UV Index in Wellfleet, United States

Last updated: June 2, 2025

In Wellfleet, United States, being aware of the UV Index is crucial for safeguarding your skin against the sun’s harmful effects. Understanding UV levels is vital not only for preventing painful sunburns but also for promoting long-term skin health and reducing the risk of skin cancer. Nestled in a Cfa climate zone, Wellfleet experiences high UV exposure, particularly between 10 AM and 2 PM, when the index can soar to 10—a level that indicates a very high risk of harm from unprotected sun exposure. Stay informed and protect yourself and your loved ones by monitoring local UV levels!

Hourly UV Index in Wellfleet

The UV Index throughout the day showcases a dramatic rise as the sun ascends, peaking at an intense 10 by 1:00 PM. Starting from a mild 1 at 7:00 AM, the index climbs steadily, hitting 8 by 11:00 AM and topping out at 9 and 10 during the peak afternoon hours. As the sun begins to descend, the UV levels dip gracefully to 7 by 3:00 PM and further down to 5 at 4:00 PM, before tapering off to 1 again by sunset at 7:00 PM. It’s a clear reminder to stay protected during those midday hours, where the sun's strength is at its highest.

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	3	moderate	30 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	8	very high	15 min
12:00	9	very high	15 min
13:00	10	very high	15 min
14:00	9	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Wellfleet

Throughout the year, UV exposure varies significantly, with high-risk months occurring from April to September when the UV Index reaches very high levels (8-10) and the recommended burn time drops to just 15 minutes. Visitors and residents should exercise caution during these months, seeking shade and applying sunscreen frequently to protect their skin. In contrast, the low-risk months of January and December feature a UV Index of 2, allowing for longer exposure times of up to 45 minutes without significant risk. Notably, February to March presents a moderate risk, with UV Index values of 4-5 and burn times of 30 minutes, making it essential to be vigilant as spring approaches. As the seasons transition, it's crucial to adjust sun safety practices accordingly.

Monthly Maximum UV Index for Wellfleet, United States

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

The table above highlights how UV exposure in Wellfleet 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.

Wellfleet'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
Wellfleet	2	4	5	8	9	10	9	9	8	6	4	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5