UV Index in Phon Sai, Thailand

Last updated: May 3, 2025

In Phon Sai, Thailand, being aware of the UV Index is crucial for safeguarding your skin health and preventing sunburn. Understanding the UV levels throughout the day can significantly influence your outdoor activities and choices, ensuring you enjoy the sunshine without risking skin damage. With the region's Aw climate, characterized by high temperatures and intense sunlight, the UV Index can soar to 15 midday, representing a serious risk for overexposure. By staying informed about these levels, you can protect yourself and your loved ones from harmful UV radiation while enjoying the vibrant beauty of your surroundings.

Hourly UV Index in Phon Sai

As the sun rises on a new day, the UV Index begins at a modest 1 at 7:00 AM, gradually climbing to reach its peak of 15 by 12:00 PM. The hours between 9:00 AM and 1:00 PM showcase the sun's intensity, highlighted by a significant spike to 11 at 10:00 AM and 14 at 11:00 AM. However, by the afternoon, the radiation starts to wane, dropping to 6 at 3:00 PM, and then tapering off significantly as evening approaches. By 6:00 PM, the UV Index returns to a safe level of 1, and by 7:00 PM, it settles at 0, signaling the end of peak solar radiation for the day. Remember, during those peak hours, it’s essential to protect your skin!

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	6	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 Phon Sai

Throughout the year, UV Index values exhibit significant seasonal changes, with the highest levels observed from February to October. This period is categorized as extreme, with the UV Index peaking at 15 in April and May. March through October present particularly high-risk months for sunburn, necessitating cautious outdoor exposure; during these months, just 10 minutes of direct sunlight can lead to skin damage. In contrast, January, November, and December show a drop to very high levels, with recommended burn times of 15 minutes. Residents and visitors are strongly advised to wear protective clothing, use broad-spectrum sunscreen with high SPF, and seek shade during peak sunlight hours to safeguard their skin throughout the year.

Monthly Maximum UV Index for Phon Sai, Thailand

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

The table above highlights how UV exposure in Phon Sai 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.

Phon Sai'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
Phon Sai	10	13	14	15	15	13	14	14	13	12	10	9