Boston UV index in May
Typical ultraviolet levels for Boston during May, from the past year of data.
High
Boston
High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
6.8
UV Index
May average UTC
Low
Moderate
High
Very High
Extreme
May UV
6.7694
Risk level
High
Yearly peak
7.9149
Peak month
July
Boston UV index — monthly trend
Average UV index by month over the past year, with May highlighted.
Visiting Boston in May?
In May, Boston's typical UV index is about 6.7694 — a high risk level. High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
Across the year, Boston sees the strongest UV in Summer, peaking around 7.9149 in July. Plan sun protection accordingly.
