Last updated: July 2, 2025
Understanding the UV Index in Cullman, United States, is essential for protecting your skin and maintaining overall health. With sunlight being both a source of vitamin D and a potential risk factor for sunburn and skin diseases, staying informed about UV levels can help you enjoy the outdoors safely. Cullman's humid subtropical climate often leads to high UV exposure, especially during peak hours when the index can soar to 11. Being aware of these fluctuations can guide your sun safety strategies, ensuring you stay protected as you soak in all that beautiful Alabama sunshine.
The UV Index for the day showcases a dynamic rise and fall, peaking at a remarkable 11 around 1 PM. Early risers will note a gentle start with values of 1 at 7 AM, slowly increasing to 2 by 8 AM. As the sun continues its ascent, the index escalates rapidly, reaching 4 by 9 AM and 7 by 10 AM. The intensity peaks at 12 PM, hitting a stunning 10, and shortly after, the day's highest value of 11 at 1 PM. As the afternoon wanes, the UV levels begin to decline, dropping to 8 at 3 PM, and further decreasing to 3 by 5 PM, before settling back to a safe 1 by 6 PM and 7 PM. Pay attention to this pattern, as it highlights the hours when sun safety is crucial!
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV levels, significantly impacting exposure for both residents and visitors. From January to April, the UV Index steadily increases from a moderate level of 4 in January to a very high level of 10 in April, indicating a critical period for sun safety as March and April experience burn times of just 15 minutes. May and June maintain extreme UV conditions with an index peaking at 11, resulting in a mere 10-minute burn time—the highest risk months of the year. July continues with similar extremes before a gradual decline starts in August, with the index at 10. The fall months, September and October, still present very high UV levels (up to 9), but burn times increase back to 15-25 minutes. By November and December, exposure returns to moderate levels of 4-6 with longer burn times of 25-30 minutes. Visitors and residents should take proper precautions from March through August, wearing sunscreen, protective clothing, and seeking shade during peak sunlight to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicago UVI | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| Brooklyn UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| New York City UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Cullman | 4 | 6 | 8 | 10 | 10 | 11 | 11 | 10 | 9 | 7 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |