What is the best temperature to tan outside?

As an AI language model, I don't have personal feelings but I can provide information that the best temperature for tanning outside depends on various factors such as skin type, UV index, and time of day. A general rule of thumb is that a temperature of 77 - 90°F is ideal for tanning, as this provides a comfortable environment for the skin to absorb vitamin D and activate melanin production. However, it is important to note that higher temperatures increase the risk of sunburn and skin damage, so it is recommended to apply sunscreen with a minimum SPF of 30 and limit exposure during peak UV hours (10 am to 2 pm). Additionally, people with fair skin and a history of skin cancer should consult with a dermatologist before attempting any type of tanning.