UV Index in Sai Yok, Thailand

Last updated: May 3, 2025

Understanding the UV Index is vital for residents and visitors in Sai Yok, Thailand, where the tropical climate can lead to intense sun exposure. With UV levels peaking at a staggering 14 during midday, being aware of these numbers is crucial for preventing sunburn and promoting overall skin health. The region's climate, characterized by high temperatures and strong sunlight, poses significant risks for those who venture outdoors without proper protection. By staying informed about the UV Index, you can better safeguard your skin and enjoy the stunning natural beauty of Sai Yok with confidence.

Hourly UV Index in Sai Yok

As the sun rises, the UV Index starts off low at 1 by 7:00 AM, gradually climbing to a moderate 3 by 8:00 AM. However, by 9:00 AM, it takes a sharp leap to 6, signaling that sun protection should be considered. The peak intensity occurs at 12:00 PM, hitting a striking 14, where the sun’s rays are most potent and precautions are essential. The afternoon sees a slight decline, dropping to 11 by 2:00 PM, before further retreating to 8 at 3:00 PM. As the day winds down, the index decreases steadily, settling at 1 by 6:00 PM and fading to 0 by 7:00 PM. This data highlights the importance of staying vigilant during peak hours to protect yourself from harmful UV exposure.

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	6	high	25 min
10:00	10	very high	15 min
11:00	13	extreme	10 min
12:00	14	extreme	10 min
13:00	14	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Sai Yok

The UV index experiences significant seasonal fluctuations, maintaining extreme exposure levels from January to October, with values peaking at 14 in multiple months, indicating a burn time of just 10 minutes. From November onward, the index gradually decreases, transitioning to a very high rating, where the burn time extends to 15 minutes in both November and December. The highest-risk months are clearly the summer and early autumn months, from March to October, when the UV index is consistently at its peak. Visitors and residents are strongly advised to take protective measures, including wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to mitigate the risks associated with prolonged UV exposure.

Monthly Maximum UV Index for Sai Yok, Thailand

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

The table above highlights how UV exposure in Sai Yok 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.

Sai Yok'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
Sai Yok	11	12	14	14	14	14	14	14	14	13	10	9