UV Index in Masuda, Japan

Last updated: May 3, 2025

In Masuda, Japan, awareness of the UV Index is essential for protecting your skin health and preventing sunburn. Understanding UV levels can help you make informed choices about sun exposure, ensuring you enjoy the beautiful outdoors without the risk of harmful effects. With a Cfa climate that brings warm summers and varying UV exposure throughout the day, residents and visitors may encounter high UV levels—reaching a peak of 11 at midday. By staying informed about the UV Index, you can take proactive measures to safeguard your skin while appreciating everything Masuda has to offer.

Hourly UV Index in Masuda

The UV Index paints a vivid picture of the sun's intensity throughout the day. Starting with a gentle 2 at 7:00 AM, the index climbs steadily, reaching 3 by 8:00 AM. As the sun rises higher, it peaks at an impressive 11 at noon, signaling a time when sun protection is crucial. The index begins to taper off in the afternoon, with readings of 10 at 1:00 PM and 8 at 2:00 PM, before gradually decreasing to 6 at 3:00 PM. By late afternoon, the UV Index returns to a more moderate 3 at 4:00 PM, and continues to decline, settling at 1 by 6:00 PM. It’s clear that the midday sun demands respect, making awareness of UV levels essential for outdoor safety.

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	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	1	low	45 min

Monthly UV Index Trends in Masuda

As the seasons change, so do UV levels, with notable high-risk months spanning from March to August when the UV Index reaches very high to extreme levels, significantly lowering burn times to just 10-15 minutes. Visitors and residents alike should be particularly vigilant during these months, taking precautions such as wearing sunblock, protective clothing, and seeking shade to minimize skin damage. From September to November, the UV Index decreases, entering the moderate to high exposure categories, where burn times gradually increase to 25-30 minutes. Therefore, while UV exposure is less intense in the colder months, it remains important to stay informed and practice sun safety year-round, especially during the peak summer months.

Monthly Maximum UV Index for Masuda, Japan

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

The table above highlights how UV exposure in Masuda 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.

Masuda'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
Masuda	4	5	8	10	11	11	12	12	10	7	5	3
Osaka UVI	4	6	8	11	11	11	12	11	10	7	5	3