Climate and monthly weather forecast
Birch Bay, WA

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Weather in January

January in Birch Bay, Washington, is a chilly winter month, with an average temperature varying between 36.3°F (2.4°C) and 43.3°F (6.3°C). Birch Bay records an average high-temperature of a chilly 43.3°F (6.3°C) in January, maintaining a close correlation with December's 41.9°F (5.5°C). Weather in January »

Weather in February

The last month of the winter, February, is another chilly month in Birch Bay, Washington, with an average temperature ranging between min 35.8°F (2.1°C) and max 44.1°F (6.7°C). Birch Bay, Washington, records an average high-temperature of a still chilly 44.1°F (6.7°C) as February arrives, nearly mirroring the previous month's climate. Weather in February »

Weather in March

March, the first month of the spring in Birch Bay, is still a chilly month, with an average temperature ranging between min 38.8°F (3.8°C) and max 48.4°F (9.1°C). March's average high-temperature is a still frosty 48.4°F (9.1°C), maintaining a close comparison with February's 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 varying between 41.9°F (5.5°C) and 54.1°F (12.3°C). The commencement of April sees a minor shift in the average high-temperature, moving from a frosty 48.4°F (9.1°C) in March to a cool 54.1°F (12.3°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Birch Bay, Washington, with an average temperature fluctuating between 46.6°F (8.1°C) and 61.7°F (16.5°C). The transition from April to May brings a subtle temperature rise, with average high-temperatures increasing from a cool 54.1°F (12.3°C) to a refreshing 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 low of 50.2°F (10.1°C) and an average high of 64.9°F (18.3°C). The advent of June presents an average high-temperature of a still refreshing 64.9°F (18.3°C), maintaining a close correlation with the preceding 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 transition into July shows a subtle variation to a pleasant 69.8°F (21°C) from June's 64.9°F (18.3°C) in the average high-temperature. Weather in July »

Weather in August

The last month of the summer, August, is also an agreeable month in Birch Bay, Washington, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 54.9°F (12.7°C). In Birch Bay, Washington, temperatures reach their average annual highs in August, measuring 70°F (21.1°C) and a minimum average of 54.9°F (12.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a refreshing month in Birch Bay, Washington, with an average temperature fluctuating between 52°F (11.1°C) and 64.8°F (18.2°C). Birch Bay records an average high-temperature of an enjoyable 64.8°F (18.2°C) in September, closely mirroring the climate of the previous month. Weather in September »

Weather in October

October, like September, is a moderate autumn month in Birch Bay, Washington, with an average temperature varying between 46°F (7.8°C) and 55.9°F (13.3°C). October signals a slight drop in average high-temperature, sliding from September's enjoyable 64.8°F (18.2°C) 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 fluctuating between 47.7°F (8.7°C) and 41°F (5°C). The move into November indicates a slight reduction in the average high-temperature, down from October's moderate 55.9°F (13.3°C) 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 still a cold month, with temperature in the range of an average high of 41.9°F (5.5°C) and an average low of 36°F (2.2°C). December, on average, is the coldest month, registering a high temperature of 41.9°F (5.5°C) and a low of 36°F (2.2°C). Weather in December »
Updated: Feb 14, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the most humid month in Birch Bay?

January and November, with an average relative humidity of 83%, are most humid months in Birch Bay.

How many days 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 in Birch Bay?

January through April, November and December are months with snowfall in Birch Bay, Washington.

How much does it snow in Birch Bay?

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

What is the month with the least sunshine in Birch Bay?

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

When is the lowest UV index in Birch Bay?

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

When does it snow the most in Birch Bay?

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 is the month with the coldest ocean in Birch Bay?

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

When is Daylight Saving Time (DST) in Birch Bay?

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?

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

When are the longest days in Birch Bay?

June has the longest days of the year in Birch Bay, Washington, with an average of 16h and 6min of daylight.

What is the month with the highest UV index in Birch Bay?

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

What is the least humid month in Birch Bay?

July is the least humid month in Birch Bay, Washington, with an average relative humidity of 74%.

What is the driest month in Birch Bay?

The month with the least rainfall is July, when the rain falls for 7.3 days and typically collects 0.67" (17mm) of precipitation.

What are the months with the most sunshine in Birch Bay?

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

What is the hottest time of year in Birch Bay?

Birch Bay witnesses the warmest weather in August, with temperatures averaging a high of 70°F (21.1°C) and a low of 54.9°F (12.7°C).

What is the month with the warmest ocean in Birch Bay?

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

What is the rainiest month in Birch Bay?

The month with the most rainfall is November, when the rain falls for 19.7 days and typically aggregates up to 7.13" (181mm) of precipitation.

What are the coldest months in Birch Bay?

December, with average temperatures reaching a high of 41.9°F (5.5°C) and a low of 36°F (2.2°C), is the coldest month in Birch Bay.

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

December has the shortest days of the year in Birch Bay, Washington, 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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