Birch Bay (WA) monthly weather averages

Contents

Average daytime temperature

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

Birch Bay average temperature chart (Celsius) Birch Bay average temperature chart (Fahrenheit)
Average monthly temperatures in Birch Bay (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.9 8.5 10.5 13.2 16.4 19.3 21.3 21.4 18.8 14 9.2 6.3
°F 42.6 47.4 50.9 55.7 61.6 66.7 70.4 70.5 65.8 57.2 48.5 43.4

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.

Birch Bay monthly rainfall chart (mm) Birch Bay monthly rainfall chart (inches)
Average monthly rainfall in Birch Bay (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 125 98 81 64 52 43 32 37 52 92 135 139
inches 4.9 3.9 3.2 2.5 2 1.7 1.2 1.5 2 3.6 5.3 5.5
Rainy days 18 16 16 14 11 10 6 7 9 15 19 20

Average annual rainfall in Birch Bay: 873.967mm (344.1 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Birch Bay

Birch Bay average daily sunshine chart
Average daily sunshine Birch Bay
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.1 3.3 4.6 6.1 7.6 8.2 9.9 9.1 6.8 4.4 2.5 2.1

Day / night temperatures

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

Birch Bay average minimum / maximum temperatures (Celsius) Birch Bay average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Birch Bay (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 0.2 1.7 2.5 4.4 7 9.7 11 11.2 9 6 3.1 1
Max °C 6 8.7 10.7 13.4 16.7 19.5 21.6 21.7 19 14.2 9.3 6.5
Min °F 32.4 35.1 36.5 39.9 44.5 49.5 51.8 52.1 48.2 42.8 37.6 33.7
Max °F 37.6 41.4 43.9 48 53.2 58.3 61.3 61.5 57.2 50.2 43.2 38.7

Sea temperature

The graph below shows the average sea temperature.

Birch Bay average sea temperature chart (Celsius) Birch Bay average sea temperature chart (Fahrenheit)
Average sea temperature around Birch Bay in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.7 7.6 8.1 9.2 11 12.6 13.5 13.7 12.8 10.8 9.4 8.3
°F 45.9 45.7 46.6 48.6 51.8 54.6 56.4 56.6 55 51.5 48.8 46.9

Wind speed

The graph below shows the average wind speed.

Birch Bay average winspeed by month (km/h) Birch Bay average winspeed by month (mph)
Average wind speed in Birch Bay (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 15 14 13 12 12 12 12 11 12 15 16
mph 9 9 9 8 7 7 7 7 7 7 9 10

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.

Birch Bay relative humidity averages
Average relative humidity in Birch Bay
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
83% 81% 78% 74% 74% 73% 73% 75% 79% 84% 84% 84%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Birch Bay weather stats

Birch Bay weather statistics
Hottest month: August 21.4°C 70.5°F
Driest month: July 32mm 1.3ins
Sunniest month: August 9.1hrs
Coldest month: January 5.9°C 42.6°F
Wettest month: December 139mm 5.5ins
Warmest sea: August 13.7°C 56.7°F
Map showing location of Birch Bay (48.91789, -122.74462) Birch Bay map pin © Google

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