UV Index in Trincomalee, Sri Lanka

Last updated: July 2, 2025

Understanding the UV Index is crucial for everyone in Trincomalee, Sri Lanka, where the sun shines brightly nearly all year round. The UV Index provides vital information about the intensity of ultraviolet (UV) radiation, helping residents and visitors take necessary precautions to prevent sunburn and promote skin health. With Trincomalee's tropical climate, the risk of high UV exposure, especially between 10 AM to 2 PM, can reach alarming levels—peaking at a whopping 12 on the UV scale. By being aware of daily UV levels, you can enjoy the sun responsibly while keeping your skin safe from its harmful effects.

Hourly UV Index in Trincomalee

The UV Index data reveals a dynamic progression throughout the day, with the sun's intensity gradually rising from a modest 2 at 07:00 to a peak of 12 during both 11:00 and 12:00. This indicates a high risk for sun exposure, making it crucial to take protective measures. As the afternoon rolls in, the index declines, gently tapering off to 8 by 14:00, before plummeting to a mere 1 at 17:00 and hitting 0 by 19:00. Thus, for sun lovers and outdoor enthusiasts, the midday hours (10:00-14:00) are the golden time to enjoy the outdoors, while the diminishing levels later offer a safer reprieve. Remember to stay safe under the sun!

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	12	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 Trincomalee

The UV Index data reveals consistently extreme levels of UV exposure throughout the year, particularly during the high-risk months from January to September, where values range from 12 to 15 and the burn time is a mere 10 minutes. Although October sees a slight decrease to 13 and November to 11, precautions remain essential as even December has a UV Index of 10, classified as very high with a burn time of 15 minutes. Visitors and residents should take proactive measures to protect their skin, such as wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak sunlight hours, especially from spring to early autumn when the sun's intensity is at its highest.

Monthly Maximum UV Index for Trincomalee, Sri Lanka

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

The table above highlights how UV exposure in Trincomalee 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.

Trincomalee'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
Trincomalee	12	13	15	14	13	12	12	13	14	13	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
Colombo UVI	12	14	14	15	14	13	13	13	14	13	11	10