Coimbra in May

April through October gives you the best weather, but each season brings different energy. May and June buzz with student life before summer break - perfect for experiencing authentic university culture. July and August bring heat (often hitting 35°C) but fewer crowds and lower accommodation prices. September rocks for weather and the academic year restart creates infectious excitement. October offers mild days and the grape harvest in nearby Douro. Winter can be gray and rainy, but December's Christmas market in Largo da Portagem adds charm. Avoid the first week of May during Queima das Fitas (student festival) unless you want to party with 40,000 university students.