Yes

you do need a jacket based on the weather in Swords (Windmill Lands), County Dublin, Ireland 1 second ago

Why? Because there's a refreshing nip in the air!
47°F8°C & Mostly Clear

Wind is 9 mph15 km/h from the Southwest, gusting to 17 mph28 km/h
November 8
7am47°F8°C9 mph15 km/h SouthwestMostly Clear
8am47°F9°C8 mph14 km/h SouthwestMostly Clear
9am49°F9°C8 mph13 km/h SouthwestClear
10am51°F11°C8 mph13 km/h SouthwestClear
11am54°F12°C8 mph13 km/h SouthwestClear
12pm55°F13°C9 mph15 km/h SouthwestMostly Clear
1pm56°F14°C9 mph15 km/h SouthwestMostly Clear
2pm57°F14°C8 mph13 km/h SouthwestMostly Cloudy
3pm56°F13°C8 mph13 km/h SouthwestMostly Cloudy
4pm55°F13°C7 mph12 km/h SouthwestMostly Cloudy
5pm54°F12°C7 mph11 km/h SouthCloudy
6pm53°F12°C7 mph11 km/h SouthCloudy
DateLowHighWindDayNight
November 847°F8°C57°F14°C8 mph13 km/h from SouthwestPartly CloudyDrizzle
November 949°F9°C57°F14°C7 mph11 km/h from SouthwestDrizzleRain
November 1045°F7°C51°F10°C6 mph10 km/h from WestDrizzleDrizzle
November 1146°F8°C58°F14°C18 mph30 km/h from SouthRainRain
November 1249°F9°C56°F13°C6 mph10 km/h from SouthwestDrizzlePartly Cloudy
November 1347°F8°C55°F13°C8 mph13 km/h from EastDrizzleRain
November 1449°F9°C54°F12°C9 mph15 km/h from EastRainDrizzle

Yes

Low of 49°F10°C, High of 57°F14°C
Wind: 7 mph11 km/h
Precipitation: 70% rain

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