UV Index in Roseau, United States

Last updated: July 2, 2025

Understanding the UV Index in Roseau is crucial for maintaining your skin health and preventing sunburn, especially given the region's Dfb climate, which features warm summers and cold winters. With UV levels peaking at an 8 during midday, it's essential for residents and visitors alike to stay informed about daily UV exposure risks. By knowing when the sun's rays are most intense, you can take proactive steps to protect your skin, ensuring that your outdoor activities remain enjoyable and safe. Whether you're out enjoying the vibrant local scenery or soaking up the sun, awareness of the UV Index can make all the difference in safeguarding your health.

Hourly UV Index in Roseau

As the sun rises, the UV Index starts at a gentle 1 at 07:00, gradually climbing to a moderate 2 by 08:00. By 09:00, it reaches a 3, indicating that sun protection is becoming more important. The day's peak occurs at 12:00, when the UV Index hits a high of 8, prompting caution for prolonged exposure. This intensity remains steady until 14:00, before tapering off slowly. At 15:00, it drops to 7, then decreases to 6 by 16:00, and falls further to 4 at 17:00. As the day winds down, the index retreats to a soothing 2 by 18:00 and concludes at 1 by 19:00, making the evening safe for outdoor strolls. Remember to protect your skin during those peak hours!

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	4	moderate	30 min
11:00	6	high	25 min
12:00	8	very high	15 min
13:00	8	very high	15 min
14:00	8	very high	15 min
15:00	7	high	25 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 Roseau

Throughout the year, UV exposure varies significantly, with key changes occurring as seasons shift. The high-risk months for UV exposure are from April to August, where the UV Index reaches very high levels (8-9) in May, June, July, and August, with a burn time as brief as 15 minutes. As summer transitions into fall, UV levels decrease, dropping to moderate categories in October and low levels during the winter months of November and December. Visitors and residents are advised to take extra precautions during the high-risk months by wearing protective clothing, applying sunscreen frequently, and seeking shade to minimize the risk of UV-related harm.

Monthly Maximum UV Index for Roseau, United States

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

The table above highlights how UV exposure in Roseau 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.

Roseau'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
Roseau	2	3	5	7	8	9	8	8	7	4	2	1
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