Philadelphia UV index in December
Typical ultraviolet levels for Philadelphia during December, from the past year of data.
Low
Philadelphia
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
1.7
UV Index
December average
Low
Moderate
High
Very High
Extreme
December UV
1.682
Risk level
Low
Yearly peak
9.8446
Peak month
July
Philadelphia UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting Philadelphia in December?
In December, Philadelphia's typical UV index is about 1.682 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Philadelphia sees the strongest UV in Summer, peaking around 9.8446 in July. Plan sun protection accordingly.
