Yes

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

Why? Because a jacket will keep you cozy, but you won't break a seat!
53°F12°C & Cloudy

Wind is 10 mph16 km/h from the South, gusting to 16 mph25 km/h
October 25
11pm52°F11°C10 mph15 km/h SouthCloudy
October 26
12am52°F11°C9 mph14 km/h SouthMostly Cloudy
1am52°F11°C8 mph13 km/h SouthMostly Cloudy
2am51°F11°C8 mph13 km/h SouthMostly Cloudy
3am52°F11°C7 mph12 km/h SouthMostly Cloudy
4am52°F11°C7 mph11 km/h SouthPartly Cloudy
5am54°F12°C7 mph11 km/h SouthPartly Cloudy
6am56°F14°C7 mph12 km/h SouthPartly Cloudy
7am58°F15°C8 mph13 km/h SouthPartly Cloudy
8am61°F16°C9 mph14 km/h SouthPartly Cloudy
9am62°F17°C10 mph15 km/h SouthPartly Cloudy
10am63°F17°C10 mph16 km/h SouthPartly Cloudy
DateLowHighWindDayNight
October 2551°F11°C64°F18°C10 mph16 km/h from SouthMostly ClearPartly Cloudy
October 2650°F10°C65°F18°C8 mph12 km/h from NorthwestMostly ClearMostly Clear
October 2753°F12°C70°F21°C9 mph15 km/h from SouthMostly ClearMostly Clear
October 2858°F14°C70°F21°C14 mph23 km/h from SouthMostly ClearMostly Clear
October 2957°F14°C74°F24°C11 mph18 km/h from SouthClearClear
October 3059°F15°C73°F23°C9 mph14 km/h from SouthMostly ClearPartly Cloudy
October 3157°F14°C67°F20°C9 mph14 km/h from SouthwestPartly CloudyMostly Clear

Yes

Low of 50°F10°C, High of 65°F19°C
Wind: 8 mph12 km/h
Precipitation: None

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