No

you don't need a jacket based on the weather in Tonbridge, UK 4 minutes ago

60°F15°C & Mostly Cloudy

Wind is 7 mph12 km/h from the South, gusting to 14 mph23 km/h
September 27
1pm59°F15°C7 mph11 km/h SouthMostly Cloudy
2pm57°F14°C5 mph8 km/h SouthPartly Cloudy
3pm54°F12°C4 mph7 km/h SoutheastPartly Cloudy
4pm53°F12°C5 mph7 km/h SoutheastMostly Clear
5pm51°F11°C4 mph6 km/h SoutheastMostly Clear
6pm50°F10°C4 mph6 km/h SoutheastMostly Clear
7pm49°F9°C3 mph6 km/h EastPartly Cloudy
8pm49°F10°C3 mph6 km/h EastPartly Cloudy
9pm49°F10°C4 mph6 km/h SoutheastMostly Cloudy
10pm50°F10°C4 mph7 km/h SoutheastMostly Cloudy
11pm50°F10°C4 mph7 km/h SoutheastMostly Cloudy
September 28
12am51°F10°C4 mph7 km/h SoutheastMostly Cloudy
DateLowHighWindDayNight
September 2646°F8°C62°F17°C5 mph8 km/h from SouthMostly CloudyPartly Cloudy
September 2749°F9°C64°F18°C5 mph7 km/h from SouthDrizzlePartly Cloudy
September 2846°F8°C64°F18°C5 mph7 km/h from NorthMostly CloudyMostly Cloudy
September 2943°F6°C66°F19°C3 mph4 km/h from NorthwestPartly CloudyPartly Cloudy
September 3044°F7°C66°F19°C4 mph6 km/h from SouthPartly CloudyPartly Cloudy
October 148°F9°C67°F19°C8 mph12 km/h from SouthMostly CloudyCloudy
October 255°F13°C66°F19°C11 mph18 km/h from SouthwestDrizzleDrizzle

Yes

Low of 49°F10°C, High of 64°F18°C
Wind: 5 mph7 km/h
Precipitation: 37% rain

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