Shoreline (WA) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Shoreline

Shoreline average temperature chart (Celsius) Shoreline average temperature chart (Fahrenheit)
Average monthly temperatures in Shoreline (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.3 9.6 11.3 13.8 17.3 20.3 22.7 22.9 20 15.2 10.3 7.5
°F 45.2 49.3 52.4 56.8 63.1 68.5 72.9 73.1 68 59.3 50.6 45.5

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Shoreline monthly rainfall chart (mm) Shoreline monthly rainfall chart (inches)
Average monthly rainfall in Shoreline (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 141 103 99 64 48 42 22 31 47 84 144 153
inches 5.6 4.1 3.9 2.5 1.9 1.7 0.9 1.2 1.9 3.3 5.7 6
Rainy days 18 16 16 14 11 9 5 6 9 13 18 19

Average annual rainfall in Shoreline: 903.633mm (355.8 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Shoreline

Shoreline average daily sunshine chart
Average daily sunshine Shoreline
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.5 4.1 5.8 7.1 8.6 9.4 10.8 9.8 7.7 5 2.8 2.1

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Shoreline average minimum / maximum temperatures (Celsius) Shoreline average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Shoreline (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2 2.9 3.5 5.2 7.9 10.7 12.4 12.7 10.8 7.5 4.6 2.4
Max °C 7.5 9.8 11.5 14 17.5 20.5 23 23.1 20.3 15.4 10.5 7.6
Min °F 35.5 37.1 38.3 41.4 46.2 51.3 54.3 54.9 51.4 45.4 40.2 36.3
Max °F 40.5 43.3 45.5 49.3 54.9 60.1 63.9 64.2 59.9 52.5 45.5 41

Sea temperature

The graph below shows the average sea temperature.

Shoreline average sea temperature chart (Celsius) Shoreline average sea temperature chart (Fahrenheit)
Average sea temperature around Shoreline in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.1 8 8.3 9.1 10.5 12 13.1 13.4 12.8 11.2 9.7 8.6
°F 46.5 46.4 47 48.4 50.9 53.6 55.5 56.2 55.1 52.1 49.5 47.5

Wind speed

The graph below shows the average wind speed.

Shoreline average winspeed by month (km/h) Shoreline average winspeed by month (mph)
Average wind speed in Shoreline (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 14 14 14 13 13 12 12 11 12 14 14
mph 9 9 9 9 8 8 8 7 7 7 9 9

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Shoreline relative humidity averages
Average relative humidity in Shoreline
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
81% 78% 75% 72% 70% 69% 68% 70% 75% 81% 82% 82%