Yes

you do need a jacket based on the weather in London, UK 51 seconds ago

Why? Because rain: where every drop seems to aim directly at your glasses and a jacket will keep you cozy, but you won't break a seat!
56°F13°C & Rain

Wind is 8 mph13 km/h from the Southwest, gusting to 18 mph29 km/h
September 13
4am56°F14°C9 mph14 km/h SouthwestDrizzle
5am58°F14°C10 mph17 km/h SouthwestDrizzle
6am60°F16°C10 mph16 km/h SouthwestDrizzle
7am62°F17°C10 mph17 km/h SouthwestMostly Cloudy
8am62°F17°C10 mph16 km/h SouthwestPartly Cloudy
9am64°F18°C10 mph17 km/h SouthwestPartly Cloudy
10am63°F17°C12 mph19 km/h WestPartly Cloudy
11am62°F17°C10 mph16 km/h WestPartly Cloudy
12pm61°F16°C10 mph17 km/h WestPartly Cloudy
1pm61°F16°C9 mph15 km/h WestMostly Clear
2pm59°F15°C8 mph13 km/h WestPartly Cloudy
3pm57°F14°C7 mph12 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
September 1253°F12°C64°F18°C10 mph15 km/h from SouthwestRainMostly Clear
September 1350°F10°C66°F19°C10 mph15 km/h from SouthRainDrizzle
September 1455°F13°C64°F18°C17 mph27 km/h from SouthwestWindyMostly Clear
September 1552°F11°C65°F18°C12 mph19 km/h from WestMostly CloudyDrizzle
September 1655°F13°C68°F20°C14 mph23 km/h from SouthwestDrizzleMostly Cloudy
September 1753°F12°C68°F20°C9 mph14 km/h from WestMostly ClearMostly Clear
September 1848°F9°C67°F19°C5 mph8 km/h from SouthwestPartly CloudyMostly Cloudy

Yes

Low of 50°F10°C, High of 66°F19°C
Wind: 10 mph15 km/h
Precipitation: 68% rain

Support This Page