Average temperatures within Seattle throughout the duration of April is 8 with highs being 14 with lows of 5 celsius. We have put some more information here:

MonthDegrees Celsius
Temperature8
High Temperature14
Low Temperature5
Sunshine Per Day8

Seattle, Washington (USA) Weather in April FAQs

What is the temperate on average?

The weather is typically about 8 degrees during the month

How is the weather in summer vs. winter change?

The typical temperature variance is about 7 degrees celsius difference.

How much sunshine can I expect?

8 of sunshine per day

Click to see more Seattle Weather including Seattle, Washington (USA) March Weather and Seattle, Washington (USA) May Weather