You can get laser any time of year, however, you need to stay out of the sun 2-4 weeks pre and post treatment to reduce the chance of side effects such as dark spots forming. That being stated, most people avoid laser in the summer so they can enjoy the sun. Some areas may still be treated such as underarms or any area that is covered by clothing if staying out of the sun is not an option. Electrolysis on the other hand, can be done year round so don’t forget this option for facial hair, etc if the sun is unavoidable and the area needs to be treated 🙂