Yes

you do need a jacket based on the weather in Milnerton, Cape Town, South Africa 21 seconds ago

Why? Because sorry, it's too cool for just a hoodie!
56°F13°C & Partly Cloudy

Wind is 9 mph14 km/h from the South, gusting to 18 mph29 km/h
September 6
8pm56°F13°C9 mph14 km/h SouthMostly Cloudy
9pm55°F13°C9 mph14 km/h SouthMostly Cloudy
10pm55°F13°C9 mph14 km/h SouthMostly Cloudy
11pm55°F13°C9 mph15 km/h SouthMostly Cloudy
September 7
12am55°F13°C9 mph14 km/h SouthMostly Cloudy
1am54°F12°C8 mph13 km/h SouthMostly Cloudy
2am55°F13°C8 mph13 km/h SouthPartly Cloudy
3am58°F14°C9 mph14 km/h SouthPartly Cloudy
4am61°F16°C10 mph15 km/h SouthPartly Cloudy
5am65°F18°C10 mph17 km/h SouthMostly Clear
6am67°F19°C12 mph19 km/h SouthMostly Clear
7am69°F21°C13 mph21 km/h SouthClear
DateLowHighWindDayNight
September 654°F12°C70°F21°C13 mph20 km/h from SouthMostly ClearClear
September 753°F12°C79°F26°C4 mph6 km/h from SouthClearClear
September 855°F13°C74°F23°C7 mph11 km/h from NorthwestMostly ClearPartly Cloudy
September 956°F13°C69°F21°C4 mph6 km/h from WestPartly CloudyPartly Cloudy
September 1057°F14°C70°F21°C11 mph17 km/h from SouthPartly CloudyMostly Clear
September 1156°F13°C72°F22°C7 mph12 km/h from SouthMostly CloudyMostly Cloudy
September 1256°F14°C69°F20°C5 mph8 km/h from SouthDrizzlePartly Cloudy

Yes

Low of 54°F12°C, High of 79°F26°C
Wind: 4 mph6 km/h
Precipitation: None

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