UV Index in Onoda, Japan

Last updated: July 2, 2025

In Onoda, Japan, understanding the UV Index is crucial for protecting your skin and overall health. With high UV levels peaking at 12 around midday, the risk of sunburn increases significantly, making awareness vital for effective sun protection. The Cfa climate, characterized by warm summers, brings with it elevated UV exposure, especially during the peak hours of 10 AM to 2 PM. By staying informed about UV levels, residents and visitors alike can take the necessary precautions to enjoy the sunny days while safeguarding their skin health.

Hourly UV Index in Onoda

The UV Index for the day reveals a dynamic shift in sun exposure, peaking dramatically between 11:00 AM and 1:00 PM. Starting the morning with a mild maximum of 2 at 7:00 AM, the index steadily rises, reaching 12 by midday—an indication of high risk for harm from unprotected sun exposure. As the afternoon progresses, it dips to 10 at 2:00 PM and then gradually decreases to a more moderate level of 4 by 4:00 PM. By the evening, the UV Index settles back down to 1 by 6:00 PM, signaling a safe time to enjoy the outdoors again. Be sure to protect your skin during those peak hours!

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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	4	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 Onoda

Throughout the year, the UV Index experiences significant seasonal variation, peaking during the summer months. High-risk months for UV exposure are from March to August, where the index reaches extreme levels of 11 to 12, with burn times as short as 10 minutes. In contrast, the UV index is lower and safer from November to February, with moderate exposure and burn times of 30 minutes in January and February. To protect yourself, it is crucial to apply sunscreen, wear protective clothing, and seek shade during peak UV hours, particularly in high-risk months. Stay vigilant and prioritize skin safety, especially from March through August when the chances of sunburn and long-term skin damage are significantly heightened.

Monthly Maximum UV Index for Onoda, Japan

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

The table above highlights how UV exposure in Onoda 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.

Onoda'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
Onoda	4	5	8	10	11	11	12	12	10	7	6	3