Last updated: June 2, 2025
In Altenberg, Austria, being aware of the UV Index is essential for protecting your skin and maintaining overall health. Understanding UV levels is crucial for preventing sunburn, reducing the risk of skin damage, and promoting long-term skin health. With Altenberg's temperate oceanic climate (Cfb), residents and visitors face varying UV exposure throughout the day, peaking at a notable 8 between noon and 3 PM. As you enjoy the outdoors, keep an eye on the UV Index to stay safe and sun-smart!
As the sun rises, UV Index levels gradually climb, starting at a mild 1 by 07:00. By 09:00, the index reaches 4, prompting early risers to take note. The real intensity kicks in from 10:00, peaking at 8 between 12:00 and 14:00. This is the time to protect your skin, as the UV exposure is at its highest. Following this zenith, the levels start to taper off, dropping to 6 by 15:00, and declining further as evening approaches. By 17:00, the UV Index lowers to 3, and as the sun sets, it gracefully dims to 1 by 19:00. Remember, while the midday sun may shine brightly, it’s essential to stay vigilant and enjoy the outdoors safely!
| 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 | 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, the UV Index exhibits significant seasonal variations, with the highest levels occurring from May to July, categorized as very high with a burn time of just 15 minutes. April marks the transition into higher UV exposure, registering a UV Index of 6 and a high exposure category. Conversely, the winter months of January, November, and December remain in the low exposure category, with burn times up to 45 minutes. Visitors and residents should be particularly cautious during the high-risk months of May, June, and July, when it is crucial to seek shade, wear protective clothing, and apply sunscreen regularly to minimize the risk of skin damage. As the UV Index decreases in the fall and winter, vigilance can be relaxed, but some level of sun protection remains advisable year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Altenberg | 2 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Vienna UVI | 2 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Linz UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Graz UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 3 | 1 |
| Salzburg UVI | 2 | 3 | 6 | 7 | 8 | 9 | 9 | 8 | 6 | 4 | 3 | 2 |
| Innsbruck UVI | 2 | 4 | 7 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |