UV Index in Iga, Japan

Last updated: May 3, 2025

Understanding the UV Index in Iga, Japan is crucial for safeguarding your skin and overall health. With UV levels reaching a maximum of 11 at noon, awareness is key to preventing sunburn and long-term skin damage. As a city characterized by a Cfa climate, Iga experiences significant UV radiation, particularly during peak hours. Being informed about UV exposure helps residents and visitors alike enjoy the sun responsibly, ensuring that outdoor activities are both safe and enjoyable.

Hourly UV Index in Iga

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 Iga

Throughout the year, UV exposure fluctuates significantly, with high-risk months occurring from March to September. The UV Index peaks in July at 12, categorized as extreme, with only 10 minutes until burn time. Both April and May also present critical UV levels of 11. Residents and visitors should exercise caution during these months, wearing protective clothing, using sunscreen of SPF 30 or higher, and seeking shade during peak sunlight hours. In contrast, January, November, and December offer a more moderate UV Index of 4 to 5, with burn times of 30 minutes or more, making sun protection less critical during this period. Continuous awareness of seasonal UV changes is essential for health and safety.

Monthly Maximum UV Index for Iga, Japan

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

The table above highlights how UV exposure in Iga 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.

Iga'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
Iga	4	6	8	11	11	11	12	11	10	7	5	4
Osaka UVI	4	6	8	11	11	11	12	11	10	7	5	3