San Jose UV index in December
Typical ultraviolet levels for San Jose during December, from the past year of data.
Low
San Jose
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
2.1
UV Index
December average UTC
Low
Moderate
High
Very High
Extreme
December UV
2.0536
Risk level
Low
Yearly peak
10.722
Peak month
July
San Jose UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting San Jose in December?
In December, San Jose's typical UV index is about 2.0536 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, San Jose sees the strongest UV in Summer, peaking around 10.722 in July. Plan sun protection accordingly.
