Yes

you do need a jacket based on the weather in Hyde Park, Sandton, 2196, South Africa 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
51°F11°C & Clear

Wind is 2 mph3 km/h from the North, gusting to 6 mph10 km/h
July 29
5am52°F11°C2 mph4 km/h NorthClear
6am55°F13°C3 mph4 km/h NorthClear
7am57°F14°C3 mph5 km/h NorthClear
8am59°F15°C4 mph6 km/h NorthClear
9am60°F15°C4 mph6 km/h NorthClear
10am60°F15°C4 mph7 km/h NorthClear
11am58°F15°C4 mph7 km/h NorthClear
12pm55°F13°C4 mph6 km/h NorthClear
1pm52°F11°C3 mph5 km/h NorthwestClear
2pm50°F10°C3 mph5 km/h NorthwestClear
3pm48°F9°C2 mph4 km/h NorthwestClear
4pm46°F8°C2 mph3 km/h NorthwestClear
DateLowHighWindDayNight
July 2837°F3°C60°F15°C3 mph5 km/h from NorthClearClear
July 2938°F3°C63°F17°C4 mph7 km/h from NorthwestClearClear
July 3040°F4°C65°F19°C6 mph9 km/h from NorthwestClearClear
July 3140°F5°C62°F16°C7 mph12 km/h from SouthClearClear
August 137°F3°C59°F15°C6 mph9 km/h from NorthClearClear
August 241°F5°C63°F17°C5 mph8 km/h from NorthwestClearMostly Clear
August 343°F6°C66°F19°C5 mph8 km/h from NorthwestClearClear

Yes

Low of 38°F4°C, High of 63°F17°C
Wind: 4 mph7 km/h
Precipitation: None

Support This Page