UV Index in Mersam, Indonesia

Last updated: July 2, 2025

Understanding the UV Index in Mersam, Indonesia is crucial for safeguarding your skin health and preventing the discomfort of sunburn. With its tropical Af climate, residents and visitors alike face significant UV exposure, particularly during the midday hours when the index soars to a peak of 12—indicating an extreme risk of harm from unprotected sun exposure. By being aware of UV levels, you can take proactive measures to protect yourself, ensuring that your time in the sun remains enjoyable and safe. Stay informed and make smart choices; your skin will thank you!

Hourly UV Index in Mersam

The UV Index data reveals a sun-soaked day with a notable spike in intensity around midday. Starting at a mild 1 at 7:00 AM, the UV levels gradually rise, reaching a peak of 12 by noon—an indication of extreme sun exposure. As the afternoon progresses, the index dips to 9 at 2:00 PM, before descending further to 3 by late afternoon. By evening, the risk drops to 1 and eventually to 0 after sunset, emphasizing the importance of sun protection during the day’s brightest hours, especially between 10:00 AM and 2:00 PM.

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	2	low	45 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	5	moderate	30 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Mersam

Throughout the year, the UV Index remains extremely high, with values consistently between 12 and 16, indicating a significant risk of harm from unprotected sun exposure. The high-risk months extend from January to May, where the UV Index peaks at 16 in March, while also reaching 15 in both February and April. Even during the summer months, the UV Index remains elevated, with values of 12 to 14, particularly in August and September. With a burn time of just 10 minutes across all months, it is crucial for both visitors and residents to take proactive measures against sun exposure, such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours. Staying informed and vigilant about UV levels is essential to prevent skin damage and maintain health year-round.

Monthly Maximum UV Index for Mersam, Indonesia

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

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

Mersam's solar exposure compared to other cities in Indonesia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Surabaya UVI	13	15	14	12	12	10	11	12	14	13	13	13
Bekasi UVI	14	16	16	14	11	10	10	11	13	15	14	13
Jakarta UVI	14	16	16	14	11	10	10	11	13	15	14	13
Medan UVI	13	15	15	15	14	12	12	13	14	14	13	12
Bandung UVI	15	16	16	15	12	11	11	12	14	15	15	14
Mersam	14	15	16	15	13	12	12	14	14	14	14	14