Climate and monthly weather forecast
Birch Bay, WA

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Weather in January

January in Birch Bay, Washington, is a frosty winter month, with temperature in the range of an average high of 43.3°F (6.3°C) and an average low of 36.3°F (2.4°C). Birch Bay's January showcases an average high-temperature of a chilly 43.3°F (6.3°C), hardly distinct from December's 41.9°F (5.5°C). Weather in January »

Weather in February

The last month of the winter, February, is also a frosty month in Birch Bay, Washington, with temperature in the range of an average low of 35.8°F (2.1°C) and an average high of 44.1°F (6.7°C). Transitioning into February, Birch Bay records an average high-temperature of a still chilly 44.1°F (6.7°C), almost identical to January's 43.3°F (6.3°C). Weather in February »

Weather in March

March, the first month of the spring in Birch Bay, is also a frosty month, with an average temperature fluctuating between 38.8°F (3.8°C) and 48.4°F (9.1°C). Birch Bay's shift from February to March is accompanied by an average high-temperature of a still chilly 48.4°F (9.1°C), a slight deviation from 44.1°F (6.7°C). Weather in March »

Weather in April

April is a cool spring month in Birch Bay, Washington, with an average temperature fluctuating between 54.1°F (12.3°C) and 41.9°F (5.5°C). April signals a minor shift in the average high-temperature, moving from March's chilly 48.4°F (9.1°C) to a fresh 54.1°F (12.3°C). Weather in April »

Weather in May

May, the last month of the spring in Birch Bay, is a refreshing month, with temperature in the range of an average high of 61.7°F (16.5°C) and an average low of 46.6°F (8.1°C). May introduces a minor temperature shift, with average high-temperatures adjusting from April's cool 54.1°F (12.3°C) to an enjoyable 61.7°F (16.5°C). Weather in May »

Weather in June

The first month of the summer, June, is also an enjoyable month in Birch Bay, Washington, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 50.2°F (10.1°C). Transitioning from May to June, Birch Bay observes an average high-temperature of a still refreshing 64.9°F (18.3°C), differing subtly from the previous month. Weather in June »

Weather in July

July is an agreeable summer month in Birch Bay, Washington, with an average temperature ranging between max 69.8°F (21°C) and min 53.4°F (11.9°C). The shift from June to July is characterized by an average high-temperature of a pleasant 69.8°F (21°C), not significantly different from the 64.9°F (18.3°C) of June. Weather in July »

Weather in August

August, the last month of the summer in Birch Bay, is also an agreeable month, with temperature in the range of an average low of 54.9°F (12.7°C) and an average high of 70°F (21.1°C). August, with an average high of 70°F (21.1°C) and a low of 54.9°F (12.7°C), signifies the warmest month of the year. Weather in August »

Weather in September

September, the first month of the autumn in Birch Bay, is still a comfortable month, with an average temperature fluctuating between 52°F (11.1°C) and 64.8°F (18.2°C). The onset of September notes an average high-temperature of an enjoyable 64.8°F (18.2°C), subtly shifted from August's 70°F (21.1°C). Weather in September »

Weather in October

October, the same as September, in Birch Bay, Washington, is another mild autumn month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 55.9°F (13.3°C). With the onset of October, Birch Bay's climate undergoes a slight change as the average high-temperature moves from a refreshing 64.8°F (18.2°C) in September to a mild 55.9°F (13.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Birch Bay, is another chilly month, with an average temperature varying between 41°F (5°C) and 47.7°F (8.7°C). November signifies a gentle decline in Birch Bay's average high-temperature, easing from a mild 55.9°F (13.3°C) in October to a frosty 47.7°F (8.7°C). Weather in November »

Weather in December

December, the first month of the winter in Birch Bay, is also an icy month, with an average temperature ranging between max 41.9°F (5.5°C) and min 36°F (2.2°C). The month of December, characterized by an average high of 41.9°F (5.5°C) and a low of 36°F (2.2°C), is recognized as the coldest. Weather in December »
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the most humid months?

The months with the highest humidity are January and November, with an average relative humidity of 83%.

How much does it rain in Birch Bay?

In Birch Bay, during the entire year, the rain falls for 176.1 days and collects up to 43.78" (1112mm) of precipitation.

When does it snow?

Months with snowfall are January through April, November and December.

How many days does it snow?

In Birch Bay, during the entire year, snow falls for 10.5 days and aggregates up to 6.77" (172mm) of snow.

What are the months with the least sunshine?

The months with the least sunshine are January and December, with an average of 3.9h of sunshine.

What are the months with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

When does it snow the most?

The month with the most snowfall is February, when snow falls for 3.7 days and typically aggregates up to 2.05" (52mm) of snow.

What month is the ocean coldest?

The month with the coldest seawater is February, with an average ocean temperature of 44.4°F (6.9°C).

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow?

In Birch Bay, snow does not fall in May through October.

When are the longest days?

With an average of 16h and 6min of daylight, June has the longest days of the year.

When is the highest UV index?

The months with the highest UV index in Birch Bay are June and July, with an average maximum UV index of 5.

What is the least humid month?

With an average relative humidity of 74%, July is the least humid month.

What is the driest month?

July is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.67" (17mm) of precipitation.

What are the months with the most sunshine?

July and August, with an average of 10.4h of sunshine, are months with the most sunshine.

What month is the hottest?

August, with its average high-temperature of 70°F (21.1°C) and an average low-temperature of 54.9°F (12.7°C), holds the record as the warmest month.

When is the ocean warmest?

The month with the warmest seawater is August, with an average ocean temperature of 52.7°F (11.5°C).

What is the rainiest month?

November is the month with the most rainfall. Rain falls for 19.7 days and accumulates 7.13" (181mm) of precipitation.

What part of the year is the coldest?

December, recording an average high temperature of 41.9°F (5.5°C) and a low temperature of 36°F (2.2°C), is Birch Bay's coldest month.

What is the month with the shortest days in Birch Bay?

The month with the shortest days is December, with an average of 8h and 18min of daylight.

Average temperature
Birch Bay, WA

Average temperature - Birch Bay, WA

The warmest month (with the highest average high temperature) is August (70°F).
The month with the lowest average high temperature is December (41.9°F).

The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is February (35.8°F).

Average pressure
Birch Bay, WA

Average pressure - Birch Bay, WA

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).

Average wind speed
Birch Bay, WA

Average wind speed - Birch Bay, WA

The windiest months (with the highest average wind speed) are November and December (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity
Birch Bay, WA

Average humidity - Birch Bay, WA

The months with the highest relative humidity are January and November (83%).
The month with the lowest relative humidity is July (74%).

Average rainfall
Birch Bay, WA

Average rainfall - Birch Bay, WA

The wettest month (with the highest rainfall) is November (7.13").
The driest month (with the least rainfall) is July (0.67").

Average rainfall days
Birch Bay, WA

Average rainfall days - Birch Bay, WA

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).

Average snowfall
Birch Bay, WA

Average snowfall - Birch Bay, WA

The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Birch Bay, WA

Average snowfall days - Birch Bay, WA

The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature
Birch Bay, WA

Average sea temperature - Birch Bay, WA

The best months for swimming (with the highest average sea temperature) are August and September (52.6°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).

Average daylight / Average sunshine
Birch Bay, WA

Average daylight / Average sunshine - Birch Bay, WA

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).

Average sunshine days
Birch Bay, WA

Average sunshine days - Birch Bay, WA

The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is November (8.8 days).

Average UV index
Birch Bay, WA

Average UV index - Birch Bay, WA

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Birch Bay, WA

Average visibility - Birch Bay, WA

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Birch Bay, Washington, USA

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