UV Index in Welisara, Sri Lanka

Last updated: May 3, 2025

In Welisara, Sri Lanka, understanding the UV Index is crucial for everyone who enjoys the beautiful sun-filled days. Awareness of UV levels not only helps in preventing sunburn but also plays a vital role in maintaining overall skin health. With a tropical climate typical of the region, UV exposure can peak significantly, especially around midday with indices reaching as high as 14. As the day progresses from morning to afternoon, it’s essential to stay informed about the UV readings to protect yourself and your loved ones from harmful effects. Stay safe under the sun by monitoring the UV Index!

Hourly UV Index in Welisara

The UV Index data for today reveals a dynamic pattern of solar intensity. Starting off at a modest 2 at 07:00, the index climbs steadily, reaching a peak of 14 by 11:00 and 12:00, indicating a high risk of harm from unprotected sun exposure during these hours. As the afternoon progresses, the index begins to decline, dipping to 8 by 14:00 and falling to 5 by 15:00. By evening, the UV Index drops dramatically to 1 at 17:00, and finally sinks to 0 after 18:00, making the evening hours safe for outdoor activities. Remember to stay protected 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	2	low	45 min
08:00	5	moderate	30 min
09:00	8	very high	15 min
10:00	12	extreme	10 min
11:00	14	extreme	10 min
12:00	14	extreme	10 min
13:00	12	extreme	10 min
14:00	8	very high	15 min
15:00	5	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 Welisara

The UV Index shows a consistently high level of solar radiation throughout the year, with the most intense months being March (Index 15) and April and September (Index 14), all categorized as extreme exposure, where even brief sun exposure can lead to burns in as little as 10 minutes. While January to July and September to November also maintain an extreme level, December has a slightly lower risk with an Index of 10, categorized as very high, allowing for a 15-minute burn time. Visitors and residents should take precautionary measures, particularly from March through October, by wearing sunscreen, protective clothing, and seeking shade to minimize the risk of harmful UV exposure.

Monthly Maximum UV Index for Welisara, Sri Lanka

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

The table above highlights how UV exposure in Welisara 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.

Welisara'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
Welisara	12	13	15	14	14	13	12	13	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