UV Index in Ie, Japan

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Ie, Japan, where the subtropical Cfa climate brings varying levels of sun exposure throughout the year. With peak UV levels reaching up to 13 during the midday hours, being aware of these readings is essential for preventing sunburn and maintaining overall skin health. As the sun's intensity fluctuates throughout the day, understanding UV levels can help you enjoy outdoor activities safely while protecting your skin from harmful rays. Stay informed, stay protected, and make the most of Ie's beautiful, sun-drenched days!

Hourly UV Index in Ie

The UV Index peaks dramatically throughout the day, starting from a gentle 1 at 07:00 and gradually rising to an impressive 13 by 12:00. This midday surge marks the day’s highest UV exposure, with levels reaching 11 at 11:00 and 13:00. As the sun begins to descend, the index declines smoothly, tapering back to 8 at 15:00, then 5 at 16:00, and finally settling down to 1 by 18:00 and 19:00. It's essential to stay protected, especially during those peak hours, as the sun’s rays can be quite fierce!

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	8	very high	15 min
11:00	11	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 Ie

The UV Index demonstrates significant seasonal changes, peaking in the summer months. From March to September, the index remains predominantly in the extreme category (11-13), indicating high risk of harm from unprotected sun exposure, with a burn time of only 10 minutes. The months of February and October show a slight reduction in risk but still fall into the very high category (8-9) with burn times of 15 minutes. In contrast, January and December exhibit a drop to the high category (6-7), with burn times increasing to 25 minutes. Residents and visitors are advised to take precautions during high-risk months (February through September), including wearing protective clothing, applying sunscreen, and seeking shade during peak hours, to mitigate the harmful effects of UV radiation.

Monthly Maximum UV Index for Ie, Japan

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

The table above highlights how UV exposure in Ie 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.

Ie'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
Ie	7	9	11	12	13	13	13	13	12	9	8	6