UV Index in Maniwa, Japan

Last updated: June 2, 2025

Understanding the UV Index in Maniwa, Japan is essential for safeguarding your skin and maintaining overall health. With the region's Cfa climate, characterized by warm summers and varying cloud cover, UV levels can soar, particularly around midday when they peak at a high of 11. Being aware of these UV levels is crucial for sunburn prevention and protecting your skin from long-term damage. As the day progresses, you’ll encounter significant variations—from a moderate 4 in the morning to an extreme 10 during noon hours. Stay informed and take the necessary precautions to enjoy the outdoors safely while minimizing your exposure risk!

Hourly UV Index in Maniwa

The UV Index paints a vivid picture of the sun’s strength throughout the day. Starting at a modest 2 at 07:00, the index gradually climbs as the sun ascends, reaching 4 by 08:00. By 09:00, it spikes to 6, and before long, it peaks at an impressive 11 at 12:00, marking the most intense exposure. The afternoon starts to cool slightly, with the index dropping to 10 by 13:00 and then tapering off through 8 at 14:00, 6 at 15:00, and back to 4 at 16:00. As the sun begins its descent, the UV Index falls to 2 by 17:00, lingering at 1 through the evening hours, creating a gentle reminder to enjoy the sun but also to stay mindful of its intensity during peak hours.

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	8	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	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 Maniwa

Throughout the year, UV radiation levels vary significantly, with the highest exposure typically occurring from May to August. During this period, the UV Index reaches extreme levels (11-12), resulting in a rapid burn time of only 10 minutes. Visitors and residents should take extra precautions, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours. March and April also present high-risk months with a UV Index of 8-10, where burn times decrease to 15 minutes. As the year progresses, the UV Index declines, with November and December offering moderate levels with burn times of 30 minutes. To ensure safety, it is essential to remain vigilant about UV exposure, especially during the summer months.

Monthly Maximum UV Index for Maniwa, Japan

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

The table above highlights how UV exposure in Maniwa 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.

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