UV Index in Chiang Dao, Thailand

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Chiang Dao, Thailand, where the tropical climate brings ample sun and varying UV levels throughout the day. Awareness of UV levels is essential for effective sunburn prevention and maintaining optimal skin health, especially during peak hours when the index soars to a maximum of 14. Given Chiang Dao's Aw climate classification, the risk of harmful exposure can be significant, particularly from late morning to early afternoon. By staying informed about the UV Index, you can protect yourself against the long-term effects of UV radiation while enjoying the beautiful outdoor scenery this remarkable region has to offer.

Hourly UV Index in Chiang Dao

As the day unfolds, the UV Index climbs steadily, beginning at a gentle 1 at 7:00 AM. By 8:00 AM, it reaches a moderate 3, but the real surge comes between 9:00 AM and 1:00 PM, where it hits a striking 14 at both 12:00 PM and 1:00 PM. It's crucial to stay protected during these peak hours, especially at 11:00 AM when it peaks at 12. Post-lunchtime, the intensity starts to wane; the index drops to 11 at 2:00 PM, and continues its descent down to a mere 1 by 6:00 PM, before finally resting at 0 by 7:00 PM. Plan your day accordingly and take care to shield yourself from those intense rays during the 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	9	very high	15 min
11:00	12	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	5	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 Chiang Dao

Throughout the year, UV Index levels exhibit significant seasonal variation, with the highest values observed from March to October. During this period, the UV Index peaks at 14, categorized as extreme from May to September, where the recommended maximum sun exposure is only 10 minutes before burns can occur. January and February start with a very high rating of 9 and 10, respectively, allowing for a slightly longer burn time of 15 minutes. Notably, the months of March, April, and October transition back to extreme but still maintain 10 minutes of safe exposure. For residents and visitors, it is crucial to take protective measures, especially during the high-risk months from March to October. Recommendations include wearing broad-spectrum sunscreen, protective clothing, and seeking shade during peak sun hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Chiang Dao, Thailand

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

The table above highlights how UV exposure in Chiang Dao 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.

Chiang Dao'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
Chiang Dao	9	10	13	13	14	14	14	14	14	13	10	8
Chon Buri UVI	10	13	14	14	14	13	14	14	13	13	10	9