UV Index in St. George, Canada

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of St. George, Canada, a place where the climate often fluctuates between the beauty of sunny skies and the risks that come with increased UV exposure. As summer approaches, being mindful of UV levels is vital for preventing sunburn and protecting skin health, particularly during those peak hours when UV radiation soars—reaching a maximum of 10 between 1:00 PM and 2:00 PM. With St. George's continental climate regularly offering bright days, the potential for UV-related health issues heightens. Stay informed and take the necessary precautions to enjoy the sunshine safely!

Hourly UV Index in St. George

As the sun rises, the UV Index gradually climbs, beginning at a mild 1 at 7:00 AM. By 9:00 AM, it reaches 3, prompting early risers to consider sun protection. The intensity peaks at 1:00 PM with a maximum of 10, signaling the most hazardous conditions for unprotected skin. As the afternoon unfolds, the index dips from 9 at 2:00 PM to 6 by 4:00 PM, offering a brief respite. As the day winds down, the UV rays decrease, falling to 2 by 6:00 PM and returning to a safe 1 by 7:00 PM. Stay mindful of these fluctuations to enjoy the sun while safeguarding your skin!

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
07:001low45 min
08:002low45 min
09:003moderate30 min
10:005moderate30 min
11:007high25 min
12:009very high15 min
13:0010very high15 min
14:009very high15 min
15:008very high15 min
16:006high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in St. George

Throughout the year, the UV Index shows significant seasonal variations that influence sun exposure risks for both visitors and residents. From January to March, the index starts low at 2 but rises to 5 by March, indicating moderate exposure risks with burn times decreasing from 45 minutes to 30 minutes. The spring and summer months, particularly April to August, present the highest risks, with UV Index values soaring to 9 and 10 during the peak months of May and June. Here, the burn time drops dramatically to just 15 minutes, categorizing these months as very high risk. September sees a slight decrease to 7 (high exposure) while October and November return to moderate levels with indices of 5 and 4. As winter arrives in December, the UV Index falls to 2, marking a return to low exposure risks. It's crucial for everyone to be aware of these fluctuations: during high-risk months, especially from April to August, it is advisable to limit sun exposure, wear protective clothing, and apply sunscreen regularly to prevent skin damage.

Monthly Maximum UV Index for St. George, Canada

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in St. George. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3458910997542
Data source: Statistical UV Index data for St. George, 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 St. George UV Index with Other Canada Cities

The table above highlights how UV exposure in St. George compares to other major locations across Canada. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
St. George's solar exposure compared to other cities in Canada. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Edmonton UVI235677876421
Calgary UVI234688987421
Montreal UVI245799887532
Ottawa UVI245899887532
Toronto UVI245899997532
St. George2458910997542