Yes

you do need a jacket based on the weather in Braamfontein, Johannesburg, 2017, South Africa 1 second ago

Why? Because a jacket will keep you cozy, but you won't break a seat!
58°F15°C & Partly Cloudy

Wind is 6 mph9 km/h from the North, gusting to 16 mph26 km/h
September 7
10pm58°F15°C6 mph9 km/h NortheastPartly Cloudy
11pm58°F14°C6 mph9 km/h NortheastPartly Cloudy
September 8
12am57°F14°C6 mph9 km/h NortheastMostly Clear
1am58°F14°C6 mph10 km/h NorthMostly Clear
2am61°F16°C7 mph11 km/h NorthClear
3am65°F18°C8 mph13 km/h NorthClear
4am69°F20°C9 mph14 km/h NorthClear
5am72°F22°C9 mph15 km/h NorthClear
6am74°F24°C9 mph15 km/h NorthMostly Clear
7am76°F24°C9 mph15 km/h NorthMostly Clear
8am77°F25°C9 mph15 km/h NorthMostly Clear
9am77°F25°C9 mph14 km/h NorthMostly Clear
DateLowHighWindDayNight
September 757°F14°C77°F25°C8 mph13 km/h from NorthMostly ClearMostly Clear
September 858°F14°C76°F24°C10 mph16 km/h from NorthPartly CloudyMostly Clear
September 956°F13°C76°F25°C8 mph12 km/h from NorthMostly ClearMostly Clear
September 1057°F14°C78°F26°C5 mph8 km/h from NorthMostly ClearMostly Clear
September 1159°F15°C79°F26°C4 mph7 km/h from NorthPartly CloudyMostly Clear
September 1258°F15°C75°F24°C8 mph13 km/h from NorthClearClear
September 1359°F15°C77°F25°C7 mph11 km/h from NorthwestMostly ClearClear

Yes

Low of 57°F14°C, High of 76°F25°C
Wind: 10 mph16 km/h
Precipitation: 5% rain

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