Yes

you do need a jacket based on the weather in Bulli NSW 2516, Australia 1 second ago

Why? Because it's cool. Pleasantly cool, but cool.
59°F15°C & Mostly Cloudy

Wind is 10 mph16 km/h from the S, gusting to 19 mph30 km/h
April 20
10am58°F15°C10 mph16 km/h SMostly Cloudy
11am57°F14°C9 mph15 km/h SMostly Cloudy
12pm56°F13°C9 mph14 km/h SPartly Cloudy
1pm55°F13°C9 mph14 km/h SPartly Cloudy
2pm54°F12°C8 mph13 km/h SPartly Cloudy
3pm55°F13°C8 mph12 km/h SPartly Cloudy
4pm55°F13°C7 mph12 km/h SMostly Clear
5pm56°F13°C7 mph12 km/h SMostly Clear
6pm60°F16°C7 mph12 km/h SMostly Clear
7pm64°F18°C8 mph12 km/h SMostly Clear
8pm66°F19°C8 mph13 km/h SMostly Clear
9pm67°F20°C8 mph12 km/h SMostly Clear
DateLowHighWindDayNight
April 1956°F13°C65°F19°C16 mph26 km/h from SWindyPartly Cloudy
April 2053°F12°C69°F21°C7 mph11 km/h from SMostly ClearClear
April 2151°F11°C72°F22°C4 mph7 km/h from NEMostly ClearClear
April 2255°F13°C76°F25°C7 mph11 km/h from NClearPartly Cloudy
April 2356°F13°C76°F24°C6 mph10 km/h from WMostly CloudyPartly Cloudy
April 2451°F11°C67°F20°C9 mph15 km/h from SWClearMostly Clear
April 2550°F10°C64°F18°C9 mph15 km/h from SClearMostly Clear

Yes

Low of 54°F12°C, High of 69°F21°C
Wind: 7 mph11 km/h
Precipitation: None

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