UV Index in Toyokoro, Japan

Last updated: May 3, 2025

In Toyokoro, Japan, being mindful of the UV Index is crucial for maintaining skin health and preventing sunburn. Knowing the UV levels throughout the day can empower residents and visitors to take necessary precautions under the sun, especially given the town's Dfb climate, characterized by warm summers and significant UV exposure. With midday readings peaking at a UV Index of 9, understanding these levels aids in protecting against harmful ultraviolet rays, ensuring a safe and enjoyable outdoor experience in this picturesque locale.

Hourly UV Index in Toyokoro

At dawn, the UV Index begins its ascent, starting at 3 by 7:00 AM. As the sun climbs higher, the index reaches 5 by 8:00 AM and 6 by 9:00 AM, signaling a mid-morning surge in ultraviolet exposure. The peak intensity hits 9 at 11:00 AM, marking the most critical time for sun protection. Afterward, it gradually declines, descending to 4 by 3:00 PM and tapering down to 1 by 5:00 PM. As evening approaches, the UV conditions ease further, reaching 0 by 7:00 PM. This pattern emphasizes the importance of sun safety during the late morning hours when UV radiation is at its strongest.

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	3	moderate	30 min
08:00	5	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	8	very high	15 min
13:00	7	high	25 min
14:00	5	moderate	30 min
15:00	4	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Toyokoro

Throughout the year, the UV Index demonstrates significant seasonal variation, with particularly high-risk months occurring from April to September. During this period, the UV Index frequently reaches levels categorized as very high, peaking at 10 in June and July. This translates to a dangerously short burn time of just 15 minutes, emphasizing the importance of sun protection, including sunscreen, hats, and protective clothing. As the year progresses into October and November, the UV Index decreases to more moderate levels, allowing for greater exposure times of 30 minutes without immediate risk of skin damage. Visitors and residents are advised to remain vigilant during peak UV months, seeking shade and reapplying sunscreen as necessary to safeguard their skin health.

Monthly Maximum UV Index for Toyokoro, Japan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Toyokoro. 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 Toyokoro, 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 Toyokoro UV Index with Other Japan Cities

The table above highlights how UV exposure in Toyokoro 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.

Toyokoro'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
Toyokoro	2	3	5	8	8	10	10	9	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