Yes

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

Why? Because the wind is harsh and biting!
64°F18°C & Partly Cloudy

Wind is 11 mph18 km/h from the Southwest, gusting to 25 mph40 km/h
November 1
2am65°F18°C11 mph18 km/h SouthwestMostly Clear
3am66°F19°C12 mph20 km/h SouthwestMostly Clear
4am68°F20°C13 mph21 km/h SouthwestMostly Clear
5am68°F20°C13 mph22 km/h SouthwestMostly Clear
6am68°F20°C13 mph21 km/h SouthwestMostly Clear
7am67°F20°C14 mph22 km/h SouthwestMostly Clear
8am66°F19°C13 mph22 km/h SouthwestClear
9am65°F18°C13 mph21 km/h SouthwestClear
10am63°F17°C12 mph20 km/h SouthwestClear
11am61°F16°C10 mph17 km/h SouthClear
12pm59°F15°C9 mph14 km/h SouthClear
1pm58°F14°C9 mph14 km/h SouthClear
DateLowHighWindDayNight
October 3153°F12°C68°F20°C12 mph20 km/h from SouthwestMostly ClearClear
November 148°F9°C76°F24°C6 mph9 km/h from SoutheastClearMostly Clear
November 255°F13°C85°F30°C10 mph16 km/h from EastMostly ClearWindy
November 362°F17°C81°F27°C9 mph15 km/h from EastPartly CloudyPartly Cloudy
November 460°F15°C74°F23°C9 mph15 km/h from SouthDrizzleMostly Clear
November 556°F13°C73°F23°C10 mph16 km/h from SouthwestMostly ClearMostly Clear
November 654°F12°C74°F23°C7 mph12 km/h from SouthMostly ClearClear

Yes

Low of 48°F9°C, High of 76°F25°C
Wind: 6 mph9 km/h
Precipitation: None

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