UV Index in Urakawa, Japan

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Urakawa, Japan, where sunlight intensity can significantly affect skin health. Being aware of UV levels helps prevent sunburn and reduces the risk of long-term skin damage. With a Dfb climate, Urakawa experiences varying UV exposure throughout the day, peaking at 10 between 11:00 AM and 12:00 PM. During these hours, it's particularly important to take precautions to protect yourself from harmful solar radiation, ensuring your outdoor activities are both enjoyable and safe.

Hourly UV Index in Urakawa

The hourly UV Index paints a clear picture of the day's intensity from morning to evening. Starting at a mild 3 at 7:00 AM, the day warms up quickly, peaking at a robust 10 between 11:00 AM and 12:00 PM—the perfect time to seek shelter or apply sunscreen. After that fleeting high, the UV Index gradually declines, dropping to 4 by 3:00 PM and further diminishing to 1 by 5:00 PM. As the sun sets, the UV levels plummet to a safe 0 by 7:00 PM. This data underscores the importance of protecting your skin during peak hours, especially 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	3	moderate	30 min
08:00	5	moderate	30 min
09:00	7	high	25 min
10:00	9	very high	15 min
11:00	10	very high	15 min
12:00	10	very high	15 min
13:00	9	very high	15 min
14:00	7	high	25 min
15:00	4	moderate	30 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 Urakawa

Throughout the year, the UV Index experiences significant seasonal variations, with the highest risk months typically spanning from March to September. During this period, particularly in April, May, June, July, and August, the UV Index reaches a peak of 10, indicating a very high exposure category and a burn time of just 15 minutes. Conversely, the months of January and December signify the lowest UV levels, with an index of 2 and a burn time of 45 minutes. Visitors and residents should take caution during the high-risk months, employing protective measures such as sunscreen, hats, and sunglasses when spending time outdoors, as even short exposure can lead to skin damage. Being vigilant about UV levels can help ensure safety while enjoying the sun.

Monthly Maximum UV Index for Urakawa, Japan

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

The table above highlights how UV exposure in Urakawa 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.

Urakawa'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
Urakawa	2	3	6	8	9	10	10	10	8	6	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