Yes

you do need a jacket based on the weather in Milnerton, Cape Town, South Africa 1 second ago

Why? Because it's not very warm out!
50°F10°C & Mostly Clear

Wind is 2 mph4 km/h from the Southeast, gusting to 6 mph10 km/h
November 2
3am50°F10°C3 mph4 km/h SoutheastMostly Clear
4am50°F10°C3 mph4 km/h SoutheastClear
5am54°F12°C3 mph4 km/h SoutheastClear
6am58°F15°C4 mph7 km/h SoutheastClear
7am62°F17°C7 mph11 km/h SoutheastClear
8am66°F19°C7 mph12 km/h SouthClear
9am69°F21°C8 mph12 km/h SouthClear
10am72°F22°C8 mph13 km/h SouthClear
11am74°F23°C9 mph15 km/h SouthClear
12pm74°F23°C11 mph18 km/h SouthClear
1pm74°F23°C12 mph19 km/h SouthClear
2pm72°F22°C13 mph20 km/h SouthClear
DateLowHighWindDayNight
November 150°F10°C74°F23°C9 mph15 km/h from SouthClearClear
November 252°F11°C80°F26°C10 mph16 km/h from SouthClearMostly Clear
November 357°F14°C75°F24°C13 mph22 km/h from SouthClearClear
November 458°F14°C77°F25°C14 mph23 km/h from SouthPartly CloudyPartly Cloudy
November 561°F16°C84°F29°C14 mph23 km/h from SoutheastMostly ClearMostly Clear
November 661°F16°C92°F33°C6 mph10 km/h from SouthMostly ClearMostly Clear
November 763°F17°C84°F29°C6 mph9 km/h from WestMostly ClearMostly Clear

Yes

Low of 53°F12°C, High of 80°F27°C
Wind: 10 mph16 km/h
Precipitation: None

Support This Page