UV Index in Takamatsu, Japan

Last updated: May 3, 2025

Understanding the UV Index in Takamatsu, Japan is crucial for protecting your skin and overall health. With rising UV levels, particularly peaking at 11 between 12:00 PM and 1:00 PM, being aware of the sun's intensity is vital for preventing sunburn and reducing long-term skin damage. Takamatsu's Cfa climate features a blend of humid summers, resulting in periods of elevated UV exposure. By staying informed on UV levels, you can enjoy the beautiful outdoor scenery while safeguarding yourself against potential risks.

Hourly UV Index in Takamatsu

The day's UV Index paints a vivid picture of sunshine intensity as it climbs towards its peak around midday. Starting with a gentle 2 at 7:00 AM, the index rises steadily, hitting 3 by 8:00 AM and then surging to 6 by 9:00. As the sun reaches its zenith, the UV Index spikes dramatically, peaking at an impressive 11 at noon. This is the moment to take precautions, as the index dips gradually in the afternoon, falling to 6 by 3:00 PM and easing further to 0 after sunset at 7:00 PM. Enjoy the sun, but remember—protection is key when the sun shows its strongest face!

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	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	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 Takamatsu

The UV Index demonstrates significant seasonal variations, highlighting the increasing risk of UV exposure as summer approaches. High-risk months, marked by an extreme category (UV Index 11 and above), include April through August, when the recommended burn time is a mere 10 minutes due to the intense UV radiation. March and September transition into very high levels, requiring caution with 15 minutes of safe exposure. In contrast, winter months like January, February, November, and December feature moderate UV levels (UV Index 4-5), allowing for longer burn times of 30-25 minutes without risk. Visitors and residents are advised to take extra precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade to mitigate the dangers of overexposure.

Monthly Maximum UV Index for Takamatsu, Japan

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

The table above highlights how UV exposure in Takamatsu 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.

Takamatsu'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
Takamatsu	4	5	8	11	11	11	12	12	10	7	5	4