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Seattle Weather in August, USA

Seattle Averages August

SEATTLE AVERAGES FOR AUGUST

  • What is Average Temperature?
    The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

    Temperature

    18°C
    64°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    High Temperature

    23°C
    73°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    Low Temperature

    13°C
    55°F
  • What is Average Sea Temperature?
    Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface

    Sea Temperature

    14°C
    57°F
  • What are Average Daily Sunshine Hours?
    Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

    Sunshine Hours

    9 hours
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall Days

    6 days
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall

    34 mm

Slide and Tap Other Months

Seattle Daily Averages August

August 2024 Daily Averages

Sun
Mon
Tue
Wed
Thu
1 Avg 19º 66º
Fri
2 Avg 19º 66º
Sat
3 Avg 19º 66º
4 Avg 20º 68º
5 Avg 20º 68º
6 Avg 20º 68º
7 Avg 19º 66º
8 Avg 20º 68º
9 Avg 20º 68º
10 Avg 19º 66º
11 Avg 19º 66º
12 Avg 20º 68º
13 Avg 20º 68º
14 Avg 21º 70º
15 Avg 21º 70º
16 Avg 21º 70º
17 Avg 21º 70º
18 Avg 20º 68º
19 Avg 20º 68º
20 Avg 20º 68º
21 Avg 19º 66º
22 Avg 18º 64º
23 Avg 19º 66º
24 Avg 19º 66º
25 Avg 20º 68º
26 Avg 20º 68º
27 Avg 20º 68º
28 Avg 20º 68º
29 Avg 18º 64º
30 Avg 18º 64º
31 Avg 18º 64º
Forecast
Avg Historical Daily Average

August Weather Averages

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August is one of the last months of the beautiul summer weather in Seattle, so enjoy it whilst you can if you are in the city during this month.

Expect more hot, dry and sunny days with very little expectation of rain in August.

The average daily temperature expected in Seattle in this month is 23°C (73°F), dropping to an average temperature of 13°C (55°F).

Seattle sees up to 9 hours of sunshine per day throughout the month.

The average expectation for rain fall for this month is 34 mm over 6 days.

Seattle in this month expects an average of 0 days of snow or foggy weather.

The average temperature of the sea during this month is 14°C (57°F).

While the weather remains lovely, August may be one of your last chances of the year to take advantage of one of Seattle's beaches and soak up the last of the summer's sun.

Also, the hot, dry days make exploring Seattle's historic attractions a much more enjoyable experience than it might be in the wetter weather of the winter. Why not explore the city on foot and see the many things it has to offer.

The views from the Space Needle should also be spectacular at this time of year, with clear skies and plenty of sunshine to light up the city and give you excellent visibility.

Cinema Under the Stars continues into this month, with dusk screenings of films in the open air every Friday evening in the city.

Pot pride is celebrated in Seattle in August, with Seattle Hempfest.  It is the world's largest rally for marijuana reform, with hundreds of thousands of people visiting the city each year for it.