I think that if you want to change the cycle of your animals, you have to do it on a long-term period.
I prefer keep my animals on the same cycle ( nearly ) that they have in madagascar, I've my cold period between july and october, and during the winter, I start the big breeding season, with also a big variation of humidity when it's really cold, I mist them once a day whereas they have 4 to 6 times during the breeding season.
Here is an example of the variation of temperature and humidity on the
average for Madagascar, this is
NOT the temp you have to use, just an example which reflect the global variation of malagasy climate.
Also, it's really different depending on the montagne, the altitude and place where you are in Madagascar.
For example, Temperatures in Montagne d'Ambre (in the north) don't show big variations, but there is still a big variation in humidity level.
On the East coast, some forest in altitude can be really cold during the malagasy winter.
PS : It's really hard for European to understand everything without Help, It would be so nice if there was only ONE way to give temperatures

Maybe we can use Kelvin degrees ?
