Last updated: July 2, 2025
In Kajiki, Japan, understanding the UV Index is crucial for safeguarding your skin and health against harmful ultraviolet rays. With a climate classified as Cfa, the region experiences a variety of seasonal weather patterns, but the risk of significant UV exposure remains a constant concern, especially during peak hours. The UV Index in Kajiki can reach alarming levels, peaking at a staggering 13 around noon, emphasizing the importance of monitoring these levels to prevent sunburn and long-term skin damage. Being informed about daily UV levels enables residents and visitors alike to take the necessary precautions for safe sun exposure and to enjoy the beautiful outdoors responsibly.
The UV Index for the day exhibits a striking daytime peak, rising steadily from a gentle 1 at 07:00 to an intense 13 by 12:00. As the sun reaches its zenith, the 11:00 and 12:00 hours warn of heightened exposure, with the index hitting its maximum at 13:00 before beginning its gradual decline. By 15:00, it slips to 7, reminding us that even in the afternoon, protection is vital. As the day winds down, the UV levels fall back to a safe 1 by 18:00, ensuring a return to safer conditions for evening activities. Stay vigilant and protect your skin during those midday hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | 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 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | 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 |
Throughout the year, the UV Index fluctuates significantly, indicating varying levels of sun exposure risk. From January to February, the index increases from 5 (moderate risk) to 6 (high risk), suggesting a gradual need for sun protection. As spring approaches in March and April, the index peaks at 10 (very high risk), requiring increased caution. The summer months of May, June, July, and August reach their highest levels at 12 and 13 (extreme), with only 10 minutes of sun exposure before burning occurs. Although the UV index slightly decreases in September (11) and October (8), it remains high, continuing to warrant protective measures. The year concludes with a return to moderate levels in November (6) and December (5). Visitors and residents are advised to prioritize sun safety during the high-risk months from March through October, utilizing sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours to minimize the risk of sunburn and long-term 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 |
| 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 |
| Kajiki | 5 | 6 | 10 | 10 | 12 | 12 | 12 | 13 | 11 | 8 | 6 | 5 |