UV Index in Siao, Thailand

Last updated: July 2, 2025

Understanding the UV Index in Siao, Thailand is crucial for safeguarding your skin from harmful ultraviolet rays that can lead to sunburn and long-term skin damage. With a tropical climate that typically experiences high UV levels, particularly during midday hours, awareness of these levels can make a significant difference in promoting skin health. Notably, peak UV Index readings can soar to a staggering 15 around noon, making it essential for residents and visitors alike to take protective measures against the sun's relentless intensity. By staying informed about the UV Index, you can enjoy Siao's vibrant outdoor lifestyle while minimizing the risks associated with sun exposure.

Hourly UV Index in Siao

The UV Index presents a fascinating hourly journey throughout the day. It begins gently at 1 at 07:00, but as the sun climbs higher, the intensity peaks dramatically. By 10:00, it hits 11, and the sun is truly bearing down, reaching a maximum of 15 at 12:00. The afternoon sees a slight decline, with values addressing safety as we pass 14:00 at 10 and descend to 3 by 16:00. Finally, as the day winds down, the UV Index dips back to 1 by 17:00, and then fades to 0 as the sun sets at 19:00. It's a vivid reminder to embrace sun safety during the brightest parts of the day!

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	3	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	13	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 Siao

The UV index experiences significant seasonal fluctuations, with the highest values recorded from February to October, where it consistently ranks in the extreme exposure category. Notably, March, April, May, July, and August have a peak UV index of 14 to 15, indicating an extreme risk of harm from unprotected sun exposure, with a burn time of only 10 minutes. January and December show slightly lower levels, categorized as very high, with burn times of 15 minutes. Visitors and residents are advised to take extra precautions during the high-risk months, particularly from February through October, by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen frequently to safeguard against skin damage.

Monthly Maximum UV Index for Siao, Thailand

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

The table above highlights how UV exposure in Siao 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.

Siao'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
Siao	10	13	14	14	15	13	15	14	14	12	11	9