Portland UV index in September
Typical ultraviolet levels for Portland during September, from the past year of data.
High
Portland
High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
6.7
UV Index
September average UTC
Low
Moderate
High
Very High
Extreme
September UV
6.6664
Risk level
High
Yearly peak
9.9171
Peak month
July
Portland UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Portland in September?
In September, Portland's typical UV index is about 6.6664 — a high risk level. High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
Across the year, Portland sees the strongest UV in Summer, peaking around 9.9171 in July. Plan sun protection accordingly.
