Yes

you do need a jacket based on the weather in Dublin, Ireland 14 minutes ago

Why? Because looks like it's raining and a jacket will keep you cozy, but you won't break a seat!
55°F13°C & Rain

Wind is 6 mph10 km/h from the Southeast, gusting to 12 mph19 km/h
September 16
7pm55°F13°C9 mph15 km/h SoutheastRain
8pm56°F13°C11 mph18 km/h SoutheastRain
9pm57°F14°C13 mph22 km/h SoutheastRain
10pm58°F15°C15 mph24 km/h SoutheastRain
11pm60°F15°C14 mph23 km/h SouthRain
September 17
12am62°F17°C12 mph19 km/h SouthRain
1am63°F17°C14 mph23 km/h SouthwestDrizzle
2am64°F18°C13 mph21 km/h SouthwestMostly Cloudy
3am64°F18°C13 mph20 km/h SouthwestMostly Cloudy
4am64°F18°C14 mph22 km/h SouthwestPartly Cloudy
5am65°F18°C14 mph23 km/h SouthwestMostly Cloudy
6am65°F18°C14 mph22 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
September 1552°F11°C63°F17°C7 mph11 km/h from WestMostly CloudyRain
September 1655°F13°C67°F19°C13 mph21 km/h from SouthwestMostly CloudyDrizzle
September 1755°F13°C70°F21°C11 mph18 km/h from SouthwestDrizzleDrizzle
September 1855°F13°C65°F18°C7 mph11 km/h from WestRainCloudy
September 1951°F11°C60°F16°C8 mph12 km/h from NorthDrizzleRain
September 2048°F9°C56°F13°C18 mph29 km/h from NortheastDrizzleMostly Cloudy
September 2145°F7°C56°F13°C13 mph21 km/h from NortheastDrizzleMostly Cloudy

Yes

Low of 55°F13°C, High of 67°F20°C
Wind: 13 mph21 km/h
Precipitation: None

Support This Page