It depends on what temperature you mean by "hot" and which oil you're referring to. If you're in the band of temperatures in which water produces the leidenfrost effect you are at a good temperature to add oil, if it's too hot you'll know and if it's too cool you'll know if you test your pan with a drop of water before you add the oil and begin cooking.

Oil by itself won't spatter, that's caused by water cooking off. Butter will spit because it's got water in it. Reused fry oil and things like that can also, because they tend to have some fried food bits holding moisture still in there. But just pure oil no.

Hot as in 212-350F, not 450F+

Side note, many people cook with way too much heat.