Seattle UV index in May
Typical ultraviolet levels for Seattle during May, from the past year of data.
High
Seattle
High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
7.8
UV Index
May average
Low
Moderate
High
Very High
Extreme
May UV
7.7601
Risk level
High
Yearly peak
9.4524
Peak month
July
Seattle UV index — monthly trend
Average UV index by month over the past year, with May highlighted.
Visiting Seattle in May?
In May, Seattle's typical UV index is about 7.7601 — a high risk level. High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
Across the year, Seattle sees the strongest UV in Summer, peaking around 9.4524 in July. Plan sun protection accordingly.
