Guatemala City UV index in September
Typical ultraviolet levels for Guatemala City during September, from the past year of data.
Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
September average UTC
Guatemala City UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Guatemala City in September?
In September, Guatemala City's typical UV index is about 14.4676 — a extreme risk level. Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
Across the year, Guatemala City sees the strongest UV in Summer, peaking around 14.7462 in May. Plan sun protection accordingly.