"It has been very well supported and we are very happy," Ms Clarke said.
This year, the festival, which has been held every second year since 1998, featured more than 300 events over nine days.
Many of them were sold out, she said.
"Feedback to date from people indicates it was a fun experience and people discovered a lot about the environment and the human brain."
While the festival was called Everyday Science - It's all in your head, it was people's wallets which influenced their choices "with any events on saving a bit of money selling out", she said.
Talks on alternative energy proved popular with the public and most events for children sold out.
"But some of our keynote speakers weren't so well supported," Ms Clarke said.
The festival culminated with more than 800 trees planted at Smaills beach, Otago Peninsula.
More than 70 people attended the outing, which aimed to reduce people's carbon footprint.
All proceeds from the outing went to the WWF Malaysia's Orangutan Appeal
