UV Index in Shimada, Japan

Last updated: July 2, 2025

In Shimada, Japan, awareness of the UV Index is crucial for safeguarding skin health and preventing sunburn. With its Cfa climate, Shimada experiences significant UV exposure, especially during the peak hours between 10:00 AM and 2:00 PM, where UV levels can soar to 12—a critical threshold for protection. Understanding these UV levels not only helps mitigate the risks associated with sun exposure but also empowers residents and visitors to enjoy outdoor activities safely. Stay informed and protect your skin, as awareness can make all the difference in this vibrant region!

Hourly UV Index in Shimada

The UV Index throughout the day offers a clear insight into the sun's intensity. Starting at a modest 2 at 7:00 AM, the index steadily rises, reaching 4 by 8:00 AM. Things heat up as we approach 10:00 AM, with the UV Index peaking at an impressive 12, indicating a high risk of harm from unprotected sun exposure. The midday sun is relentless, remaining at 12 until 1:00 PM. After that, a gradual decline begins, dropping to 10 at 1:00 PM and falling to 6 by 3:00 PM. As the sun starts to set, the UV Index drops significantly, dipping to 1 by 5:00 PM and eventually hitting 0 at 7:00 PM. For outdoor enthusiasts, it's crucial to take precautions during the peak hours for a safe and enjoyable day in the sun!

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	7	high	25 min
10:00	10	very high	15 min
11:00	12	extreme	10 min
12:00	12	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	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Shimada

The UV Index experiences significant seasonal variation, with March through September being the high-risk months for sun exposure. March begins the rise with an index of 8 (very high) and only a 15-minute burn time, peaking in July with an index of 12 (extreme) and a mere 10-minute burn time. May through August consistently holds an extreme exposure category, urging increased caution during these months. As summer transitions into fall, the index gradually decreases, with October dropping to 7 (high) and 15-minute burn times for October and September, before returning to moderate levels in winter. Visitors and residents are advised to take precautions during the high-risk months by seeking shade, wearing protective clothing, and applying sunscreen regularly to minimize the risk of skin damage.

Monthly Maximum UV Index for Shimada, Japan

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

The table above highlights how UV exposure in Shimada 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.

Shimada'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
Shimada	4	5	8	10	11	11	12	11	10	7	5	4
Osaka UVI	4	6	8	11	11	11	12	11	10	7	5	3