Yes

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

Why? Because it's so gusty, you’re basically doing accidental parkour!
66°F19°C & Mostly Cloudy

Wind is 11 mph18 km/h from the West, gusting to 20 mph32 km/h
July 21
4pm65°F19°C11 mph18 km/h WestDrizzle
5pm65°F18°C12 mph19 km/h WestMostly Cloudy
6pm64°F18°C12 mph20 km/h WestMostly Cloudy
7pm64°F18°C12 mph20 km/h WestMostly Cloudy
8pm63°F17°C12 mph19 km/h WestCloudy
9pm63°F17°C12 mph19 km/h WestMostly Cloudy
10pm63°F17°C12 mph19 km/h WestMostly Cloudy
11pm62°F17°C12 mph19 km/h WestMostly Cloudy
July 22
12am62°F17°C11 mph18 km/h WestMostly Cloudy
1am63°F17°C11 mph17 km/h WestDrizzle
2am63°F17°C11 mph17 km/h WestMostly Cloudy
3am64°F18°C12 mph19 km/h WestPartly Cloudy
DateLowHighWindDayNight
July 2058°F15°C72°F22°C9 mph15 km/h from WestPartly CloudyDrizzle
July 2162°F17°C72°F22°C13 mph21 km/h from WestMostly CloudyDrizzle
July 2259°F15°C71°F21°C5 mph8 km/h from NorthwestDrizzleMostly Clear
July 2358°F15°C74°F23°C9 mph14 km/h from NorthPartly CloudyPartly Cloudy
July 2461°F16°C74°F23°C9 mph14 km/h from SouthwestPartly CloudyMostly Clear
July 2561°F16°C75°F24°C9 mph14 km/h from WestPartly CloudyPartly Cloudy
July 2658°F15°C72°F22°C9 mph14 km/h from WestMostly CloudyMostly Cloudy

No

Low of 63°F17°C, High of 72°F22°C
Wind: 13 mph21 km/h
Precipitation: 18% rain

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