UV Index in Si Mueang Mai, Thailand

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Si Mueang Mai, Thailand, where the tropical climate and high sun exposure can significantly increase the risk of skin damage. With UV levels in this region peaking at a staggering 15 around noon, it's essential to be aware of the daily UV fluctuations to prevent sunburn and maintain healthy skin. By closely monitoring these levels—from a moderate index of **7 in the late morning to an extreme 4 early in the day—individuals can take proactive measures to protect themselves under the intense sun. So, whether you're enjoying outdoor activities or simply soaking up the vibrant culture, staying informed about the UV Index can make all the difference in safeguarding your skin health.

Hourly UV Index in Si Mueang Mai

As the sun rises, the UV Index begins its ascent, starting modestly at a maximum of 1 at 7:00 AM. By 8:00 AM, it climbs to a notable 4, signaling the need for sun protection. The day reaches its peak at 12:00 PM, where it soars to a striking 15, highlighting the intensity of midday sun. From there, it gradually dips; by 3:00 PM, it retreats to 7, before continuing down to 1 by 5:00 PM and 6:00 PM and finally dropping to 0 at 7:00 PM. This hourly fluctuation emphasizes the importance of vigilance in sun safety, especially during the midday hours when UV rays are at their most potent.

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	4	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	14	extreme	10 min
12:00	15	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 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 Si Mueang Mai

During the year, UV index readings show significant seasonal changes, particularly from January to October, where the highest risk occurs from February through October with extreme categories dominating this period. February, March, April, May, June, July, and August all reflect an extreme UV Index of 13 to 15, translating to a rapid burn time of just 10 minutes. September and October maintain a high risk with UV indices of 14 and 12, respectively. As the year transitions into November and December, the UV exposure category drops to very high with indices of 10 and 9, increasing burn time to 15 minutes. Residents and visitors are strongly advised to take precautions during high-risk months: seek shade, wear protective clothing, and apply sunscreen frequently to mitigate the risks associated with excessive UV exposure.

Monthly Maximum UV Index for Si Mueang Mai, Thailand

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Si Mueang Mai. 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 Si Mueang Mai, 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 Si Mueang Mai UV Index with Other Thailand Cities

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

Si Mueang Mai's solar exposure compared to other cities in Thailand. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mueang Nonthaburi UVI	10	12	14	13	14	13	14	14	13	12	9	8
Samut Prakan UVI	10	12	14	13	14	13	14	14	13	12	9	8
Bangkok UVI	10	12	14	13	14	13	14	14	13	12	9	8
Udon Thani UVI	9	11	13	14	14	13	14	14	14	12	10	9
Chon Buri UVI	10	13	14	14	14	13	14	14	13	13	10	9
Si Mueang Mai	10	13	14	14	15	13	15	14	14	12	10	9