Last updated: June 2, 2025
In Mitsukaido, Japan, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. As the sun peaks with a maximum UV Index of 11 around midday, awareness of these levels can help residents and visitors alike safeguard their skin from harmful ultraviolet radiation. Located in a Cfa climate zone, Mitsukaido typically experiences moderate summers, which can lead to elevated UV exposure, especially during the peak hours between 10:00 AM and 2:00 PM. By staying informed about UV levels, you can take proactive measures to protect yourself, ensuring a safe and enjoyable outdoor experience.
The UV Index for the day presents a notable peak at 11:00 AM, where it reaches a striking 11, indicating very high levels of UV radiation. As the sun climbs, the index rises steadily from a moderate 2 at 7:00 AM to a challenging 9 by 10:00 AM. Though it slightly dips to 10 at 12:00 PM, the intensity begins to decline after 1:00 PM, stabilizing around 5 by 3:00 PM, before tapering down to a safe 1 by 5:00 PM. Exposure during the midday hours is critical—taking precautions is essential as the sunlight peaks in intensity!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | 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 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 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 seasonal changes, with January and December presenting the lowest levels (UV Index 3) and the summer months of June and July reaching peak levels (UV Index 11), categorized as extreme. April and May also have very high readings (UV Index 9-10), indicating a gradual increase in risk as spring progresses into summer. March, August, and September maintain a high risk for UV exposure (UV Index 7-9). Visitors and residents are advised to take precautions from March through October, especially during the extreme months of June and July, by seeking shade, wearing protective clothing, and applying sunscreen regularly, as burn times decrease significantly to as little as 10 minutes during peak UV periods.
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 |
| Mitsukaido | 3 | 5 | 7 | 9 | 10 | 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 |