Seattle UV index in April
Typical ultraviolet levels for Seattle during April, from the past year of data.
Moderate UV. Protect your skin during midday hours; wearing a hat and applying sunscreen is advisable.
April average
Seattle UV index — monthly trend
Average UV index by month over the past year, with April highlighted.
Visiting Seattle in April?
In April, Seattle's typical UV index is about 5.4692 — a moderate risk level. Moderate UV. Protect your skin during midday hours; wearing a hat and applying sunscreen is advisable.
Across the year, Seattle sees the strongest UV in Summer, peaking around 9.4524 in July. Plan sun protection accordingly.