Yes

you do need a jacket based on the weather in Navarre, Spain 1 second ago

Why? Because it's quite chilly.
44°F7°C & Mostly Clear

Wind is 7 mph11 km/h from the N, gusting to 15 mph24 km/h
April 18
5pm44°F7°C7 mph11 km/h NMostly Clear
6pm43°F6°C6 mph10 km/h NMostly Clear
7pm42°F6°C6 mph10 km/h NMostly Clear
8pm42°F5°C6 mph10 km/h NClear
9pm40°F4°C4 mph7 km/h NClear
10pm38°F3°C3 mph4 km/h NEMostly Clear
11pm36°F2°C3 mph5 km/h NEClear
April 19
12am35°F2°C3 mph5 km/h NEMostly Clear
1am34°F1°C3 mph4 km/h EMostly Clear
2am35°F2°C3 mph4 km/h EMostly Clear
3am40°F4°C2 mph4 km/h EClear
4am46°F8°C2 mph3 km/h SEClear
DateLowHighWindDayNight
April 1742°F5°C55°F13°C12 mph19 km/h from NMostly CloudyMostly Clear
April 1834°F1°C65°F19°C3 mph5 km/h from SEClearClear
April 1940°F4°C62°F17°C14 mph22 km/h from NClearClear
April 2040°F4°C59°F15°C14 mph22 km/h from NClearMostly Clear
April 2137°F3°C51°F11°C15 mph24 km/h from NPartly CloudyPartly Cloudy
April 2236°F2°C48°F9°C12 mph19 km/h from NMostly CloudyPartly Cloudy
April 2334°F1°C51°F11°C12 mph20 km/h from NPartly CloudyPartly Cloudy

Yes

Low of 34°F1°C, High of 65°F19°C
Wind: 3 mph5 km/h
Precipitation: None

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