Is Testudo hermanni a temperate species of Tortoise?

Yes, Testudo hermanni is a temperate tortoise that is native to Europe's Mediterranean Basin. The temperate zone in the Northern Hemisphere is between the tropical and arctic zones, and that is where all members of the Testudo genus are found. This includes T. hermanni, as well as T. horsfieldii, T. graeca, T. marginata, and T. kleinmanni.

The other major group of temperate tortoises is the North American Gopherus species: G. agassizii, G. morafkai, G. berlandieri, G. flavomarginata, and G. polyphemus.

South Africa is also temperate, being between the tropics and the antarctic. It is home to several tortoises, namely Chersina angulata, the Psammobates species (P. geometricus, P. oculifer, and P. tentorius), and the Homopus species (H. areolatus, H. solus, H. boulengeri, H. femoralis, and H. signatus). The southern subspecies of the leopard tortoise (Stigmochelys pardalis pardalis) is also temperate, although the northern subspecies (S. pardalis babcocki) is tropical. There are also two species of hingeback tortoise (Kinixys species) that are temperate. These are K. natalensis and K. lobatsiana. All other hingebacks are tropical.

In South America, the chaco tortoise (Chelonoidis chilensis) is native to the temperate zone. Southern populations of the redfoot tortoise (C. carbonaria), are also temperate, but the bulk of this species' range is in the tropics.

All temperate tortoises are adapted to colder conditions than the tropics. However, the northern temperate zone is colder than the southern one, so Testudo and Gopherus species are more cold-adapted than their southern relatives.

Besides the species mentioned above, all other tortoises are tropical and not cold-adapted.