UV Index in Sakura, Japan

Last updated: June 2, 2025

In Sakura, Japan, being aware of the UV Index can be a game changer for your skin health. Understanding UV levels is crucial for sunburn prevention and protecting yourself from long-term skin damage, especially as you'll often find yourself enjoying the beautiful cherry blossoms under the sun. With a Cfa climate that brings warm summers, Sakura experiences significant UV exposure, peaking with values as high as 11 around noon. By staying informed about the UV Index, you can better plan your outdoor activities and safeguard your skin against harmful rays.

Hourly UV Index in Sakura

The UV Index begins its climb at 07:00 with a moderate 3, signaling a gentle start to the day. By 08:00, it escalates to 5, and as the sun reaches its zenith, the intensity peaks at an impressive 11 by 11:00 and remains constant until 12:00. This critical time urges sun enthusiasts to protect their skin, as exposure becomes significant. The afternoon brings a gradual decline, with values dropping to 9 at 13:00 and tapering off to 5 by 15:00. As the day wanes, the Index slips further, landing at 1 by 17:00, signaling a safer time to enjoy outdoor activities. As twilight approaches, the UV threat diminishes, ultimately reaching a 0 by 19:00. Enjoy the sun wisely!

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	3	moderate	30 min
08:00	5	moderate	30 min
09:00	7	high	25 min
10:00	10	very high	15 min
11:00	11	extreme	10 min
12:00	11	extreme	10 min
13:00	9	very high	15 min
14:00	7	high	25 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 Sakura

Throughout the year, UV Index levels display significant seasonal changes, with the highest readings occurring from May to August, where the index reaches an extreme level of 11. This period signifies a high-risk for UV exposure, with a dangerously quick burn time of only 10 minutes. In contrast, the winter months of January, February, November, and December feature moderate UV levels, with indices ranging from 3 to 5 and a burn time of 30 minutes or more. Visitors and residents should take precautions during the peak months, particularly by seeking shade, wearing protective clothing, and applying sunscreen, as skin damage can occur rapidly during this time. It's crucial to remain vigilant during the spring and early fall as well, when UV levels are still notably high, especially in March and September.

Monthly Maximum UV Index for Sakura, Japan

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

The table above highlights how UV exposure in Sakura 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.

Sakura'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
Sakura	3	5	8	9	11	11	11	11	9	7	5	4
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