Cancun UV index in September
Typical ultraviolet levels for Cancun during September, from the past year of data.
Extreme
Cancun
Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
12.6
UV Index
September average UTC
Low
Moderate
High
Very High
Extreme
September UV
12.5902
Risk level
Extreme
Yearly peak
13.6015
Peak month
June
Cancun UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Cancun in September?
In September, Cancun's typical UV index is about 12.5902 — a extreme risk level. Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
Across the year, Cancun sees the strongest UV in Summer, peaking around 13.6015 in June. Plan sun protection accordingly.
