August weather forecast
Vancouver, WA

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The intricate design of the road acting as a bridge over a calm, blue river in Vancouver, Washington
The intricate design of the road acting as a bridge over a calm, blue river in Vancouver, Washington

Weather in August

August weather in Vancouver, Washington sees a continuation of the warm temperatures from July but with a more marked decrease in humidity. Residents looking forward to the coolness of fall have to wait a bit longer as the days remain sun-kissed and pleasant. It is a time of outdoor parties, comfortable late-night strolls, and breathtaking sunsets by the city's stunning waterfront. However, with an average high temperature peaking at 80.6°F and high UV index of 5, residents should remain cautious about extended sun exposure.

Temperature

Vancouver reaches its highest average temperatures in August, measuring 80.6°F at the peak and 54°F at the lowest.

Heat index

The heat index value for August is calculated to be 82.4°F. Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

The least humid month is August, with an average relative humidity of 65%.

Rainfall

In Vancouver, Washington, during August, the rain falls for 4.9 days and regularly aggregates up to 0.39" of precipitation. Throughout the year, there are 177.1 rainfall days, and 34.29" of precipitation is accumulated.

Snowfall

In Vancouver, snow does not fall in April through October.

Daylight

In Vancouver, the average length of the day in August is 14h and 4min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:39 pm. On the last day of August, in Vancouver, Washington, sunrise is at 6:30 am and sunset at 7:51 pm PDT.

Sunshine

August has the most sunshine of the year, with an average of 11h of sunshine.

UV index

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 5 in August translates into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What month is the hottest in Vancouver?

Vancouver's temperatures tend to reach their peak averages in August, with a high of 80.6°F and a low of 54°F.

What is the usual temperature for Vancouver in August?

The high-temperature, in August, in Vancouver, records 80.6°F, while the low-temperature is 54°F. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 82.4°F.

What is the least humid month in Vancouver?

With an average relative humidity of 65%, August is the least humid month.

What is the average humidity in August in Vancouver?

In August, the average relative humidity is 65%.

How many days does it rain in August in Vancouver?

In August, in Vancouver, the rain falls for 4.9 days. Throughout August, 0.39" of precipitation is accumulated.

When it does not snow in Vancouver?

In Vancouver, Washington, snow does not fall in April through October.

What is the average length of the day in August in Vancouver?

In August, the average day length is 14h and 4min.

When is the sunrise / sunset in August in Vancouver?

In August, on the first day of the month, sunrise is at 5:54 am and sunset at 8:39 pm. On the last day of the month, in Vancouver, Washington, sunrise is at 6:30 am and sunset at 7:51 pm PDT.

What month has the most sunshine in Vancouver?

The month with the most sunshine in Vancouver, Washington, is August, with an average of 11h of sunshine.

How many hours of sunshine does Vancouver have in August?

In Vancouver, Washington, the average sunshine duration in August is 11h.

What is the UV index reading in August in Vancouver?

In August, the average daily maximum UV index in Vancouver is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Vancouver, WA

Average temperature in August - Vancouver, WA
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in August: 54°F

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34°F).

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Average pressure in August
Vancouver, WA

Average pressure in August - Vancouver, WA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in August
Vancouver, WA

Average wind speed in August - Vancouver, WA
  • Average wind speed in August: 3.8mph

The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

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Average humidity in August
Vancouver, WA

Average humidity in August - Vancouver, WA
  • Average humidity in August: 65%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in August
Vancouver, WA

Average rainfall in August - Vancouver, WA
  • Average rainfall in August: 0.39"

The wettest month (with the highest rainfall) is December (5.08").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days in August
Vancouver, WA

Average rainfall days in August - Vancouver, WA
  • Average rainfall days in August: 4.9 days

The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.9 days).

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Average snowfall in August
Vancouver, WA

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

The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Vancouver, WA

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

The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Vancouver, WA
  • Average daylight in August: 14h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in August: 11h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and February (Average sunshine: 4h and 6min).

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Average sunshine days in August
Vancouver, WA

Average sunshine days in August - Vancouver, WA
  • Average sunshine days in August: 23.8 days

The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (7.9 days).

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Average UV index in August
Vancouver, WA

Average UV index in August - Vancouver, WA
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
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
Vancouver, WA

Average cloud cover in August - Vancouver, WA
  • Average cloud cover in August: 23

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in August
Vancouver, WA

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

The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).

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Vancouver, Washington, USA

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