UV Index in Chizu, Japan

Last updated: June 2, 2025

In Chizu, Japan, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. During the summer months, the region experiences a Cfa climate, characterized by warm temperatures and significant UV exposure. With peak UV levels reaching as high as 11 around noon, it's essential for residents and visitors alike to stay informed about daily UV index fluctuations. By recognizing these levels, you can take proactive steps to protect your skin, ensuring that your outdoor activities remain enjoyable and safe. Whether you're exploring the outskirts or soaking up the sun in the heart of Chizu, awareness of UV risks can make all the difference in your sun safety routine.

Hourly UV Index in Chizu

As the sun rises, the UV Index begins at a mild 2 at 07:00, gradually escalating to a moderate 4 by 08:00. By 09:00, awareness becomes crucial as the index climbs to 6. The sun reaches its peak intensity at 12:00 with a notable 11, indicating high risk for sun exposure. Fortunately, after 1 PM, the index starts to decline, reaching 8 at 14:00, then gradually dropping to 6 by 15:00. The late afternoon brings relief with values of 3 at 16:00 and cooling further to 1 by 18:00 and 19:00. It's essential to take protective measures during the peak hours, particularly between 10 AM and 2 PM, to safeguard your skin from harmful UV rays.

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	10	very high	15 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	1	low	45 min

Monthly UV Index Trends in Chizu

Throughout the year, the UV Index experiences significant fluctuations, with the highest risk months typically from April to August, when values peak at 11-12 and fall into the extreme exposure category. Notably, July and August record the highest UV levels, necessitating diligent sun protection strategies. In contrast, the lower risk period spans from November to February, where the UV Index varies between 3 and 6, indicating moderate to high exposure. Visitors and residents are advised to take extra 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 Chizu, Japan

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

The table above highlights how UV exposure in Chizu 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.

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