Yes

you do need a jacket based on the weather in Teddington, UK 1 second ago

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it and it's on the windy side!
47°F9°C & Clear

Wind is 9 mph15 km/h from the Southeast, gusting to 21 mph33 km/h
November 29
10am47°F9°C9 mph15 km/h SoutheastClear
11am46°F8°C9 mph14 km/h SoutheastClear
12pm45°F7°C8 mph13 km/h SoutheastClear
1pm44°F7°C8 mph13 km/h SoutheastClear
2pm44°F7°C8 mph13 km/h SoutheastClear
3pm44°F7°C7 mph12 km/h SouthPartly Cloudy
4pm44°F7°C8 mph12 km/h SouthMostly Cloudy
5pm45°F7°C7 mph11 km/h SouthMostly Cloudy
6pm45°F7°C7 mph10 km/h SouthMostly Cloudy
7pm46°F8°C6 mph10 km/h SouthMostly Cloudy
8pm46°F8°C6 mph10 km/h SouthMostly Cloudy
9pm47°F8°C6 mph10 km/h SouthMostly Cloudy
DateLowHighWindDayNight
November 2837°F3°C50°F10°C7 mph11 km/h from SoutheastMostly ClearMostly Cloudy
November 2946°F8°C56°F13°C7 mph11 km/h from SouthCloudyCloudy
November 3050°F10°C56°F13°C10 mph16 km/h from SouthRainMostly Cloudy
December 140°F4°C50°F10°C9 mph15 km/h from NorthwestPartly CloudyPartly Cloudy
December 235°F2°C44°F7°C3 mph5 km/h from SouthRainDrizzle
December 340°F5°C47°F8°C6 mph10 km/h from WestPartly CloudyMostly Cloudy
December 440°F5°C54°F12°C12 mph20 km/h from SouthDrizzleDrizzle

Yes

Low of 46°F8°C, High of 56°F14°C
Wind: 7 mph11 km/h
Precipitation: None

Support This Page