Singkawang can be relatively safe for a solo female traveler who exercises general caution. Criminal activities are low compared to other regions, however, language barriers and difference in cultural norms might pose challenges. Always respect local customs, and be mindful of your belongings. Public transportation is reliable but do avoid unregulated forms. If possible, avoid isolated areas during night time. Ensure you have local emergency numbers on speed-dial and stay in touch with a trusted contact back home.