UV Index in Miyoshi, Japan

Last updated: July 2, 2025

In Miyoshi, Japan, being aware of the UV Index is essential for maintaining skin health and preventing sunburn. With typical daytime temperatures and ample sunlight characteristic of its Cfa climate, residents and visitors alike face varying levels of UV exposure throughout the day. Understanding the UV levels—which can peak at a staggering 12 around noon—helps individuals take proactive measures to protect themselves from harmful rays, ensuring a safer and more enjoyable experience outdoors. Stay informed and safeguard your skin as you soak up the beautiful Miyoshi sun!

Hourly UV Index in Miyoshi

The UV Index throughout the day showcases a dynamic shift in sun intensity, peaking at 12 around noon. Beginning with a gentle 2 at 7:00 AM, the index steadily increases, hitting 11 by 11:00 AM as the sun climbs higher. By 12:00 PM, the sun reaches its zenith at 12, marking the highest UV exposure, making sun safety a priority. As the afternoon progresses, from 1:00 PM to 3:00 PM, the UV Index gradually decreases to 9 by 2:00 PM and 7 by 3:00 PM. The day winds down with a notable drop in intensity, returning to a mild 1 by 6:00 PM, emphasizing that the safest time to enjoy the sun is before noon or after 4:00 PM.

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	11	extreme	10 min
14:00	9	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 Miyoshi

Throughout the year, UV exposure levels fluctuate significantly, with the highest risk months occurring from March through August, when the UV Index peaks at 11-12 and reaches an extreme exposure category, resulting in a burn time as short as 10 minutes. In contrast, the lowest risk months are January, December, and November, which present a moderate UV Index of 4-5 and allow for longer exposure times without risk of burning (30 minutes). Visitors and residents should remain vigilant during the high-risk months, employing protective measures such as sunscreen, protective clothing, and limiting direct sun exposure, especially during peak hours. It is crucial to stay aware of the changing UV Index to ensure safe enjoyment of outdoor activities year-round.

Monthly Maximum UV Index for Miyoshi, Japan

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

The table above highlights how UV exposure in Miyoshi 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.

Miyoshi'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
Miyoshi	4	6	8	11	11	11	12	12	10	7	5	4