If you believe you will require a visa, you should apply for one at least two months before departure.
To visit New Caledonia, you can apply for either a single-entry or multiple-entry visa.
This is required since many officials will examine the paperwork associated with your visa using various systems.
The processing time for a New Caledonia visa for a short trip can be anything from 15 days to a month or even more. A New Caledonia visa for extended stays requires a minimum processing time of four weeks.
With a tourist visa, you can only stay in New Caledonia for a maximum of 90 days out of every 180-day term. After you have paid for and received your visa, the New Caledonia government will decide whether to allow you to remain in the country for a predetermined amount of time. It would help if you did not assume that you will be granted the maximum time, which is ninety days. This cannot be guaranteed.