Yes

you do need a jacket based on the weather in El Calafate, Santa Cruz Province, Argentina 1 second ago

Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
40°F4°C & Cloudy

Wind is 5 mph8 km/h from the East, gusting to 9 mph14 km/h
May 8
6pm39°F4°C5 mph8 km/h EastCloudy
7pm39°F4°C5 mph8 km/h EastCloudy
8pm39°F4°C3 mph6 km/h EastCloudy
9pm39°F4°C3 mph5 km/h SouthwestCloudy
10pm38°F4°C4 mph7 km/h SouthwestCloudy
11pm38°F3°C4 mph7 km/h SouthwestMostly Cloudy
May 9
12am37°F3°C5 mph8 km/h SouthwestMostly Clear
1am36°F2°C6 mph10 km/h SouthwestMostly Clear
2am37°F3°C7 mph12 km/h SouthwestMostly Clear
3am37°F3°C8 mph13 km/h WestMostly Clear
4am37°F3°C8 mph14 km/h WestMostly Clear
5am37°F3°C8 mph13 km/h WestMostly Clear
DateLowHighWindDayNight
May 734°F1°C40°F4°C5 mph8 km/h from NortheastCloudyDrizzle
May 835°F2°C43°F6°C4 mph6 km/h from NortheastMostly CloudyPartly Cloudy
May 936°F2°C48°F9°C4 mph6 km/h from SoutheastRainRain
May 1038°F3°C48°F9°C5 mph7 km/h from NortheastMostly ClearDrizzle
May 1138°F3°C45°F7°C11 mph18 km/h from WestMostly ClearPartly Cloudy
May 1236°F2°C44°F7°C4 mph7 km/h from EastPartly CloudyPartly Cloudy
May 1335°F2°C40°F5°C10 mph17 km/h from WestPartly CloudyMostly Cloudy

Yes

Low of 36°F2°C, High of 43°F6°C
Wind: 4 mph6 km/h
Precipitation: 15% rain

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