UV Index in Tajimi, Japan

Last updated: May 3, 2025

Understanding the UV Index in Tajimi, Japan is crucial for maintaining skin health and preventing sunburn, especially during the peak hours when UV levels soar. With a humid subtropical climate (Cfa), Tajimi experiences significant UV exposure throughout the year, making awareness essential for residents and visitors alike. On sunny days, the UV Index can reach dangerous levels, peaking at 11 between midday hours, which necessitates protective measures. By keeping an eye on the UV Index, you can enjoy the outdoors while safeguarding your skin from potential harm.

Hourly UV Index in Tajimi

The UV Index throughout the day presents a dynamic picture of sun exposure. As early as 7:00 AM, the index starts at a mild 2, ramping up to a moderate 4 by 8:00 AM. The sun's intensity peaks around 11:00 AM and 12:00 PM with a striking 11, marking the height of caution for outdoor activities. As we move into the afternoon, the index gradually declines, dropping to 8 by 2:00 PM and further to 5 by 3:00 PM. The evening brings relief, with the UV Index decreasing to a 1 by 5:00 PM and finally hitting 0 by 7:00 PM. It’s clear that the midday hours pose the greatest risk, so sun safety measures are essential during those peak times.

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	7	high	25 min
10:00	9	very high	15 min
11:00	11	extreme	10 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 Tajimi

Throughout the year, the UV Index experiences significant seasonal changes, indicating varying levels of sun exposure risk. The high-risk months are from March to August, where the index reaches very high to extreme levels, peaking at 12 in July. During this time, burn times are dangerously short, ranging from 10 to 15 minutes. As such, visitors and residents are advised to take precautionary measures, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sunlight hours. In contrast, the winter months (December through February) see lower UV levels, with a moderate risk indicated by indices from 3 to 6, allowing for safer outdoor activities, though caution is still recommended.

Monthly Maximum UV Index for Tajimi, Japan

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

The table above highlights how UV exposure in Tajimi 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.

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