UV Index in Lethem, Guyana

Last updated: June 2, 2025

Understanding the UV Index in Lethem, Guyana is essential for safeguarding your skin and overall health. With the region's tropical Am climate, high UV levels can pose significant risks, particularly during midday when values soar to a critical 13. By being aware of these levels, you can effectively prevent sunburn, reduce the risk of long-term skin damage, and take necessary precautions during peak exposure hours. Whether you're enjoying the outdoors or simply going about your daily activities, knowledge of the UV Index empowers you to make informed decisions to protect your skin from harmful radiation.

Hourly UV Index in Lethem

As the sun rises, the UV Index begins its ascent, starting at a modest 1 at 07:00. By 08:00, it reaches 3, signaling a gradual increase in UV exposure. The peak arrives just before noon, with the index soaring to a maximum of 13 at 12:00, which means it's time to seek shade and apply sunscreen! As the afternoon unfolds, the index gradually declines, dropping to 9 by 14:00, and further easing to 5 at 15:00. As the sun sets and the day cools, the index tapers off to 1 by 17:00 and finally drops to 0 by 19:00. This hourly journey illustrates the critical need for sun protection during peak hours, especially from 10:00 to 13:00, when the sun’s rays are at their most intense. Stay safe and enjoy the sunshine!

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	10	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 min
15:00	5	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Lethem

The UV Index exhibits significant seasonal changes, with the highest values occurring from February to April, where it peaks at 16-17. These months, characterized by an extreme exposure category, present a high-risk for sunburn, with a burn time of merely 10 minutes. Although the UV Index slightly declines from May through July, it remains in the extreme category, emphasizing the necessity for sunscreen and protective clothing year-round. From August to December, the index stabilizes around 13, retaining the extreme status. Visitors and residents should exercise caution during all months, especially in March and April, and ensure they are adequately protected against harmful UV exposure to safeguard their skin health.

Monthly Maximum UV Index for Lethem, Guyana

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

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

Lethem's solar exposure compared to other cities in Guyana. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Georgetown UVI	13	14	15	15	14	13	12	13	13	13	12	12
Bartica UVI	13	14	15	15	14	13	13	13	13	13	12	12
New Amsterdam UVI	13	14	15	16	14	13	12	13	13	13	12	12
Anna Regina UVI	13	14	15	15	14	13	13	13	13	13	12	11
Linden UVI	13	14	16	16	14	13	12	13	13	13	12	12
Lethem	13	15	16	17	15	13	12	13	13	13	13	13