Cancun weather essentials. (Editor's Note: The Monthly Precipitation Totals from Weatherunderground to the right are incorrect as of August 7, 2013. With the sun shining on average between 240 and 253 days per year, Cancun is a year-round holiday destination, although certain times of year may be more favorable than others.
you should change the car seat once the baby hits the weight limit or does not fit comfortably anymore. I had to switch to a rear facing convertible seat early with my second because he was a big boy, those go up to 30-40 lbs and can be rear facing until he hits 1yr and you can then turn it around. Infant car seats usually only go to 20 lbs, so it is probably time to get a convertible seat. posted 01/19/2011 by Leslie61.
Most infant seats go up to around 20lbs or so. After that I would recommend getting a convertible car seat. Convertibles go both rear facing and forward facing so when the time comes to switch you won't have to buy a new seat. Its also law in most states that a baby remain rear facing until they are 1 year AND 20lbs and 30 inches. The AAP now recommends to keep them rear facing till they are 2 years.