Portsmouth UV index in January
Typical ultraviolet levels for Portsmouth during January, from the past year of data.
Low
Portsmouth
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
0.5
UV Index
January average
Low
Moderate
High
Very High
Extreme
January UV
0.516
Risk level
Low
Yearly peak
7.7811
Peak month
July
Portsmouth UV index — monthly trend
Average UV index by month over the past year, with January highlighted.
Visiting Portsmouth in January?
In January, Portsmouth's typical UV index is about 0.516 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Portsmouth sees the strongest UV in Summer, peaking around 7.7811 in July. Plan sun protection accordingly.
