Sri Lanka is generally a safe destination for solo female travelers. The locals are friendly and willing to help, and it's common to encounter many female tourists. However, it's important to be cautious especially in crowded areas to avoid pickpockets or scams. It is also recommended to follow cultural norms, particularly when visiting religious sites. A good practice is to always let someone know your itinerary and keep in regular touch. Night travel is usually considered safe, but as always, vigilance is essential.