UV Index in Saijo, Japan

Last updated: May 3, 2025

Understanding the UV Index in Saijo, Japan is crucial for protecting your skin and overall health. With its Cfa climate, Saijo experiences variable yet often intense sun exposure, particularly during the summer months when UV levels can peak at a high 11 from 11 AM to 1 PM. By being aware of the UV Index, residents and visitors can take proactive measures to prevent sunburn and long-term skin damage. Knowing when the sun is strongest helps ensure you enjoy Saijo's beautiful outdoors while safeguarding your skin’s health against harmful UV radiation.

Hourly UV Index in Saijo

As the sun rises, the UV Index gradually climbs, starting at a modest 2 by 07:00 and reaching its peak of 11 between 11:00 and 13:00. This is the time when sun protection is most crucial, as the intensity of UV radiation can lead to skin damage in just a short period. After the midday zenith, the index begins to decline, dropping to 8 by 14:00, and easing further to 3 by 16:00. As daylight wanes, the UV Index decreases significantly, plummeting to 0 by 19:00. It's important to remain vigilant during the peak hours to safeguard your skin while enjoying the outdoors!

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	11	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Saijo

Throughout the year, UV radiation levels dramatically fluctuate, impacting the risk of skin damage for both visitors and residents. The highest risk months occur from May to August, where the UV Index peaks at 11 to 12, indicating an extreme exposure category with a burn time of just 10 minutes. During these months, it is crucial to limit direct sun exposure and utilize protective measures such as sunscreen, hats, and clothing to safeguard skin health. March and April also present high levels of concern, categorized as very high with burn times of just 15 minutes. As seasons shift into fall and winter, the UV Index decreases, with December and January showing a moderate level, allowing for longer safe exposure times of 30 minutes. However, even during lower UV months, protective precautions are still advised. Stay informed and protect yourself year-round!

Monthly Maximum UV Index for Saijo, Japan

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

The table above highlights how UV exposure in Saijo 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.

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