Washington UV index in December
Typical ultraviolet levels for Washington during December, from the past year of data.
Low
Washington
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
1.9
UV Index
December average
Low
Moderate
High
Very High
Extreme
December UV
1.8884
Risk level
Low
Yearly peak
10.4328
Peak month
July
Washington UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting Washington in December?
In December, Washington's typical UV index is about 1.8884 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Washington sees the strongest UV in Summer, peaking around 10.4328 in July. Plan sun protection accordingly.
