Yes

you do need a jacket based on the weather in Auckland, New Zealand 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it and the wind is offering free, unsolicited face massages!
56°F14°C & Cloudy

Wind is 10 mph16 km/h from the East, gusting to 22 mph36 km/h
August 3
9pm56°F14°C10 mph16 km/h EastCloudy
10pm57°F14°C11 mph18 km/h EastCloudy
11pm57°F14°C11 mph18 km/h EastCloudy
August 4
12am56°F13°C10 mph17 km/h EastCloudy
1am55°F13°C10 mph16 km/h EastCloudy
2am53°F12°C9 mph15 km/h EastCloudy
3am52°F11°C9 mph14 km/h EastCloudy
4am52°F11°C9 mph14 km/h EastCloudy
5am51°F11°C9 mph15 km/h EastCloudy
6am50°F10°C8 mph13 km/h EastCloudy
7am50°F10°C8 mph14 km/h SoutheastCloudy
8am49°F10°C9 mph15 km/h SoutheastCloudy
DateLowHighWindDayNight
August 342°F5°C57°F14°C8 mph13 km/h from EastCloudyCloudy
August 448°F9°C58°F15°C15 mph24 km/h from EastCloudyCloudy
August 552°F11°C60°F15°C14 mph22 km/h from EastCloudyCloudy
August 652°F11°C61°F16°C12 mph19 km/h from NortheastDrizzleRain
August 752°F11°C60°F15°C14 mph23 km/h from NorthwestRainDrizzle
August 848°F9°C57°F14°C12 mph19 km/h from SouthDrizzlePartly Cloudy
August 947°F8°C56°F13°C11 mph17 km/h from SoutheastPartly CloudyMostly Cloudy

Yes

Low of 48°F9°C, High of 58°F15°C
Wind: 15 mph24 km/h
Precipitation: 27% rain

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