Rotterdam UV index in December
Typical ultraviolet levels for Rotterdam 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
Rotterdam UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting Rotterdam in December?
In December, Rotterdam's typical UV index is about 0.5469 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Rotterdam sees the strongest UV in Summer, peaking around 8.2557 in July. Plan sun protection accordingly.