UV Index in Plymouth, United States

Last updated: May 3, 2025

In Plymouth, United States, staying informed about the UV Index is crucial for protecting your skin and overall health. As UV levels can fluctuate significantly throughout the day, understanding these changes can help you prevent sunburn and reduce the risk of long-term skin damage. With a humid subtropical climate (Cfa), Plymouth experiences varying UV exposure risks, particularly during the summer months when the sun is at its most intense, peaking around noon to early afternoon. By keeping an eye on the UV Index, you can enjoy the outdoors while safeguarding your skin from harmful UV radiation.

Hourly UV Index in Plymouth

As the sun rises, the UV Index begins its climb, starting from a gentle 1 at 7:00 AM. By 9:00 AM, it reaches 3, signaling that it’s time to start thinking about sun protection. The peak intensity hits at 1:00 PM with a blistering 11, highlighting the importance of staying shaded and applying sunscreen. The afternoon sees a gradual taper, with indices of 10 at 12:00 PM and 14:00 PM, before descending to 5 by 4:00 PM. As the day winds down, the UV levels ease back to 1 by 7:00 PM, making for a safer evening outdoors. Stay sun-smart and enjoy your day!

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	1	low	45 min
08:00	2	low	45 min
09:00	3	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Plymouth

As the seasons change, so does the UV Index, significantly impacting sun exposure and skin health. Notably, high-risk months occur between March and August, where UV levels reach their peak, especially in May and July with extreme categories (11), indicating a burn time as short as 10 minutes. From February to October, sun exposure should be approached with caution, as the index consistently marks very high to extreme levels. It is crucial for both visitors and residents to prioritize sun safety during these months by seeking shade, wearing protective clothing, and applying sunscreen regularly. In contrast, the lower-risk months of January, November, and December present moderate levels, but it is always wise to remain vigilant about UV exposure.

Monthly Maximum UV Index for Plymouth, United States

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

The table above highlights how UV exposure in Plymouth compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Plymouth's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Plymouth	4	6	8	10	11	10	11	10	9	8	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5