August weather forecast
Bellingham, WA

Scenic landscape of hills and the sea in this small town in Bellingham, Washington
Scenic landscape of hills and the sea in this small town in Bellingham, Washington

Weather in August

The last month of the summer, August, is also an agreeable month in Bellingham, Washington, with an average temperature fluctuating between 53.2°F (11.8°C) and 70.3°F (21.3°C).

Temperature

July and August, with an average high-temperature of 70.3°F (21.3°C), are the warmest months.

Humidity

The average relative humidity in August in Bellingham is 76%.

Rainfall

In Bellingham, during 7.1 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, in Bellingham, there are 158 rainfall days, and 18.7" (475mm) of precipitation is accumulated.

Snowfall

In Bellingham, snow does not fall in May through October.

Ocean temperature

With an average ocean temperature of 53.2°F (11.8°C), August is the month with the warmest seawater.
Note: Swimming in 53.2°F (11.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In August, the average length of the day in Bellingham is 14h and 17min.
On the first day of August in Bellingham, sunrise is at 5:44 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:54 pm PDT.

Sunshine

July and August, with an average of 10.5h of sunshine, are months with the most sunshine in Bellingham.

UV index

The average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in August transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Bellingham?

Warmest months are July and August, with an average high-temperature of 70.3°F (21.3°C).

What is the average humidity in August in Bellingham?

The average relative humidity in August is 76%.

How much does it rain in Bellingham in August?

In Bellingham, during August, the rain falls for 7.1 days and regularly aggregates up to 0.71" (18mm) of precipitation.

When it does not snow in Bellingham?

May through October are months without snowfall in Bellingham.

When is the ocean warmest in Bellingham?

August is the month with the warmest seawater in Bellingham, with an average ocean temperature of 53.2°F (11.8°C).

What is the water temperature in August in Bellingham?

In Bellingham, Washington, the average seawater temperature in August is 53.2°F (11.8°C). Swimming in 53.2°F (11.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Bellingham have in August?

The average day length in August in Bellingham, Washington, is 14h and 17min.

What time are sunrise and sunset in August in Bellingham?

On the first day of August in Bellingham, sunrise is at 5:44 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:54 pm PDT.

What are the months with the most sunshine in Bellingham?

The months with the most sunshine in Bellingham are July and August, with an average of 10.5h of sunshine.

How long on average sun shines in August in Bellingham?

In August, the average sunshine duration in Bellingham, Washington, is 10.5h.

What is the UV index intensity in August in Bellingham?

In Bellingham, Washington, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Bellingham, WA

Average temperature in August - Bellingham, WA
  • Average high temperature in August: 70.3°F

The warmest months (with the highest average high temperature) are July and August (70.3°F).
The month with the lowest average high temperature is December (41.9°F).

  • Average low temperature in August: 53.2°F

The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).

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Average pressure in August
Bellingham, WA

Average pressure in August - Bellingham, WA
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).

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Average wind speed in August
Bellingham, WA

Average wind speed in August - Bellingham, WA
  • Average wind speed in August: 3.7mph

The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in August
Bellingham, WA

Average humidity in August - Bellingham, WA
  • Average humidity in August: 76%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is July (74%).

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Average rainfall in August
Bellingham, WA

Average rainfall in August - Bellingham, WA
  • Average rainfall in August: 0.71"

The wettest month (with the highest rainfall) is November (2.64").
The driest month (with the least rainfall) is July (0.55").

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Average rainfall days in August
Bellingham, WA

Average rainfall days in August - Bellingham, WA
  • Average rainfall days in August: 7.1 days

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (7.1 days).

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Average snowfall in August
Bellingham, WA

Average snowfall in August - Bellingham, WA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Bellingham, WA

Average snowfall days in August - Bellingham, WA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in August
Bellingham, WA

Average sea temperature in August - Bellingham, WA
  • Average sea temperature in August: 53.2°F

The best month for swimming (with the highest average sea temperature) is August (53.2°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).

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Average daylight in August /
Average sunshine in August
Bellingham, WA

Average daylight in August / Average sunshine in August - Bellingham, WA
  • Average daylight in August: 14h and 17min

The month with the longest days is June (Average daylight: 16h and 5min).
The month with the shortest days is December (Average daylight: 8h and 21min).

  • Average sunshine in August: 10h and 30min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).

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Average sunshine days in August
Bellingham, WA

Average sunshine days in August - Bellingham, WA
  • Average sunshine days in August: 21.8 days

The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is April (10.8 days).

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Average UV index in August
Bellingham, WA

Average UV index in August - Bellingham, WA
  • Average UV index in August: 4

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

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Average cloud cover in August
Bellingham, WA

Average cloud cover in August - Bellingham, WA
  • Average cloud cover in August: 25

The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in August
Bellingham, WA

Average visibility in August - Bellingham, WA
  • Average visibility in August: 6mi

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).

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