The academic year at Cambridge is divided into three terms. The Michaelmas term runs from October to early December. The Lent term runs from January to March. In the Michaelmas and Lent terms there are eight weeks of lectures, classes and seminars. The Easter term begins in April, but there are only four weeks with fewer lectures and classes. This is because examinations are held at the end of May and in early June. The exact dates of each term can be found on the University's website.
The University long vacation begins in mid-June and lasts until the beginning of October. Many people are away at this time and the Faculty provides no teaching or events. The libraries may also open for shorter hours and may close completely for short periods. We do not advise a visit to Cambridge in the spring or summer unless you are intending to stay a full year.