UV Index in Anan, Japan

Last updated: May 3, 2025

Understanding the UV Index in Anan, Japan is crucial for protecting your skin and overall health, especially given the region's Cfa climate, which brings significant sun exposure throughout the year. With UV levels peaking at 11 during midday, it's essential to be proactive in preventing sunburn and reducing the risk of long-term skin damage. Knowing when to seek shade or apply sunscreen can make a vital difference in enjoying outdoor activities safely. Stay informed about the UV Index to safeguard your skin and make the most of Anan's sunny days!

Hourly UV Index in Anan

The UV Index for the day follows a dynamic trend, peaking during the midday hours. Starting at a modest 2 at 7:00 AM, the intensity gradually intensifies, reaching 4 by 8:00 AM. As the sun climbs higher, the index escalates significantly, hitting a striking 9 at 10:00 AM and reaching its zenith of 11 at 12:00 PM. After this peak, a gradual decline sets in, with the index dropping to 5 by 3:00 PM before tapering off to 1 by 5:00 PM. The day concludes with a UV Index of 0 by 7:00 PM, signaling a clear drop in potential UV exposure. It's a reminder to stay sun-smart, especially during the midday hours when the UV rays are at their strongest!

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	10	very high	15 min
12:00	11	extreme	10 min
13:00	10	very high	15 min
14:00	8	very high	15 min
15:00	5	moderate	30 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Anan

Throughout the year, UV index values show significant seasonal changes, with the highest risk months occurring from April to August, when the UV index reaches extreme levels of 11 to 12. This period, particularly in July, presents the shortest burn time of just 10 minutes, indicating the need for serious sun protection. As spring approaches in March, the index rises to a very high level of 8, making it essential for residents and visitors to start incorporating sun safety measures early. As we transition into the fall and winter months, the UV index drops, with February and October still posing moderate to high risk, while January and December return to a more moderate level. To ensure safety during peak UV times, it's crucial to apply sunscreen liberally, wear protective clothing, and seek shade whenever spending extended periods outdoors.

Monthly Maximum UV Index for Anan, Japan

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

The table above highlights how UV exposure in Anan 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.

Anan'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
Anan	4	6	8	11	11	11	12	11	10	7	6	4