He was given adrenalin and flown to Middlemore Hospital in a serious condition.
The spokesman said the warmer temperatures had contributed to the increase in the number of people getting stung.
Chopper staff have also attended bee sting incidents in Tairua and Waiheke Island.
Three wasp sting callouts were also on Waiheke Island, along with a forestry worker who stood on a giant wasp's nest in Warkworth and another in South Head in March.
In 2018, the helicopter was twice sent to Snells Beach, while the eight bee sting callouts also included Waiheke Island, Kawakawa Bay, Puhoi, Kawhia and Kuaotunu.