UV Index in Sakawa, Japan

Last updated: July 2, 2025

Understanding the UV Index in Sakawa, Japan is crucial for maintaining skin health and preventing harmful sunburns. As residents enjoy the town's beautiful Cfa climate, characterized by warm summers and mild winters, awareness of UV levels becomes even more vital. The UV Index can soar dramatically during midday, peaking at 12, which indicates an extreme risk of harm from unprotected sun exposure. By staying informed about UV levels, you can take proactive measures to protect your skin and ensure an enjoyable outdoor experience in Sakawa.

Hourly UV Index in Sakawa

The UV Index data reveals a notable progression in sun exposure throughout the day. Starting at a modest 2 at 7:00 AM, it quickly escalates, peaking at a striking 12 by noon, indicating a high risk for harm from unprotected sun exposure. As the afternoon unfolds, the index gradually recedes, dropping to 9 at 2:00 PM and further decreasing to 1 by 7:00 PM. This pattern suggests that the sun’s intensity is at its most dangerous during the late morning and early afternoon, emphasizing the importance of sunscreen and protective measures during these critical hours. Stay safe under the sun!

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.
TimeUVICategoryTime to Burn
07:002low45 min
08:004moderate30 min
09:006high25 min
10:009very high15 min
11:0011extreme10 min
12:0012extreme10 min
13:0011extreme10 min
14:009very high15 min
15:007high25 min
16:004moderate30 min
17:002low45 min
18:001low45 min
19:001low45 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.
JanFebMarAprMayJunJulAugSepOctNovDec469101212121210764
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.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sapporo UVI2367999108532
Yokohama UVI35891111111110754
Tokyo UVI35891111111110754
Nagoya UVI468101111111110753
Osaka UVI468111111121110753
Sakawa469101212121210864