Last updated: May 3, 2025
Understanding the UV Index in Kashima-shi, Japan is crucial for everyone, as it directly impacts our health and well-being. With elevated UV levels, particularly between 10 AM and 2 PM, being aware of these conditions can significantly reduce the risk of sunburn and long-term skin damage. Kashima-shi, characterized by its humid subtropical climate, experiences higher UV exposure during the summer months, making it essential for residents and visitors alike to monitor UV levels regularly. Stay informed and protect your skin as you enjoy the beautiful outdoors!
As the sun rises, the UV Index begins its ascent, peaking at 11 around 11:00 AM—a signal to take precautions against harmful rays. The morning starts gently, with a maximum of 3 at 7:00 AM, climbing steadily to reach 10 by 10:00 AM. From there, the intensity surges, hitting 11 before gradually tapering off. By 2:00 PM, it drops to 7, and as the afternoon fades into evening, the index continues to decline, reaching a mere 0 by 7:00 PM. Thus, understanding these hourly fluctuations is essential for enjoying a sun-safe day outdoors!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 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 | 0 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, indicating varying levels of sun exposure risk for visitors and residents. From January to February, the UV Index ranges from 3 to 5, categorized as moderate, allowing for a relatively safe burn time of 30 minutes. As spring approaches in March, the index rises to 7 (high), with a burn time decreasing to 25 minutes. The most critical months for sun exposure are April to July, where the UV Index peaks at 11, classified as extreme, resulting in a burn time of only 10 minutes. In August and September, the risk remains high, with indexes at 10 and 9, respectively; however, burn times slightly increase to 15 minutes. As temperatures cool in October through December, the UV Index returns to moderate levels, minimizing the burn time back to 30 minutes by year-end. Visitors and residents are advised to take extra precautions during the high-risk months of April through July, such as wearing protective clothing, using sunscreen, and limiting sun exposure during peak hours to mitigate the risk of sunburn and skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo UVI | 2 | 3 | 6 | 7 | 9 | 9 | 9 | 10 | 8 | 5 | 3 | 2 |
| Kashima-shi | 3 | 5 | 7 | 9 | 11 | 11 | 11 | 10 | 9 | 7 | 5 | 3 |
| Yokohama UVI | 3 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 4 |
| Tokyo UVI | 3 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 4 |
| Nagoya UVI | 4 | 6 | 8 | 10 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 3 |
| Osaka UVI | 4 | 6 | 8 | 11 | 11 | 11 | 12 | 11 | 10 | 7 | 5 | 3 |