UV Index in Tsukawaki, Japan

Last updated: July 2, 2025

In Tsukawaki, Japan, understanding the UV Index is crucial for maintaining healthy skin and preventing sunburn. With a typical Cfa climate that features warm summers and moderate UV exposure, locals and visitors alike should be aware of the sun's intensity throughout the day. The UV Index here can soar to 12 around noon, indicating extreme exposure risks that can lead to skin damage. By staying informed about daily UV levels, you can take proactive measures to protect yourself from harmful rays and enjoy the beautiful outdoor environment safely.

Hourly UV Index in Tsukawaki

The UV Index for the day reveals a dynamic shift in sun exposure, peaking dramatically between 11:00 AM and 1:00 PM. Starting the morning with a mild maximum of 2 at 7:00 AM, the index steadily rises, reaching 12 by midday—an indication of high risk for harm from unprotected sun exposure. As the afternoon progresses, it dips to 10 at 2:00 PM and then gradually decreases to a more moderate level of 4 by 4:00 PM. By the evening, the UV Index settles back down to 1 by 6:00 PM, signaling a safe time to enjoy the outdoors again. Be sure to protect your skin during those 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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	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 Tsukawaki

Throughout the year, the UV Index experiences significant fluctuations, with the most dangerous months being April through September, where the index consistently reaches extreme levels of 11 to 12. March marks the transition to very high exposure, with a UV Index of 9, while February shows an increase to 6, categorized as high. During the peak summer months from May to August, burn times drop dramatically to just 10 minutes, underscoring the urgency for protective measures. Conversely, the UV Index decreases to moderate levels of 4 in January and December, allowing for longer safe exposure times of up to 30 minutes. To ensure safety, visitors and residents should prioritize sun protection strategies—such as sunscreen, protective clothing, and seeking shade—especially during high-risk months of April through September.

Monthly Maximum UV Index for Tsukawaki, Japan

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

The table above highlights how UV exposure in Tsukawaki 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.

Tsukawaki'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
Tsukawaki	4	6	9	11	12	12	12	12	11	8	6	4