Yes

you do need a jacket based on the weather in Ocean Grove VIC 3226, Australia 1 second ago

Why? Because too cold for just a hoodie, too warm for a parka!
46°F8°C & Clear

Wind is 3 mph5 km/h from the Northwest, gusting to 5 mph8 km/h
June 12
9am45°F7°C4 mph6 km/h NorthwestClear
10am44°F7°C4 mph6 km/h NorthwestMostly Clear
11am43°F6°C4 mph6 km/h NorthwestClear
12pm43°F6°C4 mph7 km/h NorthwestClear
1pm42°F6°C5 mph7 km/h NorthwestClear
2pm42°F5°C5 mph8 km/h NorthwestClear
3pm41°F5°C5 mph8 km/h NorthwestClear
4pm41°F5°C5 mph8 km/h NorthwestClear
5pm41°F5°C5 mph7 km/h NorthwestClear
6pm42°F5°C5 mph7 km/h NorthwestClear
7pm44°F7°C5 mph8 km/h NorthwestClear
8pm48°F9°C5 mph8 km/h NorthwestClear
DateLowHighWindDayNight
June 1141°F5°C58°F14°C4 mph6 km/h from NorthwestClearClear
June 1241°F5°C57°F14°C4 mph6 km/h from NorthClearClear
June 1340°F4°C54°F12°C13 mph21 km/h from NorthMostly CloudyDrizzle
June 1446°F8°C57°F14°C11 mph17 km/h from NorthwestPartly CloudyPartly Cloudy
June 1546°F8°C57°F14°C19 mph30 km/h from NorthDrizzleDrizzle
June 1648°F9°C57°F14°C15 mph24 km/h from NorthwestDrizzlePartly Cloudy
June 1746°F8°C58°F15°C11 mph18 km/h from NorthMostly CloudyMostly Cloudy

Yes

Low of 41°F5°C, High of 57°F14°C
Wind: 4 mph6 km/h
Precipitation: None

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