UV Index in Sigiriya, Sri Lanka

Last updated: July 2, 2025

In the breathtaking landscapes of Sigiriya, Sri Lanka, understanding the UV Index is crucial for everyone looking to enjoy the sun safely. The intense sun exposure typical in this tropical climate elevates UV levels throughout the day, reaching a peak of 13 around noon. By staying informed about these UV levels, you can effectively prevent sunburn and protect your skin health, ensuring your adventures don't come at a cost. With UV risks soaring between 10:00 AM and 1:00 PM, being vigilant and taking necessary precautions will help you savor the stunning beauty of Sigiriya without compromising your well-being.

Hourly UV Index in Sigiriya

The UV Index displays a stark increase throughout the morning, starting with a manageable 2 at 07:00, climbing to a moderate 4 by 08:00. As the sun climbs higher, the index peaks at 13 between 12:00 and 13:00, indicating strong UV radiation and the need for protection. Following this midday intensity, the numbers begin to decline, dipping to 8 at 14:00, and later dropping to a safe 2 by 16:00. By evening, UV exposure diminishes to 0 by 19:00, signaling an end to the day’s sunniest moments. Be mindful of this hourly fluctuation, especially during peak hours, to protect your skin!

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	2	low	45 min
08:00	4	moderate	30 min
09:00	7	high	25 min
10:00	10	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 min
15:00	4	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Sigiriya

Throughout the year, the UV Index remains critically high, peaking at 15 in March. The months of January to April continue to pose significant risk with UV Index values from 12 to 15, marking these as high-risk months for sun exposure. Although June through October have slightly lower indices ranging from 13 to 14, the exposure category remains extreme, indicating that visitors and residents should take precautions year-round. It is advisable to minimize outdoor activities during peak hours, wear protective clothing, and apply sunscreen regularly, especially from January to September, when the burn time is only 10 minutes. Even in December, although the UV Index drops to 10 with a longer burn time of 15 minutes, it is important to stay vigilant. Prioritizing skin protection is crucial for anyone spending time outdoors in this region.

Monthly Maximum UV Index for Sigiriya, Sri Lanka

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

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

Sigiriya's solar exposure compared to other cities in Sri Lanka. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Jaffna UVI	11	13	14	15	13	12	13	13	14	12	11	10
Moratuwa UVI	11	13	14	15	14	12	13	14	14	13	11	10
Maharagama UVI	11	13	14	15	14	12	13	14	14	13	11	10
Dehiwala-Mount Lavinia UVI	12	13	14	15	14	12	13	14	14	13	11	10
Sigiriya	12	13	15	14	14	13	13	14	14	13	12	10
Colombo UVI	12	14	14	15	14	13	13	13	14	13	11	10