UV Index in Guernsey, United States

Last updated: July 2, 2025

Understanding the UV Index in Guernsey, United States is crucial for protecting your skin and overall health. With the potential for high UV levels, particularly between 11:00 AM and 1:00 PM when they reach up to 11, recognizing the intensity of UV radiation can help prevent painful sunburns and long-term skin damage. Guernsey's BSk climate presents unique exposure risks, particularly during the sunnier months, making it essential for residents and visitors alike to stay informed about daily UV levels. By keeping an eye on the UV Index, you can enjoy the outdoors safely and ensure your skin stays healthy and protected from harmful rays.

Hourly UV Index in Guernsey

The UV Index today showcases a steady climb as the sun rises, starting with a mild 1 at 07:00. By 10:00, it ramps up to 7, signaling a more intense sun exposure. The peak arrives at 12:00 and 13:00, with a striking 11, indicating a high risk of harm from unprotected sun exposure. As the afternoon wanes, the index gradually declines to 8 at 15:00 and further down to 2 by 18:00, creating a safer environment for evening activities. Overall, the day's UV pattern emphasizes the importance of sun protection during the midday hours, while reassuring a more manageable level of UV exposure later in 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	7	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 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 Guernsey

Throughout the year, the UV Index exhibits significant seasonal variation, with the highest levels typically occurring from June to August. During these months, particularly in June and July, the UV Index reaches an extreme level of 11, necessitating careful sun protection as the burn time is reduced to just 10 minutes. April and May also present high risk with a very high UV Index of 10 and a burn time of 15 minutes. As daylight savings transitions into the fall, the UV Index notably decreases but remains a concern until October, when it falls to 6 (high risk). Residents and visitors are advised to take precautions during the peak months, such as seeking shade, wearing protective clothing, and applying sunscreen, to minimize the risk of skin damage and enhance outdoor enjoyment safely.

Monthly Maximum UV Index for Guernsey, United States

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

The table above highlights how UV exposure in Guernsey 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.

Guernsey'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
Guernsey	3	5	7	10	10	11	11	10	8	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