The southern hemisphere's largest agricultural event will be a little warmer this year.

Thousands are expected to flock to Fieldays at Mystery Creek in the Waikato this morning, with more than 1,000 exhibitors ready to show off their products and services.

The opening will end a 17-month hiatus after the June event was postponed this year, due to uncertainties around Covid restrictions..

National Field Days Society CEO Peter Nation told Kate Hawkesby the sun is starting to come up, which is pretty unusual for Fieldays, given it's usually mid-winter.

He says they have 21 degree weather for the next four days, with a little bit of rain today which is expected to clear and everyone is excited.

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