Yes

you do need a jacket based on the weather in Ballsbridge, Co. Dublin, Ireland 1 second ago

Why? Because it's fairly windy outside!
66°F19°C & Mostly Cloudy

Wind is 13 mph21 km/h from the Southwest, gusting to 24 mph38 km/h
August 26
7am66°F19°C13 mph21 km/h SouthwestMostly Cloudy
8am67°F20°C14 mph22 km/h SouthwestPartly Cloudy
9am68°F20°C14 mph23 km/h SouthwestMostly Cloudy
10am68°F20°C13 mph21 km/h SouthwestPartly Cloudy
11am68°F20°C13 mph21 km/h SouthwestDrizzle
12pm67°F20°C11 mph18 km/h SouthwestDrizzle
1pm66°F19°C11 mph17 km/h SouthwestDrizzle
2pm65°F18°C9 mph14 km/h SouthwestDrizzle
3pm63°F17°C7 mph12 km/h SouthwestDrizzle
4pm61°F16°C5 mph8 km/h SouthwestDrizzle
5pm60°F16°C5 mph8 km/h SouthDrizzle
6pm59°F15°C5 mph8 km/h SouthMostly Cloudy
DateLowHighWindDayNight
August 2559°F15°C68°F20°C11 mph17 km/h from SouthwestPartly CloudyRain
August 2657°F14°C66°F19°C12 mph20 km/h from SouthwestRainDrizzle
August 2754°F12°C64°F18°C13 mph21 km/h from SouthwestDrizzleDrizzle
August 2855°F13°C66°F19°C14 mph22 km/h from WestDrizzlePartly Cloudy
August 2955°F13°C63°F17°C9 mph14 km/h from SouthwestRainDrizzle
August 3053°F12°C62°F16°C15 mph24 km/h from WestDrizzleDrizzle
August 3152°F11°C62°F16°C11 mph18 km/h from WestDrizzleDrizzle

Yes

Low of 57°F14°C, High of 66°F19°C
Wind: 12 mph20 km/h
Precipitation: 72% rain

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