UV Index in Ibusuki, Japan

Last updated: July 2, 2025

Understanding the UV Index in Ibusuki, Japan is crucial for everyone looking to enjoy the outdoors safely. With the city’s Cfa climate, residents and visitors experience both beautiful sunshine and significant UV exposure, particularly during peak hours. By comprehending the varying UV levels throughout the day, you can effectively prevent sunburn and safeguard your skin health. For instance, the UV Index soars to a striking 13 around midday, representing a very high risk of harm from unprotected sun exposure. Being aware of these levels allows you to plan your activities wisely and protect yourself under the Japanese sun.

Hourly UV Index in Ibusuki

The UV Index for the day exhibits a striking daytime peak, rising steadily from a gentle 1 at 07:00 to an intense 13 by 12:00. As the sun reaches its zenith, the 11:00 and 12:00 hours warn of heightened exposure, with the index hitting its maximum at 13:00 before beginning its gradual decline. By 15:00, it slips to 7, reminding us that even in the afternoon, protection is vital. As the day winds down, the UV levels fall back to a safe 1 by 18:00, ensuring a return to safer conditions for evening activities. Stay vigilant and protect your skin during those midday 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	1	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	13	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 Ibusuki

Throughout the year, the UV Index experiences notable fluctuations, influencing the risk of UV exposure for both visitors and residents. January sees a moderate UV Index of 5, increasing through February with a high index of 7. The real concern peaks from March to September, where the UV Index reaches extreme levels, topping at 13 in August. This period marks high-risk months for sunburn, with burn times decreasing to just 10 minutes in the summer months. As the year progresses, the UV Index gradually declines, with October and November still presenting high risks, though slightly reduced at 8 and 7, respectively. To protect oneself, it is crucial to wear sunscreen, seek shade, and wear protective clothing during peak UV periods, particularly in the summer months from March through September.

Monthly Maximum UV Index for Ibusuki, Japan

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

The table above highlights how UV exposure in Ibusuki 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.

Ibusuki'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
Ibusuki	5	7	10	11	12	12	12	13	11	8	7	5