Last updated: July 2, 2025
Understanding the UV Index in Tha Mai, Thailand is crucial for maintaining skin health and preventing painful sunburns. With its tropical climate, Tha Mai experiences significant UV exposure, particularly during peak hours when the UV Index can reach as high as 14 around noon. By being aware of the UV levels throughout the day, residents and visitors can take proactive measures to protect themselves from harmful UV radiation, ensuring a safer and more enjoyable experience in this beautiful coastal town.
The UV Index throughout the day reveals a dynamic and intense sun exposure pattern. Starting off at a mild 1 at 7:00 AM, the index rises steadily, reaching 3 by 8:00 AM. As the morning unfolds, the UV levels escalate, peaking at an impressive 14 from 12:00 PM to 1:00 PM, marking the highest point of sun intensity. Even as the afternoon progresses, the index remains robust, at 11 by 2:00 PM and descending gradually to 7 by 3:00 PM. The sun starts to soften in the late afternoon, with readings dropping to 2 by 5:00 PM. By 6:00 PM, the UV exposure falls to 1, and after 7:00 PM, it rounds off at 0, signaling the end of the sun’s harsh effects for the day. It’s essential to stay protected during those peak hours, especially between 11:00 AM and 1:00 PM, to shield against the sun's strongest rays.
| 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 | 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 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index remains consistently high, particularly from January to October, where it frequently reaches extreme levels of 11 to 15. This period indicates a high risk of harm from unprotected sun exposure, with a rapid burn time of just 10 minutes for most months. March stands out as the peak month with a UV Index of 15, signaling an urgent need for protective measures. November and December show a slight decline, with UV Index values of 11 and 10, respectively, but still warrant caution as they are categorized as very high and high. To ensure safety, residents and visitors alike should adopt robust sun protection strategies, including wearing sunscreen, protective clothing, and seeking shade, especially during the high-risk months.
UV Risk Categories
| 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 |
| Tha Mai | 11 | 13 | 15 | 14 | 14 | 13 | 14 | 14 | 14 | 13 | 11 | 10 |