Turtle eggs generally take about 45 to 70 days to hatch, depending on the species, nest temperature, humidity, and clutch size. Incubation times can vary from around 40 up to 80 days in different regions and conditions. For example, in warmer climates, incubation tends to be shorter, while cooler temperatures slow development

. Hatchlings use a temporary egg tooth called a caruncle to break out of the eggshells and then may take 3 to 7 days to dig their way to the surface of the sand. They usually emerge at night to avoid predators

. In summary:

• Typical incubation period: 45 to 70 days (can range 40–80 days)
• Influencing factors: species, nest temperature, humidity, clutch size
• Hatchlings emerge mostly at night after breaking out of eggs
• Digging out of the nest can take several days after hatching

This incubation period applies primarily to sea turtles, but many freshwater and terrestrial turtles have similar ranges, though some species with embryonic diapause can take much longer