How Long Does it Take for Python Eggs to Hatch (and the Survival Rate)?

If you are breeding pythons or your pet python has unexpectedly laid eggs, one of the first questions on your mind is probably how long you will be waiting for them to hatch. The incubation period varies by species, but most python eggs take between 50 and 70 days to hatch under the right conditions.

Incubation Times by Species

Different python species have different incubation periods. Here is what to expect from the most commonly kept species.

Ball pythons have one of the most predictable incubation periods. Their eggs typically hatch in 55 to 60 days when incubated at the proper temperature. Ball pythons are the most commonly bred pet python, so there is a wealth of breeding data available for this species.

Burmese pythons take a bit longer, with eggs usually hatching in 60 to 70 days. Given the large clutch sizes (20 to 80+ eggs), Burmese python breeding is typically left to experienced keepers.

Reticulated pythons have a similar incubation period of 60 to 70 days. These are the longest snakes in the world, and their eggs are correspondingly large.

Green tree pythons hatch in about 45 to 55 days, which is on the shorter end for pythons. Their smaller egg size contributes to the faster development time.

Carpet pythons typically take 50 to 60 days to hatch. They are popular among breeders because they come in a wide variety of patterns and colors.

The Role of Temperature in Incubation

Temperature is the single most important factor in determining how long python eggs take to hatch and whether they develop successfully. Most python species do best when their eggs are incubated at 88 to 90 degrees Fahrenheit (31 to 32 degrees Celsius).

Eggs incubated at slightly lower temperatures will still develop, but they take longer to hatch and have a higher risk of developmental problems. Eggs kept too warm can develop too quickly, which can also lead to defects or death. Consistency is crucial. Even small temperature fluctuations can affect the developing embryos.

This is why many breeders use artificial incubators with thermostats rather than relying on maternal incubation. An incubator gives you precise control over temperature and humidity, which maximizes your hatch rate.

Maternal Incubation vs. Artificial Incubation

Pythons are unique among snakes because many species practice maternal incubation. The mother coils around her eggs and uses muscle contractions (shivering thermogenesis) to generate heat. This is a remarkable behavior that can maintain egg temperatures within a degree or two of the ideal range.

However, maternal incubation has some drawbacks for breeders. The mother will not eat during the entire incubation period, which can last two months or more. This puts significant stress on her body, and she may take months to recover her body weight afterward.

Artificial incubation allows the mother to start eating again right away after laying, which speeds up her recovery. Most breeders gently remove the eggs within a day or two of laying and place them in an incubator. The eggs are usually set in a container with damp vermiculite or perlite to maintain proper humidity.

Signs That Eggs Are About to Hatch

As hatching time approaches, you will notice some changes in the eggs. They may start to dimple or collapse slightly, which is normal and indicates that the baby inside is absorbing the remaining yolk. Some eggs may develop small beads of moisture on the surface.

When the babies are ready, they use a special egg tooth (a small, sharp projection on their snout) to slice through the leathery shell. This process is called pipping. Once the first slit appears, the baby may take anywhere from a few hours to a full day to fully emerge. Do not try to help them out of the egg, as they need this time to absorb the remaining yolk sac.

It is common for eggs in the same clutch to hatch over a period of 24 to 48 hours. If some eggs have not pipped after 72 hours and the rest of the clutch has hatched, you can carefully make a small slit in the shell to check on the baby inside. For more on python breeding, see our article about how often pythons lay eggs.

Survival Rates for Python Eggs

Under proper incubation conditions, hatch rates for python eggs are generally quite good. Experienced breeders typically see 80 to 95 percent hatch rates for ball pythons. Rates vary for other species, but proper temperature, humidity, and egg handling practices make a big difference.

Infertile eggs (called slugs) are common in most clutches. These are usually easy to identify because they are smaller, yellowish, and may develop mold more quickly than fertile eggs. It is normal for a clutch to contain a few slugs alongside viable eggs.