Seattle UV index in August
Typical ultraviolet levels for Seattle during August, from the past year of data.
Very High
Seattle
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8.4
UV Index
August average
Low
Moderate
High
Very High
Extreme
August UV
8.4205
Risk level
Very High
Yearly peak
9.4524
Peak month
July
Seattle UV index — monthly trend
Average UV index by month over the past year, with August highlighted.
Visiting Seattle in August?
In August, Seattle's typical UV index is about 8.4205 — a very high risk level. Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
Across the year, Seattle sees the strongest UV in Summer, peaking around 9.4524 in July. Plan sun protection accordingly.
