“The six species studied here have preferred temperatures of 30-33°C, and other species of Chamaeleo studied similarly fall into this rather narrow range (C. namaquensis, 33°C, C. dilepis, 31°C [6]; C. africanus, 31°C, C. chamaeleon, 32°C [3]. Preferred temperatures of 25°C and 29°C have been reported for C. pumilus and C. namquensis [8], respectively, but these may be 24 h measurements and include inactive periods.”…
https://compphys.bio.uci.edu/bennett/pubs/155.pdf
https://compphys.bio.uci.edu/bennett/pubs/155.pdf