UV Index in Williams Lake, Canada

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Williams Lake, Canada, where the sun’s rays can be particularly intense during the summer months. With typical UV levels peaking at 8 around midday, being aware of these fluctuations is vital for preventing sunburn and maintaining overall skin health. Williams Lake’s Dfb climate means that while winters can be harsh, summers bring clear skies and increased UV exposure risks. By staying informed about the UV Index, you can protect yourself and enjoy the beautiful outdoor scenery safely!

Hourly UV Index in Williams Lake

As the sun rises at 7:00 AM, the UV Index starts low at 1, gradually climbing to a moderate 2 by 8:00 AM. The intensity continues to increase, hitting 3 by 9:00 AM and reaching 5 at 10:00 AM. The peak of the day arrives at 12:00 PM with a solid 7, before soaring to a high point of 8 by 1:00 PM and remaining there until 2:00 PM. The UV Index then begins to decline, dropping to 7 by 3:00 PM, 5 by 4:00 PM, and further falling to 3 at 5:00 PM. As daylight fades, the index softens to 2 by 6:00 PM and finally returns to 1 by 7:00 PM. Staying protected from the sun is important as the midday hours present the highest UV levels!

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
11:006high25 min
12:007high25 min
13:008very high15 min
14:008very high15 min
15:007high25 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Williams Lake

Throughout the year, UV index levels exhibit significant seasonal variation, impacting skin exposure risk. The highest risk months occur from May to August, when the UV index reaches between 7 and 8, categorized as high to very high, with a reduced burn time of just 15 minutes. Conversely, during the winter months, from December to February, the UV index remains low to moderate, allowing for longer exposure times of up to 45 minutes in January and November. Residents and visitors should be particularly vigilant during the summer months, using sun protection such as sunscreen, hats, and protective clothing, and limiting direct sun exposure during peak hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Williams Lake, Canada

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Williams Lake. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec234578886421
Data source: Statistical UV Index data for Williams Lake, 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 Williams Lake UV Index with Other Canada Cities

The table above highlights how UV exposure in Williams Lake 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.
Williams Lake's solar exposure compared to other cities in Canada. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Edmonton UVI235677876421
Williams Lake234578886421
Calgary UVI234688987421
Montreal UVI245799887532
Ottawa UVI245899887532
Toronto UVI245899997532