said.
Yesterday, the rain slowed congested traffic moving through Tairua, where a one-lane bridge had to be marshalled by volunteers.
What's on
* Rhythm and Vines, Gisborne.
* Coro Gold, Coromandel.
* Exodus 2012 reggae concert, Tauranga.
* Highlife New Year's Eve Experience, Matakana.
* Queenstown New Year's Eve Party, Queenstown.
* Whangamata Summer Festival, Whangamata.
* Glow Party, Paihia.
* Dave Dobbyn Greatest Hits Summer Tour, Waihi Beach.