UV Index in Komagane, Japan

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of Komagane, Japan, where the climate can significantly influence your sun exposure risk. With UV levels peaking at a high of 11 during midday, awareness of these values is essential for preventing sunburn and protecting your skin health. The Dfb climate of Komagane, characterized by warm summers, brings ample sunlight, making it vital to stay informed about UV fluctuations throughout the day. By keeping an eye on the UV Index, you can enjoy the outdoor beauty of Komagane while safeguarding your skin from potential harm.

Hourly UV Index in Komagane

As the sun rises, the UV Index begins at a gentle 2 at 7:00 AM, making early hours perfect for outdoor plans. However, by 8:00 AM, it ramps up to 5, signaling a need for some sun protection. The intensity peaks at 11:00 AM with a UV Index of 11, indicating extreme levels, and remains intense until 1:00 PM. From there, it gradually begins to taper down, dropping to 8 by 2:00 PM and further declining to 3 by 4:00 PM. As the day winds down, the UV Index drops to 0 by 7:00 PM, providing a cool relief from the midday sun. Stay safe and enjoy the sun wisely!

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	5	moderate	30 min
09:00	8	very high	15 min
10:00	10	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 Komagane

As the seasons change, so do the UV Index levels, significantly influencing sun exposure risk throughout the year. High-risk months are from March to August, when the UV Index peaks at 11 to 12, indicating extreme exposure with a burn time as short as 10 minutes. Particularly critical are May and July, when the UV Index consistently reaches its maximum. Conversely, the winter months of January and December present a moderate risk with an Index of 4, allowing for a safer exposure time of 30 minutes. To ensure safety, visitors and residents are advised to take precautions during high UV Index months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours when UV exposure is greatest.

Monthly Maximum UV Index for Komagane, Japan

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

The table above highlights how UV exposure in Komagane 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.

Komagane'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
Komagane	4	6	9	10	11	11	12	12	10	7	6	4