Yes

you do need a jacket based on the weather in Yallingup WA 6282, Australia 1 second ago

Why? Because a jacket will keep you cozy, but you won't break a seat!
52°F11°C & Mostly Cloudy

Wind is 10 mph16 km/h from the Northeast, gusting to 17 mph28 km/h
September 11
4pm53°F11°C11 mph17 km/h NortheastMostly Cloudy
5pm54°F12°C12 mph19 km/h NortheastMostly Cloudy
6pm56°F13°C14 mph22 km/h NortheastCloudy
7pm57°F14°C15 mph24 km/h NortheastWindy
8pm60°F15°C17 mph27 km/h NortheastWindy
9pm62°F16°C18 mph29 km/h NorthWindy
10pm63°F17°C20 mph32 km/h NorthWindy
11pm65°F18°C21 mph33 km/h NorthWindy
September 12
12am66°F19°C21 mph34 km/h NorthWindy
1am67°F19°C21 mph34 km/h NorthWindy
2am68°F20°C21 mph33 km/h NorthWindy
3am68°F20°C19 mph31 km/h NorthWindy
DateLowHighWindDayNight
September 1150°F10°C68°F20°C18 mph30 km/h from NorthWindyDrizzle
September 1256°F14°C65°F18°C17 mph28 km/h from WestRainDrizzle
September 1350°F10°C58°F14°C30 mph49 km/h from WestRainDrizzle
September 1449°F9°C57°F14°C16 mph26 km/h from SouthwestWindyMostly Cloudy
September 1550°F10°C61°F16°C16 mph26 km/h from NorthwestWindyDrizzle
September 1651°F10°C61°F16°C22 mph36 km/h from WestDrizzleWindy
September 1749°F10°C60°F16°C15 mph23 km/h from SouthwestPartly CloudyMostly Cloudy

Yes

Low of 56°F14°C, High of 65°F19°C
Wind: 17 mph28 km/h
Precipitation: 60% rain

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