UV Index in Sinnamary, French Guiana

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Sinnamary, French Guiana, a region known for its warm climate and abundant sunshine. With UV levels often peaking at 14 during midday hours, awareness of sun exposure can make a significant difference in preventing sunburn and maintaining long-term skin health. In this tropical paradise, where the sun's intensity can be deceptively strong, knowing when to seek shade or apply sunscreen is essential for enjoying the outdoors safely. Stay informed and protect your skin against the potent UV rays that characterize Sinnamary's vibrant climate!

Hourly UV Index in Sinnamary

The UV Index displays a dramatic rise throughout the morning and peaks at 14 between 12:00 PM and 1:00 PM, marking the highest intensity of the day. Beginning with a gentle 1 at 7:00 AM, the intensity escalates quickly, reaching 12 by 11:00 AM and encouraging sun safety measures. After hitting its zenith, the index begins to decline, dropping to 8 by 3:00 PM before easing further to 2 by 5:00 PM and finally settling at 0 by 7:00 PM. This fluctuation underscores the importance of protecting your skin during peak hours, particularly between 10:00 AM and 2:00 PM, when the sun's rays can be most harmful.

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	5	moderate	30 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	14	extreme	10 min
13:00	14	extreme	10 min
14:00	12	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 Sinnamary

Throughout the year, the UV Index remains exceptionally high in this region, peaking at 16 during both March and April, categorizing these months as high-risk for UV exposure. The extreme exposure category applies from January through May, with consistent burn times of just 10 minutes, indicating that prolonged sun exposure can lead to severe skin damage. While the UV Index slightly decreases during the summer months, it remains at a concerning level, particularly during February to May. Visitors and residents are strongly advised to take protective measures by wearing sunscreen, long sleeves, and UV-blocking sunglasses, especially during these high-risk months to minimize the risk of skin damage. Regular checks of the UV Index are recommended to stay informed and safe.

Monthly Maximum UV Index for Sinnamary, French Guiana

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

The table above highlights how UV exposure in Sinnamary 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.

Sinnamary'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 UVI	13	14	16	15	14	13	12	13	13	13	13	11
Sinnamary	13	14	16	16	14	13	12	13	13	13	13	11