Shoreline (WA) Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from comfortable to chilly in Shoreline. Average daytime temperatures reach a comfortable 24°C (75°F) in August. In December, the coolest month of the year, temperatures drop to a chilly 7°C (45°F).

At night, temperatures range from around 13°C (55°F) in August to 2°C (36°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

Shoreline has a relatively rain/snowy climate with high precipitation levels, averaging 1006 mm (40 in) of rain/snowfall annually. Shoreline can be quite wet during November, receiving approximately 164 mm (6.5 in) of precipitation over 21 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 18 mm (0.7 in) of precipitation spread across 6 rainy days. For more details, please visit our Shoreline Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Shoreline can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Shoreline.

The city experiences its highest humidity in December, reaching 80%. In July, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year