Yes

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

Why? Because sorry, it's too cool for just a hoodie and it's really really huffing out there!
58°F15°C & Windy

Wind is 24 mph39 km/h from the West, gusting to 39 mph62 km/h
September 15
7pm58°F14°C24 mph38 km/h WestWindy
8pm58°F14°C23 mph37 km/h WestWindy
9pm57°F14°C23 mph36 km/h WestWindy
10pm57°F14°C22 mph36 km/h WestWindy
11pm56°F13°C22 mph35 km/h WestWindy
September 16
12am56°F13°C21 mph34 km/h WestWindy
1am56°F13°C20 mph33 km/h WestWindy
2am56°F13°C19 mph31 km/h WestWindy
3am57°F14°C18 mph29 km/h WestWindy
4am58°F14°C17 mph28 km/h WestWindy
5am59°F15°C18 mph29 km/h WestWindy
6am61°F16°C18 mph29 km/h WestWindy
DateLowHighWindDayNight
September 1458°F14°C64°F18°C26 mph41 km/h from WestWindyWindy
September 1556°F13°C64°F18°C18 mph29 km/h from WestWindyDrizzle
September 1658°F14°C66°F19°C23 mph38 km/h from SouthwestDrizzleWindy
September 1762°F17°C67°F20°C18 mph29 km/h from SouthwestWindyMostly Cloudy
September 1861°F16°C68°F20°C9 mph14 km/h from SouthPartly CloudyPartly Cloudy
September 1960°F16°C67°F19°C11 mph18 km/h from SouthwestDrizzleMostly Cloudy
September 2053°F12°C60°F16°C11 mph17 km/h from WestDrizzleDrizzle

Yes

Low of 55°F13°C, High of 64°F18°C
Wind: 18 mph29 km/h
Precipitation: None

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