UV Index in Ushuaia, Argentina

Last updated: July 2, 2025

In Ushuaia, Argentina, understanding the UV Index is vital for safeguarding your skin against harmful ultraviolet rays. With a predominantly ET climate, Ushuaia's unique weather patterns can leave residents and visitors vulnerable to varying UV levels, especially during the height of day. The UV Index, which peaks at a modest level of 1 during midday, underscores the importance of sunburn prevention and maintaining overall skin health. Being aware of these levels can help you take required precautions, ensuring that your outdoor adventures in this stunning southern city are both enjoyable and safe.

Hourly UV Index in Ushuaia

Throughout the day, the UV Index showed a gradual rise, peaking during the midday hours. From 07:00 to 09:00, the index remained at a safe 0, providing a perfect time for morning activities without the worry of UV exposure. As the sun climbed higher, the index increased to 1 from 10:00 through 17:00, indicating a low level of UV radiation, suitable for outdoor enjoyment with minimal protection. However, as the day drew to a close, the UV Index dipped back to 0 by 18:00, signaling a retreat of sunlight and a decrease in UV intensity. Overall, it was a day where individuals could bask in the sun's warmth without significant risk, especially during the midday stretch.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
TimeUVICategoryTime to Burn
07:000low45 min
08:000low45 min
09:000low45 min
10:001low45 min
11:001low45 min
12:001low45 min
13:001low45 min
14:001low45 min
15:001low45 min
16:001low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Ushuaia

The UV Index fluctuates significantly throughout the year, displaying the highest levels during the winter months and late in the year. January and February feature very high UV levels (10 and 8, respectively), with a burn time of only 15 minutes, presenting a high risk for sunburn. Following this, March sees a slight decline to a high category (6), while April and May drop to moderate and low levels (3 and 2, respectively), allowing for longer safe exposure times of 30 and 45 minutes. The summer months (June and July) remain in the low risk category (1), maintaining a burn time of 45 minutes. However, as the year approaches its end, August and September return to moderate levels (3 and 5), before escalating sharply again by November and December, registering extreme UV indexes of 12 and 11 with a burn time reduced to 10 minutes. Visitors and residents should prioritize sun safety during the high-risk months of November and December, as well as January and February, by wearing protective clothing and using sunscreen, while also remaining mindful of the UV levels during spring and summer for balanced sun exposure.

Monthly Maximum UV Index for Ushuaia, Argentina

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Ushuaia. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec1086321135101211
Data source: Statistical UV Index data for Ushuaia, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare Ushuaia UV Index with Other Argentina Cities

The table above highlights how UV exposure in Ushuaia compares to other major locations across Argentina. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Ushuaia's solar exposure compared to other cities in Argentina. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Ushuaia1086321135101211
Buenos Aires UVI141311754468101314
Rosario UVI141311854468111314
Mendoza UVI151412864569121415
Cordoba UVI151312964579121415
San Miguel de Tucuman UVI15141310756710131515