UV Index in Rayong, Thailand

Last updated: May 3, 2025

Understanding the UV Index in Rayong, Thailand is vital for protecting your skin and overall health under the tropical sun. With UV levels peaking at an alarming 14 during midday, awareness of these metrics can be a game-changer in preventing sunburn and long-term skin damage. The coastal climate of Rayong, characterized by high temperatures and humidity, increases your risk of UV exposure, making it essential to check daily indices. Stay informed and enjoy the outdoors while safeguarding your skin!

Hourly UV Index in Rayong

Starting the day at a mild UV Index of 1 at 7:00 AM, the sun gradually climbs its way to peak intensity. By 10:00 AM, the index hits a striking 10, climbing to its maximum of 14 at noon, presenting a high risk of harm from unprotected sun exposure. As the afternoon progresses, the UV levels remain elevated at 13 from 12:00 to 1:00 PM but then begin to taper off by 3:00 PM, dropping to 7. The evening brings a significant decrease, with the index falling back to 1 by 5:00 PM and fading into 0 as the sun sets at 7:00 PM. It's essential to take precautions 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	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	13	extreme	10 min
14:00	11	extreme	10 min
15:00	7	high	25 min
16:00	4	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 Rayong

The UV Index fluctuates throughout the year, demonstrating particularly high values from February to November, with March to September experiencing the peak levels of 14, categorized as extreme. The high-risk months for UV exposure are from February to October, when the burn time is notably short at just 10 minutes. As a result, it is crucial for both visitors and residents to take precautions during this period. Sunscreen, protective clothing, and hats are essential, and individuals should seek shade during peak sun hours. For the months of January and December, while the UV Index drops to 10, the exposure is still categorized as very high, warranting attention to sun safety. Staying informed and proactive about UV exposure can help mitigate skin damage and enhance outdoor experiences.

Monthly Maximum UV Index for Rayong, Thailand

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

The table above highlights how UV exposure in Rayong 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.

Rayong'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
Rayong	10	13	14	14	14	13	14	14	14	13	11	10