Boston UV index in December
Typical ultraviolet levels for Boston during December, from the past year of data.
Low
Boston
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
1.1
UV Index
December average
Low
Moderate
High
Very High
Extreme
December UV
1.1454
Risk level
Low
Yearly peak
7.9149
Peak month
July
Boston UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting Boston in December?
In December, Boston's typical UV index is about 1.1454 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Boston sees the strongest UV in Summer, peaking around 7.9149 in July. Plan sun protection accordingly.
