San Juan UV index in July
Typical ultraviolet levels for San Juan during July, from the past year of data.
Extreme
San Juan
Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
13.7
UV Index
July average
Low
Moderate
High
Very High
Extreme
July UV
13.6631
Risk level
Extreme
Yearly peak
13.787
Peak month
August
San Juan UV index — monthly trend
Average UV index by month over the past year, with July highlighted.
Visiting San Juan in July?
In July, San Juan's typical UV index is about 13.6631 — a extreme risk level. Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
Across the year, San Juan sees the strongest UV in Summer, peaking around 13.787 in August. Plan sun protection accordingly.
