Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Miyazu, Japan, especially given its climate zone (Cfa) which features warm summers and moderate winters. Awareness of UV levels helps in preventing sunburn and protecting skin health, making it essential to monitor daily exposure. During peak hours, particularly between 11:00 AM and 1:00 PM, UV levels can soar up to 11, indicating extreme risk. This means that without proper precautions, sun exposure could lead to serious skin damage. As you enjoy Miyazu's beautiful landscapes, be mindful of the UV Index to ensure a safe and healthy outdoor experience.
As the sun rises, the UV Index begins at a mild 2 at 07:00, gradually escalating to a moderate 4 by 08:00. By 09:00, awareness becomes crucial as the index climbs to 6. The sun reaches its peak intensity at 12:00 with a notable 11, indicating high risk for sun exposure. Fortunately, after 1 PM, the index starts to decline, reaching 8 at 14:00, then gradually dropping to 6 by 15:00. The late afternoon brings relief with values of 3 at 16:00 and cooling further to 1 by 18:00 and 19:00. It's essential to take protective measures during the peak hours, particularly between 10 AM and 2 PM, to safeguard your skin from harmful UV rays.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 9 | very high | 15 min |
11:00 | 10 | very high | 15 min |
12:00 | 11 | extreme | 10 min |
13:00 | 10 | very high | 15 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, UV levels show significant seasonal variation, peaking during the late spring and summer months from May to August, when the UV Index reaches extreme levels of 11, indicating a burn time of just 10 minutes. The high-risk months for sun exposure are May, June, July, and August, when it’s essential for residents and visitors to take precautions such as wearing protective clothing, applying sunscreen, and seeking shade during peak sunlight hours. In contrast, January, February, November, and December present a lower risk with moderate UV Index levels, allowing more time for safe sun exposure (up to 30 minutes). As UV levels begin to drop in the fall months, particularly in October, it's still wise to maintain sun safety practices, especially as the index remains relatively high.
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 |
Miyazu | 4 | 5 | 8 | 10 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 3 |
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 |