UV Index in Ama, Japan

Last updated: August 1, 2025

Understanding the UV Index in Ama, Japan is crucial for protecting your skin and overall health. With high UV levels peaking between 10 AM to 2 PM, awareness can help you prevent painful sunburns and long-term skin damage. Ama's Cfa climate brings warm, humid summers, increasing your risk of UV exposure throughout the day. By staying informed about daily UV fluctuations, you can enjoy the outdoors while taking necessary precautions to safeguard your skin against harmful rays.

Hourly UV Index in Ama

The UV Index begins its rise at 7:00 AM with a low of 2, gradually climbing to a moderate 3 by 8:00 AM. By 9:00 AM, it reaches 6, but it's at 10:00 AM when the sun truly bears down, peaking at a high of 9. The intensity continues to soar, hitting a maximum of 12 at 12:00 PM, making it the most UV-active hour of the day. From there, it subtly declines, dropping back to 11 at 1:00 PM, and 9 at 2:00 PM. The afternoon brings relief as the index falls to 6 by 3:00 PM and continues to decrease, settling at 4 by 4:00 PM. As the day winds down, the UV Index dips to 2 by 5:00 PM and further to a safe 1 by 6:00 PM and stays consistent through 7:00 PM. Stay sun-smart and avoid peak UV hours for your skin's safety!

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	8	very high	15 min
11:00	10	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	6	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 Ama

Throughout the year, UV Index values show significant seasonal variations that should be considered by both visitors and residents. The high-risk months for UV exposure are from April to August, where the UV Index peaks at 11-12 during June and July—classified as extreme, with a burn time of only 10 minutes. In contrast, January, February, November, and December have moderate exposure levels (UV Index 3-5), allowing a longer burn time of 30 minutes. To safeguard against harmful UV radiation, it is crucial to minimize sun exposure during the high-risk months, particularly between 10 AM and 4 PM, and to employ protective measures such as sunscreen, hats, and sunglasses. By staying informed on UV levels, individuals can enjoy the outdoors safely year-round.

Monthly Maximum UV Index for Ama, Japan

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

The table above highlights how UV exposure in Ama 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.

Ama'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
Ama	3	4	7	10	10	11	12	11	10	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