Riverside UV index in December
Typical ultraviolet levels for Riverside during December, from the past year of data.
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
December average
Riverside UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting Riverside in December?
In December, Riverside's typical UV index is about 2.6315 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Riverside sees the strongest UV in Summer, peaking around 10.8975 in July. Plan sun protection accordingly.