Yes

you do need a jacket based on the weather in Seaford SA 5169, Australia 1 second ago

Why? Because the air feels like the cozy middle ground between summer and winter!
53°F11°C & Clear

Wind is 8 mph13 km/h from the Southeast, gusting to 13 mph21 km/h
October 28
12pm53°F11°C8 mph13 km/h SoutheastClear
1pm52°F11°C7 mph12 km/h SoutheastClear
2pm51°F11°C6 mph10 km/h SoutheastClear
3pm51°F10°C6 mph10 km/h SoutheastClear
4pm50°F10°C6 mph10 km/h SoutheastClear
5pm50°F10°C6 mph10 km/h SoutheastClear
6pm50°F10°C6 mph10 km/h SoutheastClear
7pm50°F10°C6 mph9 km/h SoutheastMostly Clear
8pm49°F10°C5 mph9 km/h SoutheastMostly Clear
9pm51°F11°C5 mph8 km/h EastMostly Clear
10pm56°F13°C3 mph5 km/h EastClear
11pm59°F15°C3 mph5 km/h NorthwestClear
DateLowHighWindDayNight
October 2747°F8°C62°F17°C11 mph17 km/h from SoutheastClearClear
October 2849°F9°C66°F19°C5 mph8 km/h from WestMostly ClearClear
October 2951°F11°C71°F22°C6 mph10 km/h from NorthMostly CloudyMostly Cloudy
October 3056°F13°C68°F20°C10 mph16 km/h from SouthwestPartly CloudyMostly Clear
October 3153°F12°C75°F24°C5 mph8 km/h from NorthClearPartly Cloudy
November 155°F13°C72°F22°C15 mph24 km/h from WestMostly CloudyPartly Cloudy
November 251°F11°C59°F15°C18 mph28 km/h from WestDrizzleWindy

Yes

Low of 49°F10°C, High of 65°F19°C
Wind: 5 mph8 km/h
Precipitation: None

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