UV Index in Saint Joseph, Dominica

Last updated: August 1, 2025

In Saint Joseph, Dominica, understanding the UV Index is crucial for protecting your skin from harmful sun exposure. With high UV levels, particularly between 10:00 AM and 2:00 PM, residents and visitors alike should be aware of sunburn risks and skin health. The tropical climate exposes residents to significant sunlight year-round, making it essential to stay informed about UV levels. By monitoring the UV Index, you can take proactive measures to enjoy the sun safely, ensuring that your time in this beautiful locale is both enjoyable and protective.

Hourly UV Index in Saint Joseph

The UV Index today showcases a dramatic rise in intensity as the sun reaches its zenith. Starting at a minimal 1 at 07:00, the index climbs steadily, peaking at an impressive 14 by 12:00, marking the day's highest point of sun exposure. From 11:00 to 13:00, when the UV Index registers between 12 and 13, it's crucial to protect your skin from potential damage. As the afternoon progresses, the index begins to dip, settling back to 10 at 14:00 and gradually declining to 1 by 17:00, making the evening safer for outdoor activities. With a final reading of 0 at 19:00, the day's sunlight wanes, urging caution for those venturing out during 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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Saint Joseph

The UV Index shows significant seasonal variations, with the most intense exposure occurring from February through October, where the index reaches levels categorized as extreme. During these months, particularly in March, April, May, July, and August, the UV Index peaks at 13 to 14, indicating a very short burn time of just 10 minutes. January, November, and December feature lower UV levels, classified as very high, with slightly longer burn times of 15 minutes. Visitors and residents should exercise caution during the high-risk months by seeking shade, wearing protective clothing, and applying sunscreen frequently to mitigate the risk of UV-related harm.

Monthly Maximum UV Index for Saint Joseph, Dominica

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Saint Joseph. 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 Saint Joseph, 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 Saint Joseph UV Index with Other Dominica Cities

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

Saint Joseph's solar exposure compared to other cities in Dominica. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Marigot UVI	10	11	13	14	14	13	14	13	13	12	10	9
Saint Joseph	10	11	13	14	14	13	14	13	13	12	10	9
Portsmouth UVI	10	11	13	14	14	13	14	13	13	12	10	9
Mahaut UVI	10	11	13	14	14	13	14	13	13	12	10	9
Roseau UVI	10	11	13	14	14	13	14	13	13	12	10	9
Berekua UVI	10	11	13	14	14	13	14	13	13	12	10	9