Average temperatures, rainfall and packing tips for Seattle, United States in April
April in Seattle is typically cool, with average daytime highs around 13°C and nights near 6°C. Temperature-wise it sits mid-range for Seattle (the 7th warmest month).
Expect some rain: around 42 mm falls in Seattle during April on average.
If your dates are flexible, the most comfortable months in Seattle are usually June, July, August and September.
← Seattle weather tomorrow (live)
In April, Seattle averages a daytime high of about 13°C and a night-time low of around 6°C, based on recent historical data.
Expect some rain: around 42 mm falls in Seattle during April on average.
April is a workable time to visit Seattle, with cool days - just pack accordingly. If your dates are flexible, the most comfortable months in Seattle are usually June, July, August and September.