In ideal conditions, sea freight can take anywhere from 1 to 8 weeks depending upon the distance and other factors.
But still, there are many factors that influence the time taken to deliver the cargo via shipping. Going through customs on both ports, the weather during the transit all affects the time needed to move the goods by sea.
The location is a major factor in transit time since some places are far away than others places. The other factors are the type of goods, the required documentation, weather, and carrier. There can also be additional and unexpected delays during the process.
If you plan to ship your goods for a specific holiday or sales season, make sure that you add at least a week's time on both ends of the process to be safe.