San Antonio UV index in May
Typical ultraviolet levels for San Antonio during May, from the past year of data.
Extreme
San Antonio
Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
11.7
UV Index
May average UTC
Low
Moderate
High
Very High
Extreme
May UV
11.7334
Risk level
Extreme
Yearly peak
12.6002
Peak month
July
San Antonio UV index — monthly trend
Average UV index by month over the past year, with May highlighted.
Visiting San Antonio in May?
In May, San Antonio's typical UV index is about 11.7334 — a extreme risk level. Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
Across the year, San Antonio sees the strongest UV in Summer, peaking around 12.6002 in July. Plan sun protection accordingly.
