San Juan UV index in October
Typical ultraviolet levels for San Juan during October, 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.
11.3
UV Index
October average UTC
Low
Moderate
High
Very High
Extreme
October UV
11.3309
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 October highlighted.
Visiting San Juan in October?
In October, San Juan's typical UV index is about 11.3309 — 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.
