Yes

you do need a jacket based on the weather in Hartlepool, UK 1 second ago

Why? Because it's cold. simple as that.
46°F8°C & Partly Cloudy

Wind is 9 mph14 km/h from the NE, gusting to 16 mph25 km/h
April 26
8am47°F8°C9 mph14 km/h NEPartly Cloudy
9am47°F9°C9 mph14 km/h NEPartly Cloudy
10am48°F9°C9 mph14 km/h NEPartly Cloudy
11am48°F9°C9 mph15 km/h NEMostly Clear
12pm47°F8°C9 mph15 km/h EPartly Cloudy
1pm46°F8°C9 mph14 km/h EMostly Clear
2pm46°F8°C8 mph13 km/h EMostly Clear
3pm44°F7°C6 mph10 km/h EMostly Clear
4pm42°F6°C5 mph8 km/h EMostly Clear
5pm41°F5°C4 mph7 km/h EMostly Clear
6pm40°F4°C4 mph6 km/h EMostly Clear
7pm39°F4°C3 mph5 km/h EMostly Clear
DateLowHighWindDayNight
April 2538°F3°C48°F9°C9 mph14 km/h from NEPartly CloudyMostly Clear
April 2637°F3°C49°F10°C9 mph15 km/h from NEPartly CloudyDrizzle
April 2741°F5°C51°F11°C12 mph19 km/h from NDrizzleMostly Clear
April 2840°F4°C58°F15°C13 mph22 km/h from SPartly CloudyPartly Cloudy
April 2944°F7°C60°F15°C13 mph21 km/h from SEPartly CloudyRain
April 3047°F8°C53°F12°C10 mph15 km/h from NERainCloudy
May 148°F9°C55°F13°C14 mph23 km/h from NMostly CloudyMostly Cloudy

Yes

Low of 37°F3°C, High of 49°F10°C
Wind: 9 mph15 km/h
Precipitation: 13% rain

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