Sea Temperature in Birch Bay in December

Complete information on the sea temperature range in the Salish Sea in Birch Bay in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Birch Bay. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Birch Bay in December

43°F

MINIMUN

46°F

AVERAGE

50°F

MAXIMUM

Historical Data of Water Temperature in December in Birch Bay

Water Temperature Chart for Salish Sea in Birch Bay in December

Sea Temperature Table in Birch Bay in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	48°C	48°C	46°C	48°C
Dec 2	48°C	48°C	46°C	48°C
Dec 3	48°C	48°C	46°C	48°C
Dec 4	48°C	48°C	46°C	48°C
Dec 5	46°C	48°C	46°C	47°C
Dec 6	46°C	48°C	46°C	47°C
Dec 7	46°C	48°C	46°C	47°C
Dec 8	46°C	46°C	48°C	47°C
Dec 9	48°C	46°C	48°C	47°C
Dec 10	48°C	48°C	46°C	48°C
Dec 11	46°C	48°C	46°C	47°C
Dec 12	48°C	48°C	46°C	47°C
Dec 13	48°C	48°C	46°C	47°C
Dec 14	48°C	48°C	46°C	47°C
Dec 15	48°C	48°C	46°C	48°C
Dec 16	48°C	48°C	46°C	47°C
Dec 17	48°C	48°C	46°C	47°C
Dec 18	48°C	48°C	46°C	47°C
Dec 19	48°C	46°C	46°C	47°C
Dec 20	46°C	46°C	46°C	46°C
Dec 21	46°C	46°C	45°C	46°C
Dec 22	46°C	48°C	45°C	46°C
Dec 23	48°C	48°C	45°C	47°C
Dec 24	48°C	48°C	45°C	47°C
Dec 25	48°C	48°C	45°C	47°C
Dec 26	48°C	48°C	45°C	47°C
Dec 27	48°C	48°C	45°C	47°C
Dec 28	48°C	46°C	46°C	47°C
Dec 29	48°C	46°C	46°C	47°C
Dec 30	48°C	48°C	46°C	47°C

Birch Bay Climate and Swimming Opportunities in December

37°F

Average Day Air Temperature

36°F

Average Night Air Temperature

8 in

Precipitation Amount per Month

17 days

Number of Rainy Days

8 hrs

Daylight
per Day

2 hrs

Sunshine
per Day

8 mph

Average Wind Speed

85%

Average
humidity

Birch Bay lies within the Washington in United States. The average daytime temperature in Birch Bay in December is 37°F (3°C), while the nighttime average is 35°F (2°C). There are typically 17 rainy days during the month, with a total precipitation of 7.7 inches (197 mm). The daylight duration in December in Birch Bay is 8 hours, with an average of 2 hours of sunshine per day. The average wind speed in December is 8 mph (13 km/h), and the humidity level is around 85%.

The water temperature in Birch Bay in December ranges from 45°F to 46°F (7°C to 8°C). At the beginning of the month, the average temperature is around 48°F (9°C), shifting to 48°F (9°C) by mid-December and reaching 46°F (8°C) in the last ten days. Overall, the average sea temperature in Birch Bay for December is 46°F (8°C). Very cold water with low air temperature creates extreme swimming conditions. Hypothermia can occur quickly, making it unsafe for most people.

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Birch Bay

What is the sea temperature in Birch Bay in December?

The water temperature in the Salish Sea in Birch Bay in December ranges from 45°F to 46°F (7°C to 8°C).

Is it possible to swim in the Salish Sea in Birch Bay in December?

The average sea temperature in Birch Bay in December is 46°F (8°C), and the air temperature is 37°F (3°C), so very cold water with low air temperature creates extreme swimming conditions. Hypothermia can occur quickly, making it unsafe for most people.