Last updated: September 1, 2025
In Gulou, China, staying informed about the UV Index is crucial for safeguarding your skin and overall health. Understanding the fluctuations in UV levels throughout the day helps residents and visitors alike to prevent sunburn and reduce the long-term risks of skin damage. With a continental climate classified as Dwa, Gulou experiences significant sun exposure, particularly during peak hours when the UV Index can soar to 11. This makes it essential for everyone to take appropriate precautions, particularly between 10 AM and 2 PM, when ultraviolet rays pose the highest risk. By being proactive about UV exposure, you can enjoy the sunny days of Gulou while keeping your skin safe and healthy.
The UV Index readings throughout the day reveal a dramatic rise in sun intensity as the morning unfolds. Starting at 2 at 07:00, the index climbs steadily, peaking at a scorching 11 by noon and remaining high until around 13:00. As the afternoon progresses, the UV Index gently declines, dropping to 5 by 15:00 and further descending to 1 by the evening hours. This pattern highlights the importance of sun protection during midday, as the intense solar radiation can pose health risks. Stay safe and enjoy the sun wisely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 4 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal changes throughout the year, peaking during the summer months. From January (UV Index 2) to February (UV Index 4), exposure remains relatively low, making it a safer time for outdoor activities. However, starting in March (UV Index 6), the levels rise to high, and by April and May (both UV Index 8), it reaches very high, requiring increased sun protection measures. The July peak (UV Index 11) is classified as extreme, indicating a high risk of harm from unprotected sun exposure—burn time drops to just 10 minutes. The trend gradually decreases towards the fall, with September (UV Index 7) and October (UV Index 6) returning to high levels before tapering off again in the winter months. Residents and visitors should be especially cautious during July and August, applying sunscreen regularly, wearing protective clothing, and seeking shade, while during the lower UV months of January, February, and November, general precautions should still be observed.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gulou | 2 | 4 | 6 | 8 | 8 | 9 | 11 | 9 | 7 | 6 | 3 | 2 |
| 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 |