Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of Riviere-du-Loup, Canada, where the climate can often lead to varying levels of sun exposure throughout the year. With UV levels peaking at 8 during the summer months, awareness is key for sunburn prevention and safeguarding your skin health. As a city located in a Dfb climate zone, Riviere-du-Loup experiences both cool winters and warm summers, but during sunny days, the risk of harmful UV radiation increases significantly. By monitoring the UV Index, you can take proactive measures to enjoy the outdoors safely while minimizing the long-term risks associated with excessive sun exposure.
Starting off the day at a mild UV Index of 1 at 7:00 AM, the sun gradually rises, pushing the index to 2 by 8:00 AM. As the morning progresses, the UV intensity climbs, peaking at an impressive 8 between 12:00 PM and 1:00 PM—a clear reminder that mid-day sun can be intense. After this zenith, the index begins to decline, dropping back to 6 by 3:00 PM and tapering down to 1 as twilight sets in from 6:00 PM onwards. This hourly UV data illustrates the importance of sun protection during peak hours, especially between 11:00 AM and 1:00 PM when the UV Index indicates significant risk.
| 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 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV index levels fluctuate significantly, indicating the varying risks of skin damage from sun exposure. From January to February, the UV index remains low to moderate, with burn times increasing from 45 minutes to 30 minutes. As spring arrives in March, the UV index climbs to 5, necessitating awareness, as burn times drop to 30 minutes. April marks the transition into high-risk territory with a UV index of 7 and a burn time of just 25 minutes. The peak of UV exposure occurs in the summer months of May through August, where the index reaches a maximum of 9 in June—signifying very high risk—with a minimal burn time of just 15 minutes. September sees a decline to a high index of 6 before dropping to moderate levels in October. The year concludes with low UV exposure in November and December, where burn times extend back to 45 minutes. Visitors and residents are advised to take extra precautions during high-risk months from April to August, such as wearing protective clothing, applying sunscreen regularly, and seeking shade to minimize skin damage.
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 |
| Riviere-du-Loup | 2 | 3 | 5 | 7 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 2 |
| 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 |