Last updated: July 2, 2025
In Marystown, Canada, being aware of the UV Index is essential for protecting your skin and health. Understanding UV levels can significantly reduce your risk of sunburn and long-term skin damage, making it crucial for residents and visitors alike. With Marystown's Dfc climate, characterized by cool summers and a mix of cloudy and sunny days, UV exposure can still reach concerning levels—peaking as high as 8 in midday. Stay informed about the UV Index to enjoy the outdoors safely and keep your skin in top condition!
As the sun rises, the UV Index gradually climbs, starting at a mild 1 at 07:00. By 09:00, it reaches 4, signaling the beginning of a more significant UV exposure. The real intensity begins at 10:00, peaking at 8 between 12:00 and 14:00, ensuring that midday sun-seekers are well advised to apply sunscreen and seek shade. The afternoon sees a slight decline, with the index dropping back to 6 at 15:00 and continuing its descent to 3 by 17:00. As evening approaches, the UV Index returns to a safe 1 by 18:00, bringing an end to the day's sun exposure. Remember, during those peak hours, protection is key!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure levels fluctuate significantly, affecting both residents and visitors. From January to March, the UV Index starts low but peaks to a moderate level in March with an index of 5, indicating a burn time of 30 minutes. April marks a shift, as the index rises to 7 (high exposure), and in the height of summer, May through August, it reaches very high levels, particularly peaking at 9 in June with a burn time of only 15 minutes. September sees a decrease to 6 (high), while October and November return to moderate levels of 4 and 3, respectively. By December, UV exposure is minimal again, with an index of 1. Visitors and residents should exercise caution and protection from April through August, the high-risk months for UV exposure, ensuring to use sunscreen, wear protective clothing, and limit sun exposure during peak hours to stay safe.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Marystown | 2 | 3 | 5 | 7 | 8 | 9 | 8 | 8 | 6 | 4 | 3 | 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 |