Yes

you do need a jacket based on the weather in Wollongong NSW 2500, Australia 1 second ago

Why? Because it's not very warm out and it's really really huffing out there!
54°F12°C & Windy

Wind is 17 mph28 km/h from the Southwest, gusting to 40 mph64 km/h
July 2
7am54°F12°C18 mph29 km/h SouthwestRain
8am54°F12°C17 mph28 km/h SouthwestRain
9am54°F12°C17 mph28 km/h SouthwestRain
10am54°F12°C16 mph26 km/h SouthwestRain
11am54°F12°C16 mph26 km/h SouthwestDrizzle
12pm53°F12°C16 mph26 km/h SouthwestDrizzle
1pm53°F12°C17 mph27 km/h SouthwestDrizzle
2pm53°F12°C17 mph27 km/h SouthwestWindy
3pm53°F12°C16 mph26 km/h SouthwestWindy
4pm53°F12°C16 mph25 km/h SouthwestWindy
5pm53°F12°C15 mph24 km/h SouthwestPartly Cloudy
6pm54°F12°C15 mph24 km/h SouthwestWindy
DateLowHighWindDayNight
July 154°F12°C59°F15°C18 mph29 km/h from SouthwestRainRain
July 252°F11°C59°F15°C13 mph21 km/h from SouthwestDrizzleMostly Clear
July 347°F9°C62°F16°C4 mph7 km/h from SouthwestClearMostly Clear
July 445°F7°C62°F17°C5 mph8 km/h from NorthPartly CloudyCloudy
July 550°F10°C65°F18°C5 mph7 km/h from NorthwestPartly CloudyDrizzle
July 648°F9°C60°F15°C9 mph15 km/h from WestMostly ClearMostly Clear
July 746°F8°C58°F14°C6 mph10 km/h from NorthwestMostly CloudyClear

Yes

Low of 52°F11°C, High of 59°F15°C
Wind: 13 mph21 km/h
Precipitation: 67% rain

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