UV Index in Ozu, Japan

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of Ozu, Japan, where the climate presents unique sun exposure challenges. With a maximum UV Index soaring to 11 during peak hours, awareness of UV levels becomes essential in preventing sunburn and safeguarding skin health. This knowledge is particularly vital given Ozu's Cfa climate, which can lead to increased UV radiation risks throughout the day. By staying informed, you can enjoy the beautiful outdoor scenery of Ozu while effectively protecting your skin and overall well-being.

Hourly UV Index in Ozu

As the sun rises, the UV Index starts at a manageable 2 at 7:00 AM, making for a gentle beginning. By 8:00 AM, it climbs to 4, signaling the need for some sun protection. The real intensity hits at 10:00 AM, peaking at an eye-catching 11 by noon, where precautions become essential. The afternoon sees the index holding steady at 11 until 1:00 PM, before gradually dropping to 9 at 2:00 PM and then tapering off. By late afternoon, the UV Index returns to a safe 2 by 5:00 PM, and settles down to a low 1 by 6:00 PM, making the evening hours perfect for outdoor activities without the worry of excessive sun exposure. Be mindful of the midday sun when planning outdoor adventures!

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	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 Ozu

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 Ozu, Japan

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

The table above highlights how UV exposure in Ozu 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.

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