Yes

you do need a jacket based on the weather in Swansea SA1 4QX, UK 1 second ago

Why? Because this drizzle is just a polite way of saying, “Get ready, the big stuff's coming.” and it's so windy, your hat has officially retired from your head!
61°F16°C & Drizzle

Wind is 11 mph18 km/h from the Southwest, gusting to 24 mph39 km/h
September 8
9am61°F16°C11 mph18 km/h SouthwestDrizzle
10am63°F17°C12 mph19 km/h SouthwestPartly Cloudy
11am62°F17°C11 mph18 km/h SouthwestMostly Cloudy
12pm62°F17°C12 mph19 km/h SouthwestPartly Cloudy
1pm61°F16°C11 mph18 km/h SouthwestMostly Clear
2pm60°F16°C10 mph15 km/h SouthwestMostly Clear
3pm59°F15°C7 mph12 km/h SouthwestMostly Clear
4pm57°F14°C6 mph10 km/h SouthwestPartly Cloudy
5pm57°F14°C7 mph11 km/h SouthwestMostly Clear
6pm56°F14°C7 mph11 km/h SouthwestPartly Cloudy
7pm56°F13°C9 mph15 km/h SouthMostly Cloudy
8pm55°F13°C8 mph14 km/h SouthMostly Cloudy
DateLowHighWindDayNight
September 751°F11°C63°F17°C8 mph13 km/h from SouthwestRainRain
September 855°F13°C64°F18°C14 mph23 km/h from SoutheastRainRain
September 956°F13°C63°F17°C12 mph19 km/h from SouthDrizzleDrizzle
September 1053°F12°C58°F15°C15 mph24 km/h from WestRainDrizzle
September 1151°F11°C59°F15°C13 mph21 km/h from SouthwestRainRain
September 1250°F10°C61°F16°C13 mph20 km/h from SouthwestDrizzleRain
September 1355°F13°C65°F18°C17 mph27 km/h from SouthwestRainDrizzle

Yes

Low of 55°F13°C, High of 64°F18°C
Wind: 14 mph23 km/h
Precipitation: 58% rain

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