UV Index in Kunigami, Japan

Last updated: July 2, 2025

Understanding the UV Index in Kunigami, Japan is crucial for safeguarding your skin and overall health. High UV levels can lead to painful sunburn and increase the risk of long-term skin damage, making it essential to stay informed about daily UV exposure. Kunigami's Cfa climate offers warm temperatures and ample sunshine, which can elevate UV levels throughout the day, especially between 11:00 AM and 1:00 PM when the index peaks at a staggering 13. By always monitoring the UV Index, you can take necessary precautions to protect yourself and enjoy the outdoors safely.

Hourly UV Index in Kunigami

From 07:00 to 19:00, the UV Index exhibits a pronounced peak during midday hours, soaring to 13 between 12:00 and 13:00. The intensity rises steadily from a mild 1 at 07:00 to a substantial 12 at 11:00, indicating peak sun exposure just before noon. As the afternoon progresses, the index gradually declines, dropping to 5 by 16:00 and further to a safe 1 as the sun sets. With a dramatic increase during the late morning and early afternoon, it's crucial to stay protected against UV rays, especially when the index hits 9 and above between 10:00 and 14:00.

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	1	low	45 min
08:00	3	moderate	30 min
09:00	5	moderate	30 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Kunigami

Throughout the year, UV index levels show significant seasonal changes, with the highest risk months occurring from March to September, when the index peaks at 13 and falls under the extreme exposure category, indicating a burn time of merely 10 minutes. February and October also present high to very high UV indexes of 9, necessitating caution with a burn time of 15 minutes. In contrast, January and December are comparatively milder, with UV indexes of 7 and 6 respectively, resulting in a high exposure category and longer burn times of 25 minutes. To ensure safety, residents and visitors should take preventive measures—such as seeking shade, wearing protective clothing, and applying sunscreen—especially during the peak months of April through September when sun exposure can lead to harmful skin damage in a very short time.

Monthly Maximum UV Index for Kunigami, Japan

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

The table above highlights how UV exposure in Kunigami 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.

Kunigami'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
Kunigami	7	9	11	12	13	13	13	13	13	9	9	6