Airplane crash-lands into Hudson River; all aboard reported safe. Story Highlights. NEW: Flight's pilot, C.B. Sullenberger, emerges as hero of miracle on the Hudson. All 155 passengers and crew aboard US Airways Flight 1549 alive, FAA says.
Summer can be very pleasant with temperatures averaging 18Â°C (64Â°F) and often into the low 20s. In recent years London has experienced heatwaves with temperatures well above 30Â°C (86Â°F). This is an ideal time to visit London's parks and open spaces or have a go at swimming and boating in London.
Weather Overview. The weather gradually begins to improve in March in London, UK when the spring season is beginning. At this time of the year, the capital experiences an average temperature of around 8Â°C which increases as the month develops.