UV Index in Charlestown, Saint Kitts and Nevis

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Charlestown, Saint Kitts and Nevis, given the island’s tropical climate and high sun exposure. Being aware of UV levels helps individuals take necessary precautions against sunburn and long-term skin health issues, especially during the peak hours when the UV Index reaches its highest—peaking at 13 around noon. With temperatures often soaring and the sun's rays being intense, knowing when to seek shade and apply sunscreen is essential to enjoy the beautiful outdoors while protecting your skin. Embrace the sun safely by staying informed about the UV Index in Charlestown!

Hourly UV Index in Charlestown

As the sun climbs higher, the UV Index reaches its peak intensity around 12:00 PM, soaring to a striking 13—a clear signal for outdoor enthusiasts to take precautions. The morning hours start gently, with a low of 1 at 07:00 AM, gradually escalating to 6 by 09:00 AM and hitting 9 at 10:00 AM. By 11:00 AM, the sun begins to assert itself with a 12. However, as the afternoon progresses, the UV intensity starts to wane, dropping to 10 at 2:00 PM, and tapering off to a mere 2 by 5:00 PM. As daylight diminishes, the UV Index dwindles to 0 by 7:00 PM, inviting a much-needed respite from the sun’s relentless rays. Always be vigilant and 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	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	13	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 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 Charlestown

Throughout the year, seasonal changes in the UV Index highlight significant variations in sun exposure risk. From February to October, the UV Index consistently peaks at 13, categorizing these months as experiencing extreme exposure levels; notably, the burn time during this period is only 10 minutes. Consequently, March to October are considered high-risk months for sunburn and skin damage. By contrast, January, November, and December exhibit a lower UV Index of 9, classified as very high, with slightly longer burn times of 15 minutes. Visitors and residents are strongly advised to take precautions during the high-risk months, including wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Charlestown, Saint Kitts and Nevis

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Charlestown. 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 Charlestown, 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 Charlestown UV Index with Other Saint Kitts and Nevis Cities

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

Charlestown's solar exposure compared to other cities in Saint Kitts and Nevis. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Saint Paul's UVI	9	11	13	13	13	13	13	13	14	12	9	9
Middle Island UVI	9	11	13	13	13	13	13	13	14	12	9	9
Basseterre UVI	9	11	13	13	13	13	13	13	14	12	9	9
Charlestown	9	11	13	13	13	13	13	13	13	12	9	9
Market Shop UVI	9	11	13	13	13	13	13	13	13	12	9	9
Fig Tree UVI	9	11	13	13	13	13	13	13	13	12	9	9