Do I need to stay out of the sun completely before I get my rhinoplasty surgery done?

Hello! Thank you for your question! After any surgical procedure, you should be careful with incisions as well as avoidance of direct UVA and UVB rays in order to lessen the chance for hyperpigmentation of the skin and scars, which can take several months to resolve, if it ever does. As the tissue was elevated off of your face along with any other adjunct procedures, minimizing trauma to the area is critical for such a delicate procedure as the facelift. The ability of the affected area to heal has been slowed and you should try to avoid additional swelling to the area. The area will likely be numb for several weeks to months and will be difficult to feel when sunburn is coming on. Typical recommendations include wearing a hat and/or sunblock to the affected area for at least 6-12 weeks following the procedure. Certainly discuss the postoperative instructions with your surgeon, as thoughts differ among surgeons. Hope that this helps! Best wishes!

It is best to not be tan when having any surgical procedures
done. But the recommendation is to stay out of the sun AFTER the surgery until
everything is healed.

It's important to be reasonable and not have a  acute sunburn on the nose prior to undergoing a cosmetic rhinoplasty procedure. If you are going to be outside, simply place sunblock across the nose before and after the rhinoplasty procedure

it's far more important to avoid sun-exposure in the weeks after surgery. Skin that is bruised and then subjected to ultraviolet light can result in permanent pigmentation that is almost impossible to remove.

Sun and Heat can cause swelling.  I'm sure that's why your surgeon ask you to limit sun exposure until you are healed.  Best wishes!