Houston UV index in September
Typical ultraviolet levels for Houston during September, from the past year of data.
Very High
Houston
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
10
UV Index
September average UTC
Low
Moderate
High
Very High
Extreme
September UV
10.02
Risk level
Very High
Yearly peak
11.96
Peak month
July
Houston UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Houston in September?
In September, Houston's typical UV index is about 10.02 — 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, Houston sees the strongest UV in Summer, peaking around 11.96 in July. Plan sun protection accordingly.
