UV Index in Saint-Laurent-du-Maroni, French Guiana

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Saint-Laurent-du-Maroni, French Guiana, where the tropical climate presents unique challenges for skin health. With UV levels peaking at an intense 12 around midday, awareness of the UV Index can help in preventing sunburns and reducing the risk of long-term skin damage. Being situated in an Af climate zone, this region experiences considerable sunlight throughout the year, making it essential for locals and visitors alike to monitor these UV levels to enjoy outdoor activities safely while protecting their skin.

Hourly UV Index in Saint-Laurent-du-Maroni

The UV Index throughout the day showcases a dramatic rise and fall, starting at a mild 1 at 07:00 and escalating to a peak of 12 by noon. As the sun reaches its zenith, the index remains at a strong 12 from 12:00 to 13:00, indicating a high risk for unprotected skin. Following this midday intensity, the UVI gradually decreases, dipping to 8 by 15:00, then dropping to 4 by 16:00. As the late afternoon approaches, the numbers decline further, landing at 2 by 17:00 and finally retreating to a safe 0 after sunset at 19:00. It's crucial to take precautions during those peak hours to ensure skin safety in such intense UV conditions!

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	10	very high	15 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Saint-Laurent-du-Maroni

Throughout the year, the UV Index remains notably high, with extreme exposure levels recorded from January to December. The peak months are March and April, where the UV Index reaches 16 and 15, respectively, indicating a particularly high risk for skin damage with a burn time of just 10 minutes. Even in the summer months, the Index stays elevated at 12-14, emphasizing the need for vigilance. Visitors and residents are advised to take preventive measures, such as applying sunscreen, wearing protective clothing, and seeking shade, regardless of the month, as optimal sun safety practices are essential year-round due to the consistently severe burn times associated with this UV exposure.

Monthly Maximum UV Index for Saint-Laurent-du-Maroni, French Guiana

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Saint-Laurent-du-Maroni. 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-Laurent-du-Maroni, 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-Laurent-du-Maroni UV Index with Other French Guiana Cities

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

Saint-Laurent-du-Maroni's solar exposure compared to other cities in French Guiana. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Matoury UVI	13	14	16	16	14	13	12	13	13	13	13	12
Remire-Montjoly UVI	13	14	16	16	14	13	12	13	13	13	13	12
Cayenne UVI	13	14	16	16	14	13	12	13	13	13	13	12
Kourou UVI	13	14	16	16	14	13	12	13	13	13	13	12
Saint-Laurent-du-Maroni	13	14	16	15	14	13	12	13	13	13	13	11