Last updated: July 2, 2025
In Port Rowan, Canada, staying informed about the UV Index is crucial for protecting your skin and maintaining overall health. Understanding UV levels helps to prevent sunburn and long-term skin damage, making it essential for everyone, especially during the sunniest hours of the day. With a Dfb climate, Port Rowan experiences diverse seasonal changes, but summer days can bring significant UV exposure risks. During peak hours, the UV Index can reach as high as 10, emphasizing the importance of taking necessary precautions to enjoy the outdoors safely.
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!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Seasonal variations in the UV Index highlight key months for sun safety. January and December present low exposure levels with UV Index values of 2, allowing for safe, extended outdoor activities; however, February and March see a rise to a moderate index of 5, reducing burn time to 30 minutes. The critical period for high UV exposure occurs from April to August, marked by a very high index ranging from 8 to 10, where even brief sun exposure (as little as 15 minutes) can lead to skin damage. September declines to an 8, then drops to 6 in October, transitioning to high and moderate levels in the fall and winter months, respectively. November returns to a moderate index of 4. Visitors and residents are advised to practice sun safety with protective gear and sunblock, particularly during the high-risk months of April through August, to minimize UV-related health risks.
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 |
| 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 |
| Port Rowan | 2 | 5 | 5 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |