Knoxville UV index in September
Typical ultraviolet levels for Knoxville during September, from the past year of data.
Very High
Knoxville
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8.4
UV Index
September average UTC
Low
Moderate
High
Very High
Extreme
September UV
8.3898
Risk level
Very High
Yearly peak
10.8046
Peak month
July
Knoxville UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Knoxville in September?
In September, Knoxville's typical UV index is about 8.3898 — a very high risk level. Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
Across the year, Knoxville sees the strongest UV in Summer, peaking around 10.8046 in July. Plan sun protection accordingly.
