As a general rule, arrive at the airport no later than two hours before your domestic flight is scheduled to depart. This is somewhat later than the typical suggestion of three hours for an international flight.
Oxford: Annual Weather Averages. July is the hottest month in Oxford with an average temperature of 16Â°C (61Â°F) and the coldest is January at 4Â°C (39Â°F) with the most daily sunshine hours at 9 in June.
Based on the tourism score, the best time of year to visit Oxford for warm-weather activities is from mid June to mid September. Temperature The warm season lasts for 4.1 months, from May 19 to September 23, with an average daily high temperature above 74Â°F.