Yes

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

Why? Because the wind is offering free, unsolicited face massages!

64°F18°C & Mostly Cloudy

Wind is 14 mph23 km/h from the Southwest, gusting to 25 mph40 km/h

Date	Low	High	Wind	Day	Night
June 8	55°F13°C	65°F18°C	11 mph17 km/h from Southwest	Mostly Cloudy	Mostly Cloudy
June 9	56°F13°C	69°F20°C	12 mph20 km/h from West	Mostly Cloudy	Partly Cloudy
June 10	54°F12°C	72°F22°C	9 mph15 km/h from Southeast	Mostly Clear	Mostly Cloudy
June 11	58°F14°C	68°F20°C	11 mph18 km/h from Southeast	Rain	Mostly Clear
June 12	56°F13°C	76°F25°C	8 mph12 km/h from Southeast	Mostly Clear	Thunderstorms
June 13	56°F13°C	67°F19°C	15 mph24 km/h from Southwest	Partly Cloudy	Mostly Clear
June 14	54°F12°C	68°F20°C	12 mph19 km/h from West	Partly Cloudy	Mostly Clear

Low of 56°F14°C, High of 69°F21°C
Wind: 12 mph20 km/h
Precipitation: 7% rain