UV Index in Yoshinogawa, Japan

Last updated: May 3, 2025

Awareness of the UV Index in Yoshinogawa, Japan is crucial for maintaining skin health and preventing sunburn, especially during the peak UV radiation hours. Understanding the varying UV levels throughout the day helps residents and visitors alike protect their skin from harmful effects. With a Cfa climate that can lead to heightened UV exposure, particularly around midday when indices soar to 11, being informed about these levels is essential to enjoy the sun safely. By taking the necessary precautions, you can bask in Yoshinogawa’s beautiful weather while safeguarding your skin against potential damage.

Hourly UV Index in Yoshinogawa

The UV Index throughout the day showcases a clear rise and fall in sunlight intensity. Starting at a mild 2 at 07:00, the index gains momentum as the sun climbs higher, peaking at an intense 11 by 11:00 and staying strong till 12:00. From there, it gracefully tapers off, descending to 8 at 14:00, and dropping steadily to a gentle 1 by 18:00. Finally, as evening sets in, the UV Index plummets to 0 by 19:00. It's a vivid reminder to stay protected during those peak hours when the sun 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	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	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	0	low	45 min

Monthly UV Index Trends in Yoshinogawa

Throughout the year, UV exposure levels vary significantly, with the highest risks typically occurring in the late spring to summer months. From April through August, the UV Index reaches extreme levels of 11 to 12, indicating that even short exposure (as little as 10 minutes) can result in skin damage. The highest-risk months are April, May, June, July, and August, where it's crucial for both visitors and residents to take protective measures such as wearing sunscreen, hats, and protective clothing. As summer transitions to fall, UV levels begin to decline, with an Index of 10 in September, followed by 7 in October and 6 in November. Visitors and residents should remain vigilant, especially during these peak months, to ensure their safety and well-being under the sun. In the winter months (December and January), the UV Index drops to 4, indicating a moderate risk, allowing for longer burn times of 30 minutes.

Monthly Maximum UV Index for Yoshinogawa, Japan

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

The table above highlights how UV exposure in Yoshinogawa 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.

Yoshinogawa'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
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
Yoshinogawa	4	6	8	11	11	12	12	12	10	7	6	4