Short answer: Southeast Asia: $20-40/day. Latin America: $25-45/day. Europe: $40-80/day. Japan: $60-100/day.
Typical 2026 backpacker budgets by region: Southeast Asia $20-40/day (hostel + street food). Latin America $25-45/day. Eastern Europe $30-50/day. Western Europe $40-80/day. Japan/Korea $60-100/day. USA/Canada $70-120/day. Western Australia $70-130/day.