Specific skills needed to excel in the UPSC interview include effective communication, critical thinking, and interpersonal skills. Candidates must articulate their thoughts clearly and confidently while displaying a thorough understanding of current affairs and policy issues. Analytical abilities are essential for addressing complex questions, while a calm and composed demeanor can convey poise under pressure. Additionally, candidates should be aware of personal values and ethics, as integrity plays a vital role in the civil services. Mock interviews and feedback can help candidates refine their skills and build the necessary competencies for the actual interview.