UV Index in Ratchasan, Thailand

Last updated: July 2, 2025

Awareness of the UV Index in Ratchasan, Thailand is crucial for maintaining healthy skin and preventing sunburn. With the region's tropical climate and high UV exposure, particularly during the midday hours when the index can reach a dangerous level of 14, understanding UV levels can help you make informed decisions about sun protection. Whether you're enjoying outdoor activities, basking in the sun, or simply going for a walk, being mindful of the UV Index empowers you to safeguard your skin against harmful effects. Don't let the beauty of Ratchasan's sunshine come at a cost—stay informed and protect your health!

Hourly UV Index in Ratchasan

The UV Index journey throughout the day reveals a dynamic and intense sunlight experience. Starting with a gentle maximum of 1 at 7:00 AM, the index climbs steadily, reaching 3 by 8:00 AM. It then takes a commanding leap to 6 at 9:00 AM, before peaking at a striking 14 around 12:00 PM—the moment when sun safety is most crucial. As the afternoon progresses, the UV intensity begins to taper off, dipping to 10 at 2:00 PM, and down to 4 by 4:00 PM. Finally, the day wraps up with a return to more manageable levels, settling at 0 by 7:00 PM. This data highlights the importance of protective measures during peak hours when the sun’s rays are 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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	14	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 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 Ratchasan

Throughout the year, UV levels exhibit significant seasonal fluctuations, with the highest risk months occurring from February to August, during which the UV Index often reaches extreme levels of 12 to 14. In these months, the burn time is notably short, at just 10 minutes, necessitating diligent sun protection measures. Conversely, January and December have slightly lower UV indices (10 and 9, respectively) and, while categorized as very high, they still require caution with a burn time of 15 minutes. Visitors and residents are strongly advised to wear sunscreen, protective clothing, and sunglasses during high UV periods, particularly between late winter and summer, to minimize skin damage and health risks.

Monthly Maximum UV Index for Ratchasan, Thailand

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

The table above highlights how UV exposure in Ratchasan 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.

Ratchasan'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
Ratchasan	10	12	14	14	14	13	14	14	13	13	11	9
Chon Buri UVI	10	13	14	14	14	13	14	14	13	13	10	9