Portland UV index in December
Typical ultraviolet levels for Portland during December, from the past year of data.
Low
Portland
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
1.1
UV Index
December average UTC
Low
Moderate
High
Very High
Extreme
December UV
1.0939
Risk level
Low
Yearly peak
9.9171
Peak month
July
Portland UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting Portland in December?
In December, Portland's typical UV index is about 1.0939 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Portland sees the strongest UV in Summer, peaking around 9.9171 in July. Plan sun protection accordingly.
