Air New Zealand is using morning temperatures to set domestic airfares in September.
Air New Zealand is offering more than 4000 fares for the month with prices linked to 9am temperatures. The "Septemperature" fares are being offered through the airline's Grabaseat website.
At least three regional destinations a day will have special fares set according to the destination's temperature at 9am.
Former weather presenter Tamati Coffey was fronting the promotion which started on Monday with deals for Blenheim, Nelson and Dunedin.
With Blenheim's temperature today hitting four degrees Celsius at 9am airfares were set at $4.
Fares of $6 and $3 were offered for Nelson and Dunedin.
Air New Zealand group general manager for New Zealand and Pacific Louise Struthers said this was the first time Air New Zealand had used the weather to determine fare prices.
Air New Zealand has dropped prices on its regional routes as Australian low cost carrier Jetstar prepares to compete on routes to New Plymouth, Nelson, Palmerston North and Napier from December,
JOHN ANTHONY
Last updated 13:47, September 7 2015