Yes

you do need a jacket based on the weather in Þrúðvangi 2, 850 Hella, Iceland 1 second ago

Why? Because it's quite chilly.
36°F2°C & Mostly Clear

Wind is 5 mph8 km/h from the N, gusting to 10 mph16 km/h
April 30
10pm34°F1°C5 mph9 km/h NMostly Clear
11pm33°F1°C5 mph8 km/h NPartly Cloudy
May 1
12am32°F0°C5 mph8 km/h NMostly Cloudy
1am31°F-0°C5 mph7 km/h NMostly Cloudy
2am32°F0°C4 mph6 km/h NCloudy
3am34°F1°C4 mph6 km/h NCloudy
4am37°F3°C3 mph5 km/h NCloudy
5am40°F4°C3 mph5 km/h NCloudy
6am43°F6°C2 mph4 km/h NCloudy
7am45°F7°C2 mph3 km/h WCloudy
8am47°F8°C3 mph5 km/h SWMostly Cloudy
9am48°F9°C5 mph8 km/h SWMostly Cloudy
DateLowHighWindDayNight
April 3031°F-0°C50°F10°C5 mph8 km/h from SWMostly CloudyCloudy
May 139°F4°C51°F11°C10 mph16 km/h from SMostly CloudyMostly Cloudy
May 239°F4°C51°F11°C9 mph14 km/h from SEDrizzleRain
May 342°F6°C56°F13°C5 mph8 km/h from SEMostly CloudyDrizzle
May 444°F7°C53°F12°C6 mph10 km/h from SDrizzleRain
May 541°F5°C48°F9°C8 mph12 km/h from SWRainDrizzle
May 639°F4°C51°F11°C11 mph17 km/h from SDrizzleCloudy

Yes

Low of 38°F4°C, High of 51°F11°C
Wind: 10 mph16 km/h
Precipitation: 13% rain

Support This Page