Yes

you do need a jacket based on the weather in London, UK 11 minutes ago

Why? Because there are strong winds blowing out there!
64°F18°C & Cloudy

Wind is 11 mph17 km/h from the Southwest, gusting to 25 mph41 km/h
May 24
4pm62°F17°C11 mph17 km/h SouthwestCloudy
5pm61°F16°C11 mph18 km/h SouthwestCloudy
6pm59°F15°C11 mph18 km/h SouthwestCloudy
7pm59°F15°C11 mph18 km/h SouthwestCloudy
8pm58°F14°C12 mph19 km/h SouthwestCloudy
9pm58°F14°C12 mph19 km/h SouthwestDrizzle
10pm58°F14°C12 mph20 km/h SouthwestCloudy
11pm58°F14°C12 mph20 km/h SouthwestMostly Cloudy
May 25
12am58°F14°C11 mph18 km/h SouthwestMostly Cloudy
1am58°F14°C12 mph19 km/h SouthwestMostly Cloudy
2am58°F14°C13 mph21 km/h SouthwestMostly Cloudy
3am59°F15°C13 mph22 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
May 2355°F13°C69°F21°C8 mph13 km/h from WestRainDrizzle
May 2454°F12°C67°F19°C14 mph22 km/h from WestPartly CloudyPartly Cloudy
May 2551°F10°C63°F17°C12 mph19 km/h from SouthwestMostly CloudyDrizzle
May 2655°F13°C66°F19°C11 mph18 km/h from SouthwestRainRain
May 2755°F13°C68°F20°C14 mph22 km/h from WestDrizzlePartly Cloudy
May 2852°F11°C68°F20°C12 mph19 km/h from SouthwestDrizzleMostly Cloudy
May 2952°F11°C73°F23°C8 mph14 km/h from WestMostly CloudyPartly Cloudy

Yes

Low of 54°F12°C, High of 67°F20°C
Wind: 14 mph22 km/h
Precipitation: 12% rain

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