Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Nishinomiya-hama, Japan, where the warm Cfa climate invites outdoor activities year-round. As UV levels can peak dramatically, especially between 10 AM and 2 PM, being aware of daily UV readings helps prevent sunburn and protects long-term skin health. With indices soaring to 11 during peak hours, it’s essential to stay informed about UV exposure risks to enjoy the sun safely while avoiding skin-related issues.
The UV Index data paints a clear picture of a sun-soaked day, starting with a gentle maximum of 2 at 7:00 AM. As the sun rises higher, the intensity builds, peaking at an impressive 11 around 11:00 AM to 1:00 PM. This period of extreme UV exposure underscores the importance of sun safety, urging everyone to seek shade or apply sunscreen. As afternoon sets in, the index gradually declines, dropping to 8 at 2:00 PM, followed by a gentle slide to 6 at 3:00 PM, before winding down to a calmer 1 by 6:00 PM. Overall, it’s a day to enjoy the sunshine while being mindful of its powerful rays!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | 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 exhibits significant seasonal changes, indicating varying levels of sun exposure risk. The high-risk months for UV radiation are typically from March to August, where the UV Index reaches an extreme level of 11, suggesting a burn time as short as 10 minutes. Notably, April through August presents the highest risk, when protective measures are particularly crucial. As such, it is advisable for both visitors and residents to take precautions, such as wearing sunscreen, protective clothing, and seeking shade during peak hours, especially in these summer months. Conversely, during the cooler months of January, December, and November, the UV Index drops to moderate levels, allowing for more relaxed sun exposure. Overall, staying informed about the UV Index is essential for enjoying the outdoors safely year-round.
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 |
| Nishinomiya-hama | 4 | 6 | 8 | 11 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 3 |
| Osaka UVI | 4 | 6 | 8 | 11 | 11 | 11 | 12 | 11 | 10 | 7 | 5 | 3 |