San Juan, San Juan
Low0.5
UV Index · Now
Step out.
You can step out without sun protection.
Unprotected
6 hr 40 min
until skin starts to burn.
With SPF 30
200 hr
Average unprotected skin. Lighter skin burns faster, darker skin slower.
HeatComfortable
Air
26°
Feels like
26°
Humidity
81%
Questions about San Juan today
- What is the UV index in San Juan right now?
- The UV index in San Juan, San Juan is 0.5 — categorised as Low. You can step out without sun protection.
- Is it safe to go outside in San Juan today?
- Yes — UV is low (0.5) in San Juan right now. You can step out without sun protection.
- How long does it take to get sunburn in San Juan?
- Average unprotected skin starts to burn in roughly 6 hr 40 min at the current UV index of 0.5 in San Juan. SPF 30 multiplies that window by about 30×. Lighter skin burns faster; darker skin burns more slowly.
- What does the heat feel like in San Juan today?
- Air temperature is 26°C with 81% humidity, giving a "feels like" reading of 26°C — comfortable.
- When is the safest time to step outside in San Juan?
- UV is highest between 11 am and 4 pm. Early mornings (before 9 am) and late afternoons (after 5 pm) are the safest windows for unprotected skin in San Juan, especially through summer.