Yes

you do need a jacket based on the weather in 220 Amherst Dr, Orpington BR5 2HW, UK 1 second ago

Why? Because it's not very warm out.
57°F14°C & Rain

Wind is 6 mph9 km/h from the SE, gusting to 15 mph24 km/h
September 8
3am58°F14°C6 mph10 km/h SERain
4am59°F15°C7 mph12 km/h SCloudy
5am61°F16°C7 mph11 km/h SCloudy
6am62°F17°C7 mph11 km/h SRain
7am63°F17°C6 mph10 km/h SDrizzle
8am64°F18°C6 mph10 km/h SRain
9am64°F18°C6 mph10 km/h SMostly Cloudy
10am65°F18°C7 mph11 km/h SWMostly Cloudy
11am66°F19°C7 mph11 km/h SWDrizzle
12pm64°F18°C8 mph12 km/h SWMostly Cloudy
1pm63°F17°C6 mph9 km/h SWMostly Cloudy
2pm61°F16°C5 mph7 km/h SWMostly Clear
DateLowHighWindDayNight
September 757°F14°C66°F19°C7 mph11 km/h from SRainDrizzle
September 853°F12°C64°F18°C11 mph18 km/h from NWCloudyMostly Cloudy
September 950°F10°C64°F18°C14 mph22 km/h from WDrizzleRain
September 1046°F8°C57°F14°C12 mph19 km/h from WPartly CloudyMostly Clear
September 1143°F6°C58°F14°C8 mph13 km/h from NWPartly CloudyMostly Clear
September 1243°F6°C61°F16°C8 mph13 km/h from NMostly ClearMostly Clear
September 1346°F8°C65°F19°C8 mph13 km/h from NWPartly CloudyMostly Clear

Yes

Low of 54°F12°C, High of 64°F18°C
Wind: 11 mph18 km/h
Precipitation: 18% rain

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