Cool
Average highs are around 14°C, so pack for cooler days.
April verdict
Poor for holiday weather
Average highs are around 14°C, so pack for cooler days. Sunshine averages 6.7h per day, enough for a balanced month. Rainfall averages 66mm, which is relatively low for holiday planning.

Monthly averages
Temp
14°C
Rain
66mm
Sun
6.7h
Sea
9°C
Weather score
29
Poor
Cool
Average highs are around 14°C, so pack for cooler days.
Drier
Rainfall averages 66mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.7h per day, enough for a balanced month.
Cool sea
Sea temperatures average 9°C, so the water can feel cool.
Map
Compare Seattle, Washington, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
April14°C average high
April is close to Seattle's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
April66mm average rain
April sits near Seattle's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
April6.7 hours average sun
April sits close to Seattle's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
April9°C average sea
April is below Seattle's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJune to September
Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.
April29 weather score
April scores below Seattle's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.