Last updated: July 2, 2025
In Tomakomai, Japan, staying informed about the UV Index is essential for safeguarding your skin health and preventing sunburn. As the sun’s intensity can vary significantly throughout the day, understanding UV levels can help you plan outdoor activities responsibly. With a humid continental climate characterized by warm summers, Tomakomai residents face unique UV exposure risks, especially during peak hours when UV Index values soar to 9. By being aware of these levels, you can enjoy the beautiful outdoors while ensuring your well-being.
The UV Index today shows a dynamic journey through the hours, peaking impressively at 9 between 11:00 AM and 12:00 PM, signaling a high level of sun exposure. Starting the day at 3 at 07:00 AM, it steadily climbs to 6 by 09:00 AM and reaches its zenith at 10:00 AM with an 8. As the sun moves across the sky, it maintains a strong presence, remaining at 9 during the late morning before gradually descending to 4 by 03:00 PM. The decline continues into the late afternoon, dropping to 1 by 17:00 PM until sunset. It's essential to take precautions during the peak hours to protect your skin from harmful UV radiation!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index shows significant seasonal variations that can impact residents and visitors. From January to February, the UV Index rises from 2 (low) to 3 (moderate), allowing for relatively safe sun exposure, with burn times increasing slightly from 45 to 30 minutes. As we move into March and April, the UV Index climbs to 5 (moderate) and 7 (high), respectively, necessitating increased sun protection as burn times decrease to 25 minutes. The peak high-risk months occur from May to September, with UV Index levels reaching 8 to 10 (very high) and burn times dropping to just 15 minutes. To stay safe during these months, it is crucial to apply sunscreen, wear protective clothing, and limit sun exposure, especially between 10 AM and 4 PM. Moving into October and November, the UV Index moderates again to 5 and 3, allowing for safer outdoor activities with burn times of 30 minutes before returning to low levels in December. Therefore, it is essential for all to remain vigilant about sun safety, particularly during the summer months when UV radiation is at its highest.
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 |
| Tomakomai | 2 | 3 | 5 | 7 | 8 | 10 | 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 |