UV Index in Kalmunai, Sri Lanka

Last updated: July 2, 2025

Understanding the UV Index is crucial for the residents and visitors of Kalmunai, Sri Lanka, where the tropical climate can bring intense sun exposure. With peak UV levels reaching as high as 12 during midday, awareness of UV radiation helps in preventing sunburn and protecting long-term skin health. As Kalmunai experiences a hot and humid climate characterized by significant daylight hours, knowing how to manage your sun exposure is essential for enjoying the outdoors safely. Stay informed and take the necessary precautions to safeguard your skin against harmful UV rays!

Hourly UV Index in Kalmunai

The UV Index throughout the day reveals a striking pattern of solar intensity. Early risers at 07:00 experience a mild level of 2, but as the sun climbs higher, the intensity surges. By 10:00, it reaches a peak of 10, and the midday hours from 11:00 to 12:00 are even more intense, with a UV Index of 12—the point at which protective measures become essential. As the afternoon progresses, the index begins to decline, dropping to 7 at 14:00 before easing to 4 by 15:00. The evening brings relief, with the index plummeting to 1 by 17:00 and eventually fading to 0 after 18:00. To make the most of the sun, enjoy the morning hours, but be cautious during peak times and keep that sunscreen handy!

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	10	very high	15 min
14:00	7	high	25 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 Kalmunai

The seasonal UV index data indicates persistent extreme exposure levels throughout the year, with minimal fluctuations in the burn time, which remains at just 10 minutes across all months. The highest risk months are March and April, both reaching a UV index of 15, making it crucial for residents and visitors to exercise heightened caution during this period. Visitors and residents are advised to take protective measures by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, particularly during midday hours when the sun's intensity is greatest. Staying informed and prepared is essential for enjoying the outdoors safely in this high UV environment.

Monthly Maximum UV Index for Kalmunai, Sri Lanka

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

The table above highlights how UV exposure in Kalmunai 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.

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