UV Index in Nan, Thailand

Last updated: July 2, 2025

In Nan, Thailand, awareness of the UV Index is crucial for both residents and visitors, as it directly impacts skin health and sunburn prevention. Understanding UV levels can help you make informed decisions about sun exposure, especially during peak hours when the index soars—reaching a maximum of 14 between noon and 1 PM. With Nan's tropical climate, the sun can be particularly intense, creating a higher risk for harmful UV radiation. Stay informed and protect your skin while enjoying all the beauty that Nan has to offer!

Hourly UV Index in Nan

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 Nan

The UV Index data highlights significant seasonal changes, with the most critical months for UV exposure occurring from February to October, where the index reaches extreme levels of 11 to 14 and a short burn time of just 10 minutes. Specifically, the highest values are recorded from May through August. As we transition into November and December, the index lowers to very high levels of 10 and 8, respectively, allowing for slightly longer burn times of 15 minutes. Visitors and residents should take precautions during high-risk months by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, particularly between 10 AM and 4 PM when the sun's rays are most intense.

Monthly Maximum UV Index for Nan, Thailand

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

The table above highlights how UV exposure in Nan 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.

Nan'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
Nan	9	11	13	13	14	14	14	14	13	13	10	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