Last updated: July 2, 2025
Understanding the UV Index in Ratsada, Thailand, is crucial for maintaining skin health and preventing sunburn. With the region’s tropical climate, residents and visitors face varying UV levels throughout the day, peaking in the midday hours when the UV Index can reach a maximum of 13. Recognizing these levels not only helps you protect your skin but also empowers you to enjoy outdoor activities safely. Be aware of the intensity of UV radiation, especially from 10 AM to 2 PM, to effectively mitigate the risks associated with overexposure in this vibrant locale.
The UV Index throughout the day follows a distinct pattern of rising intensity and eventual decline. Starting at a mild 1 at 7:00 AM, it quickly ramps up, reaching 2 by 8:00 AM and hitting 5 by 9:00 AM. The sun climbs higher, peaking at 13 during the midday hours from 12:00 PM to 1:00 PM, a time when protective measures are essential. As the afternoon progresses, the index gently descends to 10 at 2:00 PM and further dips to 7 by 3:00 PM. The sun begins to wane, bringing not only a cooler feel but also a significant drop to 2 by 5:00 PM and finishing the day at a safe 0 after 7:00 PM. For those basking in the sunlight, these shifts serve as timely reminders to stay protected during peak hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 5 | moderate | 30 min |
10:00 | 8 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 13 | 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 |
Throughout the year, the UV Index remains consistently high, reaching extreme levels from January to November, with values peaking at 15 in March and April. The risk of skin damage is significant, as the burn time is consistently limited to just 10 minutes. The months of February, March, April, May, August, September, and October are particularly high-risk, maintaining UV Index scores of 14 or higher. Residents and visitors are strongly advised to take precautions during these months, such as wearing protective clothing, using broad-spectrum sunscreen, and seeking shade whenever possible. Staying vigilant about UV exposure is essential to protect skin health year-round.
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 |
Ratsada | 12 | 14 | 15 | 15 | 14 | 13 | 13 | 14 | 14 | 14 | 12 | 11 |