UV Index in Sakawa, Japan

Last updated: June 2, 2025

Understanding the UV Index in Sakawa, Japan is essential for protecting your skin and overall health. With the sun's intensity varying throughout the day, being aware of UV levels can help prevent sunburn and long-term skin damage. In this Cfa climate zone, Sakawa experiences significant UV exposure, particularly during peak hours between 10:00 AM and 2:00 PM, when values can soar to a striking 12. Keeping track of the UV Index allows residents and visitors alike to make informed decisions about sun safety, ensuring a healthier, more enjoyable outdoor experience.

Hourly UV Index in Sakawa

As the day unfolds, the UV Index climbs steadily, peaking at a striking 12 around noon, signaling a high risk for skin damage without protection. Early risers at 07:00 encounter a mild 2, but the intensity increases quickly, reaching 9 by 10:00 and a critical 11 by 11:00. From 12:00 to 13:00, the index holds its highest point at 12, making it essential to seek shade or apply sunscreen. After 13:00, the UV levels gradually decrease, dropping back to a manageable 4 by 16:00 and winding down to a safe 1 by 18:00. This hourly data serves as a reminder to take sun safety precautions, especially 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	4	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	11	extreme	10 min
14:00	9	very high	15 min
15:00	6	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 Sakawa

Throughout the year, the UV Index demonstrates significant seasonal changes, notably peaking during the summer months. From January to February, UV exposure is moderate, but by March and April, the index escalates to very high levels, indicating a rapid increase in UV radiation. The period from May to August showcases the highest risk, classified as extreme, with a burn time of just 10 minutes—making these months particularly hazardous for skin exposure. As summer wanes into September and October, the UV levels remain very high, though they start to gradually decline. November and December see a return to moderate exposure levels. Visitors and residents are advised to take precautions especially during the high-risk months of May through August, such as wearing protective clothing, applying sunscreen regularly, and seeking shade during peak hours to minimize UV-related health risks.

Monthly Maximum UV Index for Sakawa, Japan

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

The table above highlights how UV exposure in Sakawa 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.

Sakawa'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
Sakawa	4	6	9	10	12	12	12	12	10	8	6	4