UV Index in Toyooka, Japan

Last updated: July 2, 2025

Awareness of the UV Index is essential for residents and visitors in Toyooka, Japan, especially during the sunniest months of the year. Understanding the UV levels is crucial for preventing sunburn and protecting your skin health, as prolonged exposure can lead to serious long-term consequences. With Toyooka's Cfa climate, characterized by humid summers, UV exposure can peak around midday, with indices soaring to 11 during the hottest hours. Staying informed about the UV Index not only helps safeguard your skin but also ensures that your outdoor activities remain enjoyable and safe under the sun.

Hourly UV Index in Toyooka

As the sun rises, the UV Index starts its climb, peaking around midday. At 07:00, it begins at a low 2, indicating relatively low sun exposure. By 08:00, it spikes to 4, leaning towards moderate levels. The sun's intensity reaches its zenith at 11:00 and 12:00, both clocking in at a high 11, signaling a need for protection. The index then gradually decreases, dropping to 9 by 14:00 before falling further to 6 at 15:00. As the day winds down, the risk diminishes significantly, with readings of 3 at 16:00 and retreating to 1 by 19:00. It's a day that reminds us of the sun's power, urging caution during peak hours!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
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	11	extreme	10 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	9	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

Monthly UV Index Trends in Toyooka

Throughout the year, UV exposure varies significantly, peaking during the summer months. High-risk months for UV exposure are from March to August, when the UV Index reaches its maximum levels of 10 to 11 and the burn time is as brief as 10 minutes. Notably, May through August features extreme exposure, requiring diligent sun protection practices. As the year transitions into fall, September to November sees a decrease in UV levels, with October still posing a moderate risk. To ensure safety, visitors and residents are advised to wear protective clothing, use sunscreen, and seek shade during the peak sun hours, especially from late spring through summer when the threat of sunburn is greatest.

Monthly Maximum UV Index for Toyooka, Japan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Toyooka. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Toyooka, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Toyooka UV Index with Other Japan Cities

The table above highlights how UV exposure in Toyooka compares to other major locations across Japan. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Toyooka's solar exposure compared to other cities in Japan. Generated using Copernicus Atmosphere Monitoring Service information.
	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
Toyooka	4	6	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