Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Prince Rupert, Canada, where the unique Cfb climate offers distinct seasonal weather patterns that influence sun exposure. Being aware of UV levels is essential for preventing sunburn and maintaining long-term skin health, especially during the sunnier months when the index can reach as high as 7 in the early afternoon. With the region's variable cloud cover and proximity to water, it's important to recognize the potential risks of UV radiation, even on seemingly overcast days. By keeping an eye on the UV Index, you can enjoy the natural beauty of Prince Rupert while protecting yourself from harmful effects of the sun.
As the sun rises, the UV Index begins to climb, peaking dramatically at 7 around 1 PM. Starting from a gentle 1 at 7 AM, the intensity gradually increases through the morning hours, reaching a moderate 5 at 11 AM. By 12 PM, it's a robust 6, signaling midday sun exposure should be approached with caution. The highest level of 7 persists from 1 PM to 2 PM, making it crucial to seek shade or apply sunscreen during this time. As the day progresses, UV levels gradually decline, dipping back to 4 by 5 PM, and winding down to 2 as evening settles in. Stay vigilant and protect your skin during peak hours to enjoy the sunshine safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 2 | low | 45 min |
The UV Index varies significantly throughout the year, with the highest risk months being July and May, where the UV Index reaches 8 and 7 respectively, indicating very high to high risk of harm from unprotected sun exposure. In contrast, the lowest risk is observed from November to February, with UV Index ratings of 1 or 2, where sun exposure is considered low risk. As a guideline, visitors and residents should limit sun exposure during the peak months of May to August, particularly during midday hours, and use protective measures such as sunscreen, wide-brimmed hats, and sunglasses to safeguard against skin damage. For winter months, while the UV risk is lower, it’s still wise to take precautions on sunny days when the reflection from snow can increase exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Prince Rupert | 1 | 2 | 3 | 5 | 7 | 7 | 8 | 7 | 5 | 3 | 1 | 1 |
| Edmonton UVI | 2 | 3 | 5 | 6 | 7 | 7 | 8 | 7 | 6 | 4 | 2 | 1 |
| Calgary UVI | 2 | 3 | 4 | 6 | 8 | 8 | 9 | 8 | 7 | 4 | 2 | 1 |
| Montreal UVI | 2 | 4 | 5 | 7 | 9 | 9 | 8 | 8 | 7 | 5 | 3 | 2 |
| Ottawa UVI | 2 | 4 | 5 | 8 | 9 | 9 | 8 | 8 | 7 | 5 | 3 | 2 |
| Toronto UVI | 2 | 4 | 5 | 8 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |