UV Index in Nomi, Japan

Last updated: July 2, 2025

Understanding the UV Index in Nomi, Japan is crucial for maintaining your skin health and preventing sunburn. With a humid subtropical climate (Cfa), Nomi experiences significant UV exposure, particularly during the peak hours of 11:00 AM to 1:00 PM, when levels soar to a maximum of 11. Awareness of these UV levels not only helps you enjoy the outdoors safely but also protects you from the long-term effects of sun damage. Whether you're out for a stroll or engaging in outdoor activities, knowing when and how to protect your skin can make all the difference in your summer experience. Stay informed, stay safe!

Hourly UV Index in Nomi

As the sun rises, the UV Index begins its ascent, starting at a gentle 2 at 07:00. By 08:00, it climbs to 4, indicating that protective measures are beginning to be advisable. The intensity peaks at 11 during the 11:00 and 12:00 hours, marking the time when sunlight is most potent. As the afternoon progresses, the index starts to decline; by 14:00, it drops to 8, and further diminishes to 6 by 15:00. As evening approaches, the UV Index wanes significantly, reducing to 3 at 16:00 and sinking to a mild 1 by 18:00, indicating a much lower risk. Overall, it’s a sun-soaked day, urging outdoor enthusiasts to be mindful of sun exposure, especially 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	4	moderate	30 min
09:00	6	high	25 min
10:00	9	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	1	low	45 min

Monthly UV Index Trends in Nomi

The UV Index experiences significant seasonal fluctuations, peaking from March to August. During this period, particularly in June, July, and August, the UV Index reaches an extreme level of 11, indicating a burn time of only 10 minutes. March and April also present high risks with UV indexes of 8 and 10 respectively, categorized as very high. Conversely, January, February, November, and December see moderate levels, with burn times of around 30 minutes. Visitors and residents are advised to take precautions, especially during the high-risk months of March through September, such as wearing protective clothing, using sunscreen, and seeking shade to minimize UV exposure and potential sunburn.

Monthly Maximum UV Index for Nomi, Japan

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

The table above highlights how UV exposure in Nomi 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.

Nomi'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
Nomi	4	5	8	10	10	11	11	11	9	7	5	3
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