UV Index in Plymouth, United States

Last updated: July 2, 2025

Understanding the UV Index in Plymouth, United States, is crucial for promoting skin health and preventing sunburn. With UV levels peaking between 11:00 AM and 1:00 PM, reaching as high as 11 on clear days, residents need to be vigilant about sun safety to protect against harmful effects. Plymouth's Csa climate means it enjoys warm summers, making awareness of UV exposure particularly important during these months. By staying informed about UV levels, Plymouth residents can enjoy the outdoors while safeguarding their skin from unnecessary damage.

Hourly UV Index in Plymouth

The UV Index data highlights a dramatic rise in sun intensity as the day progresses. Starting early at 1 around 7:00 AM, it gradually climbs to 10 by noon, peaking at a staggering 11 at 1:00 PM. This is the moment when UV exposure becomes most concerning, emphasizing the importance of sun protection. As the afternoon unfolds, the index gracefully tapers down, dipping to 8 by 3:00 PM and further declining to 4 by 5:00 PM. By the time evening rolls in, the UV Index settles back to 1 at 7:00 PM, signaling a reprieve from the midday sun. This data can be a crucial guide for planning outdoor activities safely throughout the 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	4	moderate	30 min
10:00	6	high	25 min
11:00	9	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	6	high	25 min
17:00	4	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 the risk of sunburn and the need for sun protection. The months of March through August see the highest UV levels, with March and April peaking at an index of 8, while May and June reach an extreme level of 11. Visitors and residents should be particularly cautious during June and July, when burn times drop to just 10 minutes at the extreme index. As we transition into fall, the UV intensity declines, with October still presenting a high index of 6, but moving to a moderate risk by November and December. It is advisable for everyone to wear protective clothing, seek shade, and use sunscreen during these high-risk months to minimize the risk of UV-related health issues.

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
Plymouth	3	5	8	8	10	11	11	10	9	6	4	3
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5