No

you don't need a jacket based on the weather in London, UK 9 minutes ago

65°F18°C & Partly Cloudy

Wind is 2 mph4 km/h from the Southwest, gusting to 9 mph14 km/h
August 6
6am67°F19°C3 mph6 km/h SouthwestPartly Cloudy
7am69°F20°C4 mph7 km/h SouthwestMostly Clear
8am70°F21°C5 mph8 km/h SouthwestPartly Cloudy
9am71°F22°C5 mph8 km/h SouthwestMostly Cloudy
10am72°F22°C5 mph8 km/h SouthwestMostly Cloudy
11am72°F22°C5 mph9 km/h SouthwestCloudy
12pm72°F22°C6 mph10 km/h SouthwestCloudy
1pm71°F22°C7 mph11 km/h SouthwestCloudy
2pm70°F21°C8 mph12 km/h SouthwestCloudy
3pm68°F20°C8 mph12 km/h SouthwestCloudy
4pm66°F19°C7 mph11 km/h SouthCloudy
5pm64°F18°C7 mph11 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
August 553°F12°C73°F23°C4 mph7 km/h from SouthwestMostly CloudyPartly Cloudy
August 657°F14°C74°F23°C10 mph16 km/h from SouthwestMostly CloudyMostly Cloudy
August 759°F15°C73°F23°C5 mph8 km/h from WestCloudyMostly Clear
August 856°F13°C76°F24°C7 mph11 km/h from WestPartly CloudyMostly Clear
August 958°F14°C79°F26°C3 mph5 km/h from WestMostly ClearMostly Clear
August 1062°F17°C83°F28°C4 mph6 km/h from EastMostly ClearPartly Cloudy
August 1165°F18°C79°F26°C7 mph11 km/h from EastPartly CloudyMostly Clear

Yes

Low of 57°F14°C, High of 74°F24°C
Wind: 10 mph16 km/h
Precipitation: None

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