Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Nantai, China, where the sun's powerful rays can pose significant risks to skin health. Knowledge of UV levels empowers you to take proactive measures against sunburn, reducing your risk of long-term skin damage. In Nantai’s Cfa climate, you can expect a range of exposures throughout the day, with peak UV Index levels soaring to 12 around noon! Awareness of these fluctuations is key to enjoying the outdoors while protecting yourself from harmful UV radiation. Stay informed, stay protected, and enjoy the beauty of Nantai safely!
The UV Index throughout the day showcases a dynamic shift in sun intensity, peaking at 12 around noon. Beginning with a gentle 2 at 7:00 AM, the index steadily increases, hitting 11 by 11:00 AM as the sun climbs higher. By 12:00 PM, the sun reaches its zenith at 12, marking the highest UV exposure, making sun safety a priority. As the afternoon progresses, from 1:00 PM to 3:00 PM, the UV Index gradually decreases to 9 by 2:00 PM and 7 by 3:00 PM. The day winds down with a notable drop in intensity, returning to a mild 1 by 6:00 PM, emphasizing that the safest time to enjoy the sun is before noon or after 4:00 PM.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits a notable seasonal variation throughout the year, peaking in the summer months. From January through February, the UV Index ranges from 6 to 7, indicating a high risk of harm from unprotected sun exposure, with a burn time of 25 minutes. The risk escalates sharply in March and April to an index of 10, classified as very high, with a reduced burn time of just 15 minutes. The months of May to August present the highest risks, with an extreme UV Index of 11 to 12 and a burn time of only 10 minutes, marking this period as the most critical for sun protection. The risk diminishes slightly in September (UV Index 10) and October (UV Index 9), where the burn time increases to 15 minutes but still remains significant. By November, the UV Index drops to 7 and returns to a high risk, while December sees a further decrease to 5, categorized as moderate with a burn time of 30 minutes. Visitors and residents are strongly advised to take protective measures during high-risk months, especially from March to August, including wearing sunscreen, protective clothing, and seeking shade to minimize sun exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Nantai | 6 | 7 | 10 | 10 | 11 | 12 | 12 | 12 | 10 | 9 | 7 | 5 |
| 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 |