Yes

you do need a jacket based on the weather in 1 Queen St, Warkworth 0910, New Zealand 1 second ago

Why? Because it's not very warm out.
55°F13°C & Partly Cloudy

Wind is 7 mph12 km/h from the SW, gusting to 17 mph27 km/h
April 26
7am55°F13°C8 mph12 km/h SWPartly Cloudy
8am54°F12°C7 mph12 km/h SWMostly Cloudy
9am54°F12°C7 mph12 km/h SWPartly Cloudy
10am53°F12°C7 mph12 km/h SWPartly Cloudy
11am53°F12°C7 mph11 km/h SWPartly Cloudy
12pm53°F11°C6 mph10 km/h SWPartly Cloudy
1pm52°F11°C6 mph10 km/h SWPartly Cloudy
2pm52°F11°C6 mph9 km/h SWPartly Cloudy
3pm52°F11°C6 mph9 km/h SWMostly Cloudy
4pm54°F12°C6 mph10 km/h SWMostly Cloudy
5pm57°F14°C7 mph11 km/h SWMostly Cloudy
6pm59°F15°C10 mph15 km/h SWMostly Cloudy
DateLowHighWindDayNight
April 2554°F12°C66°F19°C11 mph17 km/h from WDrizzlePartly Cloudy
April 2650°F10°C62°F17°C9 mph14 km/h from SWMostly CloudyPartly Cloudy
April 2749°F9°C64°F18°C4 mph7 km/h from EMostly ClearPartly Cloudy
April 2853°F12°C65°F18°C11 mph18 km/h from EPartly CloudyMostly Cloudy
April 2952°F11°C65°F18°C8 mph12 km/h from SPartly CloudyMostly Clear
April 3050°F10°C65°F19°C10 mph16 km/h from WPartly CloudyDrizzle
May 152°F11°C60°F15°C14 mph22 km/h from SWPartly CloudyPartly Cloudy

Yes

Low of 50°F10°C, High of 63°F17°C
Wind: 9 mph14 km/h
Precipitation: 9% rain

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