Last updated: June 2, 2025
Understanding the UV Index in Catalina, Canada is crucial for safeguarding your skin and overall health. With summer and clear skies drawing residents and visitors outdoors, awareness of UV levels can help prevent sunburn and long-term skin damage. Catalina’s Dfb climate brings distinct seasonal variations, but the peak UV exposure—reaching a high of 10 during midday hours—poses significant risks for sunburn, especially between 10 AM and 4 PM. Staying informed about UV Index ratings empowers you to enjoy the sun responsibly while protecting your skin’s health.
The UV Index throughout the day reveals a clear pattern of increasing intensity under the sun. Starting the morning at a moderate level of 2 at 07:00, the index gradually rises to a notable 3 by 08:00. By 09:00, it reaches a peak of 5, but the real intensity hits as it climbs to a significant 7 at 10:00. The sun’s potency peaks around 12:00, soaring to a maximum of 10, with this level sustained until 13:00. As the afternoon unfolds, the intensity begins to wane, dropping to 9 by 14:00 and then tapering down to 7 at 15:00. The evening ushers in a gentle decline, with the UV Index falling to 3 at 17:00, and finally settling at a low 1 by 19:00. Always remember to protect your skin, especially during peak hours when UV exposure is at its highest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal UV changes reflect a gradual increase in the UV Index, peaking during the summer months. Notably, high-risk months include May, June, and July, when the UV Index reaches the very high category, indicating a burn time of just 15 minutes. Visitors and residents should be particularly cautious during this period by adopting protective measures such as wearing sunscreen, hats, and sunglasses to shield themselves from harmful UV radiation. In contrast, the winter months (January, November, and December) exhibit a low UV Index, allowing for longer exposure times of up to 45 minutes without significant risk. Regardless of the month, it's essential to stay informed and adjust outdoor activities accordingly to ensure safety from sun exposure year-round.
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 |
| Catalina | 2 | 3 | 5 | 6 | 8 | 10 | 8 | 7 | 6 | 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 |