Last updated: June 2, 2025
In Sijiazi, China, being aware of the UV Index is essential for maintaining skin health and preventing sunburn. Understanding the daily fluctuations in UV levels can help you make informed decisions about sun protection, especially when the index soars to a maximum of 8 during the midday hours. Nestled in a Dwb climate zone, Sijiazi experiences a mix of dry and wet seasons, which can lead to unexpectedly high UV exposure. Stay vigilant and protect your skin—your future self will thank you!
As the sun rises, the UV Index begins to climb, peaking at 8 between 11:00 and 12:00. Early risers can expect a moderate index of 3 at 07:00, transitioning to a more noticeable 4 by 08:00. The intensity reaches its zenith at 10:00 with a 7, before leveling off at 8 during the midday hours. Post-lunch, the index starts to gracefully decline—shifting from 7 at 13:00 to 5 at 14:00. As afternoon gives way to evening, the index lowers further, dropping to a mere 1 by 17:00 and remaining steady until 19:00. It's essential to plan your sun exposure wisely, especially around midday when protection is most crucial!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences notable seasonal fluctuations. From January to February, the UV levels are low (Index 1-2), allowing for longer exposure times without significant risk of sunburn (up to 45 minutes). As spring approaches in March and April, the index rises to moderate levels (Index 4-5), reducing safe exposure to 30 minutes. The high-risk months of May and June, with UV indices of 7, require more precautions, as skin can burn within just 25 minutes. The peak UV exposure occurs in July and August, reaching a very high level of 8, where the burn time drastically shortens to 15 minutes. By September and October, the risk levels drop again to moderate (Index 4-5), with exposure times recovering to 30 minutes. In the low-risk months of November and December, the index drops back to 1-2, allowing safe sun exposure for up to 45 minutes. Visitors and residents should be particularly attentive during the summer months, ensuring they use sunscreen, wear protective clothing, and seek shade to mitigate the effects of intense UV radiation.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sijiazi | 1 | 2 | 4 | 5 | 7 | 7 | 8 | 8 | 5 | 4 | 2 | 1 |
| Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
| Chengdu UVI | 5 | 6 | 8 | 10 | 12 | 11 | 11 | 10 | 11 | 8 | 6 | 4 |
| Shanghai UVI | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
| Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |