Yes

you do need a jacket based on the weather in Portugal 1 second ago

Why? Because the wind could blow a wig clean off your head!
86°F30°C & Clear

Wind is 11 mph18 km/h from the Northwest, gusting to 21 mph33 km/h
August 26
9am87°F30°C12 mph19 km/h NorthwestClear
10am88°F31°C13 mph21 km/h NorthwestClear
11am87°F31°C14 mph23 km/h NorthwestClear
12pm85°F30°C15 mph24 km/h NorthwestClear
1pm82°F28°C15 mph25 km/h NorthwestWindy
2pm79°F26°C15 mph24 km/h NorthwestClear
3pm74°F23°C14 mph22 km/h NorthwestClear
4pm70°F21°C13 mph21 km/h NorthwestClear
5pm67°F20°C12 mph19 km/h NorthwestClear
6pm66°F19°C11 mph18 km/h NorthwestClear
7pm65°F18°C11 mph18 km/h NorthwestClear
8pm64°F18°C12 mph19 km/h NorthwestClear
DateLowHighWindDayNight
August 2563°F17°C88°F31°C10 mph17 km/h from NorthwestClearClear
August 2661°F16°C79°F26°C14 mph23 km/h from NorthwestPartly CloudyPartly Cloudy
August 2762°F17°C78°F25°C12 mph20 km/h from NorthwestMostly ClearMostly Clear
August 2859°F15°C81°F27°C10 mph16 km/h from NorthwestMostly ClearMostly Clear
August 2962°F17°C85°F30°C10 mph16 km/h from NorthwestClearMostly Clear
August 3063°F17°C83°F28°C12 mph19 km/h from NorthwestMostly ClearMostly Clear
August 3159°F15°C77°F25°C13 mph21 km/h from NorthwestPartly CloudyMostly Clear

No

Low of 61°F16°C, High of 80°F27°C
Wind: 14 mph23 km/h
Precipitation: None

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