When the house starts rocking, don't come knocking - not in north Queensland at least.

Obstetricians in Townsville are preparing for a bumper month of births in November - nine months after Cyclone Yasi devastated the region.

Townsville's Mater Women and Children's Hospital CEO John Gilmour said the hospital's maternity unit had received a significant spike in bookings in November.

On average, the unit receives about 90 bookings a month with 105 considered an exceptionally busy month but come November around 120 women are expected to give birth in the hospital.

Yasi, the biggest east coast cyclone in 100 years, struck north Queensland on February 2.