Last updated: July 2, 2025
In Illkirch-Graffenstaden, France, staying informed about the UV Index is crucial for both sun safety and overall skin health. Understanding the daily UV levels can help residents and visitors alike prevent sunburn and long-term skin damage, especially during peak hours when the index reaches a maximum of 9 around midday. Situated in a Cfb climate zone, Illkirch-Graffenstaden experiences moderate temperatures with segments of high UV exposure, increasing the need for awareness. By keeping an eye on the UV Index, you can enjoy the sun responsibly, safeguarding your skin while soaking in the beauty of this charming locale.
As the day unfolds, the UV Index rises to its peak, painting a vivid picture of sun intensity. At 7:00 AM, the index starts modestly at 1, making for a gentle morning. By 8:00 AM, we see a slight increase to 2, perfect for a stroll. The sun gains strength, reaching 3 by 9:00 AM and hitting 4 at 10:00 AM. It’s 11:00 AM when things heat up with a 6, leading into the midday sun, where the UV Index surges to a striking 8 at 12:00 PM. The peak occurs at 1:00 PM, with a sizzling 9, holding steady until 2:00 PM. As the afternoon progresses, the index dips gradually, dropping to 8 at 3:00 PM, then further to 6 by 4:00 PM. By 5:00 PM, it eases to 4, followed by a gentle descent to 3 at 6:00 PM. As the sun sets, the index softens to 1 by 7:00 PM, bidding farewell to a day of vibrant sun exposure. Remember to stay protected during those peak hours!
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | 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 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index demonstrates notable seasonal variations that affect exposure risk. January and February have relatively low to moderate UV levels (Index 2-3), with safe burn times of 45 and 30 minutes respectively. As spring approaches, March sees a rise to an index of 5, and by April, it reaches 6, marking the beginning of high-risk months. The most critical period arrives in May and June, where the UV Index peaks at 8-9, indicating very high exposure risk and a reduced burn time of just 15 minutes. July and August maintain this peak, before tapering off in September with a return to a high risk (UV Index 6). October brings a moderate reduction (Index 4), while winter months November and December drop back to low levels. Visitors and residents should be particularly vigilant during May through September, using sunscreen and protective clothing to minimize harmful effects during these high-risk months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Paris UVI | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Illkirch-Graffenstaden | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Lyon UVI | 2 | 3 | 5 | 6 | 8 | 10 | 9 | 8 | 6 | 5 | 3 | 2 |
| Nice UVI | 2 | 4 | 6 | 7 | 8 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Marseille UVI | 2 | 4 | 5 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Toulouse UVI | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |