UV Index in Saiki, Japan

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in Saiki, Japan, where the subtropical Cfa climate often leads to increased sun exposure. By monitoring UV levels, you can better protect yourself against sunburn and long-term skin health issues. With peak indices reaching as high as 11 during midday hours, it's essential to be aware of these levels to enjoy Saiki's beautiful outdoor offerings while minimizing sun-related risks. Whether you're strolling along the coast or exploring local attractions, staying informed about the UV index can help you safeguard your skin and enhance your overall well-being.

Hourly UV Index in Saiki

At sunrise, the UV Index begins its ascent, starting at a mild 2 at 07:00. As the sun climbs higher, it peaks dramatically at 11 between 11:00 and 13:00, indicating a high potential for skin damage without protection. The intensity wanes in the afternoon, dropping to 9 at 14:00 before gradually tapering off to 3 by 16:00. As evening approaches, the UV Index lowers to 1 by 18:00, signaling a safe time to enjoy outdoor activities without heavy sun protection. It's a clear reminder that while the midday sun brings its share of joy, caution is essential 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	3	moderate	30 min
09:00	6	high	25 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	9	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	1	low	45 min

Monthly UV Index Trends in Saiki

As the seasons change, so do the UV Index levels, significantly influencing sun exposure risk throughout the year. High-risk months are from March to August, when the UV Index peaks at 11 to 12, indicating extreme exposure with a burn time as short as 10 minutes. Particularly critical are May and July, when the UV Index consistently reaches its maximum. Conversely, the winter months of January and December present a moderate risk with an Index of 4, allowing for a safer exposure time of 30 minutes. To ensure safety, visitors and residents are advised to take precautions during high UV Index months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours when UV exposure is greatest.

Monthly Maximum UV Index for Saiki, Japan

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

The table above highlights how UV exposure in Saiki 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.

Saiki'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
Saiki	4	6	9	10	11	11	12	12	10	7	6	4