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.
For London in January the daily average maximum temperatures is 7Â°C with the average minimum 3Â°C, while in June the average maximum is 19Â°C with a minimum of 11Â°C. The wettest month for London is October with an average of 87.3mm of precipitation falling while the driest month is March with 46.0mm falling.